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___________________Joseph P Walton, PhD____________________ CURRICULUM VITAE
Joseph P. Walton, Ph.D.

Personal information
Address:
Department of Communication Sciences and Disorders University of South Florida PCD 1007 Tampa, FL 33647 Phone (813) 974-6473 E-mail [email protected] Birth place
Education
1976 B.A. (Hearing Science)

Employment
9/84 to 8/90
Assistant Professor, Dept. of Surgery, Division of Otolaryngology, University of Rochester Adjunct Assistant Professor, Center for Brain Research, University of Rochester Adjunct Associate Professor, Dept. of Communication Disorders, University of Buffalo Associate Professor, Dept. of Neurobiology and Anatomy, University of Rochester Associate Professor, Dept. of Otolaryngology, University of Rochester Professor, Dept. of Communication Sciences and Disorders and School of Aging Studies, University of South Florida
Certification and Licensure
New York State Audiology License, 1984 - 2010
Certificate of Clinical Competency of Audiology American Speech, Language and

Hospital Appointments

1984 - 2010
Clinical Audiologist Strong Memorial Hospital, Rochester, NY
Mentorship

Adithya Chandreqowda PhD Student Lab Rotation
___________________Joseph P Walton, PhD____________________ Harold Lesser, MD/PhD Dissertation Committee COURSES TAUGHT AND OTHER TEACHING ACTIVITES
Fundamentals of Hearing (University of Florida)
Auditory Evoked Potentials (University of Florida)
Research Methods in Digital Sound Processing (University of Florida)
Audition (Lecturer, University of Rochester)
Auditory Brainstem Responses in Neurological Disease, Neurology Department – Grand
Molecular Biology of Congenital Hearing Loss, Rochester School for the Deaf Neuroscience Undergraduate Independent Study (University of Rochester) Neuroscience Graduate Independent Study (University of Rochester) Undergraduate Clinical Supervision: University of Florida Speech-Language-Hearing Graduate Clinical Supervision: University of Rochester, Audiology Department, Strong Memorial Hospital, University oi Rochester Pediatric and Adult Applications of Auditory Evoked Responses (Otolaryngology Resident Training, University of Rochester) Multiple In-services, Department of Audiology (University of Rochester) Developed Graduate Course “Hearing and Balance: Structure, Function and Disease” (University of Rochester School of Medicine)
Intellectual Property –United States
Walton, J.P., Miller, K., Taylor, J., Fuller, L. & Frisina, R.D. “Aid to Hearing Speech in a
Noisy Environment”, Patent# : 5,285,502 (February 1994)
___________________Joseph P Walton, PhD____________________
Miller, K., Fuller, L., Taylor, J., Frisina, R.D. & Walton, J. P. “Hearing Aid with a Pre-
Adjusted Frequency Response”. Patent# : 8,302,638 (September 1994)
Miller, K., Fuller, L., Taylor, J., Frisina, R.D. & Walton, J. P. “Hearing Aid with a
Permanently-Adjusted Frequency Response”, Patent# : 5,406,633 (April 1995)
Intellectual Property – International
Walton, J. P., Miller, K., Taylor, J., Fuller, L. & Frisina, R.D. “Aid to Hearing Speech in
Noisy Environment”, Serial# : PCT/US 93908361.4 (1996)
Awards
Fellow
American Academy of Audiology, 1992-1997. American Federation of Research Grant Recipient; Mentor (K. Barsz) American Federation of Aging Research Grant Recipient (P. Allen) Research Presentation in 1993 Otolaryngology Research Forum Second Place Award Research Presentation in 1994 Otolaryngology Research Forum
Professional Associations
Sigma Xi, The Scientific Research Society Association for Research in Otolaryngology Founding Member International Center for Hearing and Speech National Technical Institute for the Deaf
Research Funding
Current

NIH-National Institute on Aging :
"The Aging Auditory System: Presbycusis and Its Neural Bases"
ID#: P01 AG0952-06
P.I.: D. Robert Frisina, Ph.D.
Neurophysiology Project 3, Director: Joseph P. Walton, Ph.D.
Animal Behavior Project 2, Director: Joseph P. Walton, Ph.D.
Animal Core B, Director: Joseph P. Walton, Ph.D.
Effort: 40%
Total Costs: $4,800,000
Inclusive Dates: 9-16-10 to 07-31-15
PENDING

NIH/NIDCD R01
“Development and Aging of the Cochlear Stria Vascularis”
Effort: 20%
$250,000 / year Direct Costs
Role: Co-I
NIH/NIA R01: “NIH Toolbox for Assessment Neurological and Behavioral Function:
Auditory Subdomain”
___________________Joseph P Walton, PhD____________________ Effort: 33%
Role: Co-I
235,000/year Direct Costs
Inclusive Dates: 1-31-11 to 6-31-11

Completed
NIH/NICHD R01: “Integrated Multidisciplinary Approach for Analyzing Diffuse
Myelinization Disorders”
Effort: 23%
Role: Co-I
325,000 / year Direct Costs
Inclusive Dates: 01-01-10 to 10-08-10
NIH-National Institute on Aging :
"The Aging Auditory System: Presbycusis and Its Neural Bases"
ID#: P01 AG0952-06
P.I.: D. Robert Frisina, Ph.D., RICHS Director
Neurophysiology Project Director: Joseph P. Walton, Ph.D.
Effort: 68%
Total Costs: $5,500,000
Inclusive Dates: 5-1-98 to 4-30-03
Schmitt Grant: “Photic sensitivity in old mice: a study of changing visual function,
retinal degeneration, and protein expression ”
Co-Principle Investigator: Joseph P. Walton, Ph.D.
Total Costs: $10,000
Inclusive Dates: 4-1-04 to 3-31-05
Schmitt Grant: “Age changes in K+ Channel Gene Expression and Hearing”
Co-Principle Investigator: Joseph P. Walton, Ph.D.
Total Costs: $20,000
Inclusive Dates: 8-1-00 to 7-31-04
NIH-National Institute on Aging :
"The Aging Auditory System: Presbycusis and Its Neural Bases"
ID#: P01 AG0952-06
P.I.: D. Robert Frisina, Ph.D., RICHS Director
Neurophysiology Project Director: Joseph P. Walton, Ph.D.
Effort: 68%
Total Costs: $4,200,000
Inclusive Dates: 5-1-92 to 3-31-98
NIH-NIDCD: "Neural Encoding of Dynamic Features of Complex Sounds"
ID#: R29 NS24745-02
P.I.: Robert D. Frisina, Ph.D.
Co-I.: Joseph P. Walton, Ph.D.
Effort: 20%
Total Costs: $525,000
Inclusive Dates: 7-1-88 to 6-30-94
Deafness Research Foundation: “Neural correlates of temporal processing deficits in
progressive sensorineural hearing loss”
___________________Joseph P Walton, PhD____________________ P.I.: Joseph P. Walton, Ph.D. Total Costs: $25,000 National Institute on Aging: "Neuropsychology of Music in Aging and Alzheimer's Dementia" P.I.: Kenneth P. Swartz, Ph.D. Co-I.: Joseph P. Walton, Ph.D. Effort: 10% Direct Costs: $350,000 Inclusive Dates: 3-1-90 to 2-28-92 NIH-NIDCD: "Neural Basis of Music Cognition" P.I.: Edwin C. Hantz, Ph.D. Co-I.: Joseph P. Walton, Ph.D. Effort: 10% Direct Costs: $370,426 Inclusive Dates: 4-1-90 to 3-31-92 Peer Reviewed Publications

Margolis, R., Frisina, R., Walton, J. (in press) AMTAS® - Automated Method for Testing Auditory Sensitivity: III. Air Conduction Audiograms in Children and Adults. Internat. J. Audiology. Polesskaya , O, Cunningham , L.L., Francis, S.P., Luebke, A.E., Zhu, X., Collins, D., Vasilyeva , O., Sahler, J., Desmet, E., Gelbard, H.A., Maggirwar, S.B., Walton, J.P.
Frisina, R.D., Dewhurst, S. (submitted) Mixed lineage kinase 3 ablation does not
protect from ototoxicity induced by acoustic trauma or aminoglycoside exposure.
Hearing Research.
Walton J. P. 2010. Timing is Everything: Temporal Processing Deficits in the Aged Auditory
Vasilyeva, O., Luebke, A., Walton, J. (in preparation) Central auditory temporal processing
deficits in an animal model of congenital sensorineural hearing loss. Hearing Res. Walton J. P., Barsz, K. B., and Wilson, W. W. (in preparation) Auditory midbrain neurons
specialized for extracting silent intervals in background noise. Nature Neurosci. Allen, P.D., Barsz, K., Ison, J. R., Walton. J. P. (in preparation) Age-related decline in
behavioral and neural correlates of spatial release from masking in a mouse model of presbycusis. Neurobiology of Aging. Vasilyeva, O., Zhu, X., Walton, J.P. and Frisina, RF. 2009 Interactions of hearing loss and
Diabetes Mellitus in the CBA/CaJ mouse model of presbycusis. Hearing Res. 249:44-53. Leong, U., Barsz, K., Allen, P.D. and Walton, J.P. 2009. Neural correlates of age-related
declines in frequency selectivity in the auditory midbrain. (DOIin press) Neurobiology of Aging. Walton, J., Wilson, W., Barsz. (2008) Sensorineural hearing loss and neural correlates of
temporal acuity in the inferior colliculus of the C57Bl/6 mouse. J. Assoc. Res. Otolaryngology. 9: 12-22. Allen, P.D., Schmuck N., Ison, J.R., Walton, J.P (2008) Kv1.1 potassium ion channels do not
appear to play a critical role in temporal processing as assessed by gap detection measures. Hearing Res. 246: 52-58. Jones, L., Prins, J., Park, S., Walton, J.P., Luebke, A. and Lurie, D. Lead exposure during
development results in increased neurofilament phosphorylation, neuritic beading, and ___________________Joseph P Walton, PhD____________________ temporal processing deficits within the murine auditory brainstem. J. Comp. Neurol. 506: 1003-1017, 2007. Barsz, K., Wilson, W., and Walton, J. P. Reorganization of receptive field maps following
hearing loss in inferior colliculus neurons. Neurosci. 147: 532-545, 2007. Frisina, R.D., and Walton, J.P. Age-related structural and functional changes in the cochlear
nucleus. Hearing Res. 217: 216-233, 2006. Simon, H., Frisina, R.D. and Walton, J.P. Age and stimulus rise time alter response latency of
mouse inferior colliculus neurons. J. Acoustical Soc. Am. 116(1): 469-77, 2004. Allen, P.D., Burkard, R.F., Ison, J.R. and Walton, J.P. Impaired gap encoding in aged mouse
inferior colliculus at moderate but not high stimulus levels. Hearing Res. 186: 17-29, 2004. Ison, JR., Castro J., Allen, PD., Virag, T and Walton, JP. The relative detectability for mice of
gaps having different ramp durations at their onset and offset boundaries. J. Acoustical Soc. Am. 112(2): 740-7, 2002. Walton, J.P., Simon, H. and Frisina, R.D. Age-related alterations in the neural coding of
envelop periodicities. J. Neurophysiol. 88: 565–578 2002. Barsz, K., Ison, J., Snell, K. B., and Walton, J. P., Behavioral and neural measures of auditory
temporal acuity in aging humans and mice. Neurobiol. Aging, 23: 565-578, 2002. Wilson, W.W. and Walton, J. P., Background noise improves gap detection in tonically
inhibited inferior colliculus neurons. J. Neurophysiol. 87: 240-249, 2002. Barsz, K., Wilson, W.W. and Walton, J.P. Background noise differentially effects temporal
coding by tonic units in the mouse inferior colliculus. Hearing Res. 150: 149-160, 2000. Walton, J.P., Orlando, M.S. and Burkard, R. Auditory brainstem response forward-masking
recovery functions in older humans with normal hearing. Hearing Res. 127: 86-94, 1999. Frisina, R.D., Walton, J.P., Lynch-Armour, M. and Byrd, J.D. Inputs to a physiologically-
characterized region of the inferior colliculus of the young adult CBA mouse. Hearing Res.115, 61-81, 1998. Barsz, K., Benson, P.K and Walton, J.P. Gap encoding by inferior collicular neurons is altered
by minimal changes in signal envelope. Hearing Res. 115, 13-26, 1998. Walton, J.P., Frisina, R.D, and O'Neill, W.E. Age-related alteration in processing of temporal
sound features in the auditory midbrain of the CBA mouse. J. Neurosci.18, 2764-2776, 1998. Ison, J.R., Payman, G., Palmer, M.J. and Walton, J.P. Nimodipine at a dose that slows ABR
latencies does not protect the ear against noise. Hearing Res. 106, 179-183, 1997. Walton, J.P., Frisina, R.D, Ison, J.R. and O'Neill, W.E. Neural correlates of behavioral gap
detection in the inferior colliculus of the young CBA mouse. J. Comp. Physiol. 181, 161-176, 1997. Frisina, R.D., Karcich, K.J., Tracy, T., Sullivan, D.M., Walton, J.P. and Colombo, J.C.
Preservation of amplitude modulation coding in the presence of background noise by chinchilla auditory nerve fibers. J. Acoustical Soc. Am. 99, 475-490, 1996. Kazee, A.M., Han, L., Spongr, V.P., Walton, J.P., Salvi, R.J. and Flood, D.G. Synaptic loss in
the central nucleus of the inferior colliculus correlates with sensorineural hearing loss in the C57BL/6 mouse model of presbycusis. Hearing Res. 89, 109-120, 1996. Frisina, R.D., Zettel, M., Walton, J.P. and Kelly, P.J. Distribution of calbindin D28k
immunoreactivity in the cochlear nucleus of the young chinchilla. Hearing Research 85, 53-68, (1995). Walton, J.P., Frisina, R.D. and Meierhans. L.R. Sensorineural hearing loss effects recovery
from short term adaptation in the C57BL/6 and CBA models of presbycusis. Hearing Res. 88, 19-26, 1995. ___________________Joseph P Walton, PhD____________________ Frisina, R.D., Walton, J.P., and Karcich, K.J. Dorsal cochlear nucleus single neurons can
enhance temporal processing capabilities in background noise. Exp. Brain Res. 102, 160-164, 1994. Swartz, K., Walton, J.P., Hantz, E., Goldhammer,E., Crummer, G.C., and Frisina, R.D. P3
event-related potentials and performance of young and old subjects for music perception tasks. International J. Neuroscience, 78, 223-229, (1994). Crummer, G.C., Walton, J.P., Hantz, E. and Frisina, R.D. Neural processing of timbre and
non-musical stimuli by musicians, non-musicians and musicians processing absolute pitch. J. Acoustical Society of America, 95: 2720-2728, (1994). Swartz, K., Walton, J.P., Crummer, G.C., Hantz, E.C. and Frisina, R.D. P3 event-related
potentials and performance of healthy old and Alzheimer's dementia subjects for music perception tasks. Psychomusicology, 11, 96-118 (1992). Wayman, J., Frisina, R., Hantz, E., Crummer, G.C. and Walton, J.P. Effects of musical
training and absolute pitch on neural processing of sine-tones. J. Acoustical Society America, 91, 3527-3531 (1992). Kelly, P., Frisina, R.D., Zettel, M., and Walton, J.P. Differential calbindin-like immunoreactivity
in the brainstem auditory system of the chinchilla. J. Comparative Neurology, 320 196-212 (1992). Hantz, E.C., Crummer, G.C., Wayman, J.W., Walton, J.P. and Frisina, R.D. Effects of musical
training and absolute pitch on the neural processing of melodic intervals: A P3 event-related study. Music Perception, 10, 25-42 (1992). Gerhardt, K.G. and Walton, J.P. Binaural acoustic reflex activity after short-term noise
exposure in the decerebrate chinchilla. International J. of Audiol. 25, 309-320, 1987. Dolan, D.F., Teas, D.C. and Walton, J.P. Postnatal development of physiological responses in
auditory nerve fibers. J. Acoustical Soc. Am. 78, 544-554, 1985. Dolan, D.F., Teas, D.C. and Walton, J.P. Relation between discharges in auditory nerve fibers
and the whole-nerve response by forward masking: An empirical model for the AP. J. Acoustical Soc. Am. 73, 580-591, 1983. Book Chapters
Canlon, B. , Illing, R.B. and Walton, J. P. The cell biology and physiology of the aging central
auditory pathway. The Aging Auditory System, Ed. Gordon-Salant, Frisina, R.D., Popper, A.N., Fay R.R. Springer Press. 2009. Frisina, R. D. and Walton, J. P., Aging of the mouse central auditory system. Handbook of
Mouse Auditory Research: From Behavior to Molecular Biology, Ed. James P. Willott, CRC Press, NY Chapter, 22, 2001. Ison, J. R., Walton, J. P., Frisina, R. D. and O’Neill, W. E. Elicitation and inhibition of the startle
reflex by acoustic transients: Studies of age-related changes in temporal processing. Handbook of Mouse Auditory Research: From Behavior to Molecular Biology J.F. Willott, Ed. CRC Press, Chapter 25, 2001. Frisina R. D. and Walton, J. P., Neuroanatomy of the Mouse Central Auditory System.
Handbook of Mouse Auditory Research: From Behavior to Molecular Biology eds. J. Willott, CRC Press. Chapter 18, 2001. Walton, J. P. and Burkard, R. Neurophysiological manifestations of aging in the peripheral and
central auditory nervous system. Functional Neurobiology of Aging eds. P. R. Hof and C. V. Mobbs, Academic Press, 581-599.
Published Abstracts
Stolzberg, D., Dziorny A.C., Salvi, R., Walton J.P. (2010) Salicylate-Induced Tinnitus:
Alterations in Neuronal Activity in the Inferior Colliculus of Tranquilized Mice. Assoc. Res. Otolaryngology Abstracts. ___________________Joseph P Walton, PhD____________________ Dziorny A.C., Luekbe A.E., Walton J.P. (2009) Rescuing temporal processing with a novel augmented acoustic environment in an animal model of congenital sensorineural hearing loss: Is there a critical period? Assoc. Res. Otolaryngology Abstracts. Vollo, J., Polesskaya, O., Luebke, A.E., Collins, D., Zhu, X., Walton, J.P., Frisina, R.D., Dewhurst, S. (2009) Novel cochlear-specific isoform of mixed lineage kinase 3. Society for Neuroscience. Dziorny A.C., Luekbe A.E., Walton J.P. (2009) Rescuing temporal processing with a novel augmented acoustic environment in an animal model of congenital sensorineural hearing loss: Is there a critical period? Assoc. Res. Otolaryngology Abstracts. Dziorny A.C., Luekbe A.E., Walton J.P. (2008) Central auditory temporal and spectral processing deficits in the prestin-null mouse. Program No. 168, Society for Neuroscience. Brimijoin, W. O., Walton, J. P. (2008) Aging Affects Nonlinear Features of Post-Excitatory Suppression in the Mouse. Assoc. Res. Otolaryngology Abstracts. Leong, U., Barsz, K., Allen, PD and Walton, J. (2008) Neural correlates of age-related declines in frequency selectivity in the auditory midbrain. Assoc. Res. Otolaryngology Abstracts. Eddins, D. A., Gordin, A., Brimijoin, W. O., Walton, J. P. (2008) Far-field auditory evoked responses to amplitude modulated noise in young and aged mice. Assoc. Res. Otolaryngology Abstracts. Brimijoin, W. O., Walton, J. P. (2008) Aging affects the strength and frequency-dependence of a potential echo-suppression mechanism in the inferior colliculus. British Society of Audiology Ann. Convention, . Walton, J.P. (2007). Neural correlates of temporal processing deficits in a mouse model of presbycusis. Program No. 167 San Diego, CA: Society for Neuroscience. Diehl, M, O’Neill, W. and Walton, J.P. (2007) Alteration in auditory midbrain receptive fields following exposure to an augmented acoustic environment. Program No. 167 San Diego, CA: Society for Neuroscience. Walton J.P., Allen P.D., Schmuck. (2007). Increasing GABA alters receptive field properties in the inferior colliculus of old CBA mice. Assoc. Res. Otolaryngology Abstracts. Barsz, K., Allen, P., Schmuck, N., Walton, J. (2007) Encoding of brief gaps between cross- azimuth markers in auditory midbrain neurons from young and old CBA mice. Assoc. Res. Otolaryngology Abstracts. Brimijoin, O. and Walton, J. (2007) Tonal Patterns Reveal Complex Post-Excitatory Suppression in Mouse Inferior Collicular Neurons. Assoc. Res. Otolaryngology Abstracts. Vasilyeva, O., Luebke, A., Zuo, J., Walton, J.P. (2006). Prestin Knock-Out Mice Exhibit Temporal-Processing Deficits in the Inferior Colliculus. Assoc. Res. Otolaryngology Abstracts. Walton J.P., Allen P.D., O'Neill W.E., N. Schmuck. (2005) Age-related decline in temporal processing of spatial gap encoding in the inferior colliculus of the mouse. Program No. 164.20. Washington, DC: Society for Neuroscience Schmuck N., Allen P.D., Walton, J.P (2005) Neural Correlates of Across Channel Gap Detection in the Mouse Inferior Colliculus. Assoc. Res. Otolaryngology Abstracts,. Walton J.P., Allen P.D., Barsz, K. (2005) Comparison of online and offline spike sorting to classify multi-channel receptive field recordings from mouse inferior colliculus neurons. Assoc. Res. Otolaryngology Abstracts. Barsz K., Walton J.P. (2005). Inferior Colliculus Neurons Extract Temporal Features of Signals Presented in Background Noise. Assoc. Res. Otolaryngology Abstracts. Jeyakumar, A., Schmuck N., Allen P.D., Joho, R., Walton, J.P (2005). Neural Correlates of Temporal Processing in the Inferior Colliculus of Mice Lacking the Kv3.1 Voltage-Gated Potassium Channel. Assoc. Res. Otolaryngology Abstracts, Abstr 28. ___________________Joseph P Walton, PhD____________________ Allen P.D., Barsz K., Ison J.R., Walton J.P.(2005) Effects of age on behavioural and electrophysiological measures of auditory signal-in-noise processing. Program No. 164.3. Washington, DC: Society for Neuroscience, 2005. Barsz, K. and Walton, J.P. Masked Thresholds in the Inferior Colliculus: Relationships to Gap Encoding and Frequency Selectivity. Assoc. Res. Otolaryngology Abstracts, 2004. Walton, J.P., Schmuck, N., and Allen, P.D. Neural Correlates of Temporal Processing in the Inferior Colliculus of Mice Lacking the Kv1.1 Voltage-Gated Potassium Channel. Assoc. Res. Otolaryngology Abstracts, 2004. Barsz, K. Ison, J. R., Allen, P. D., Walton, J. P. Behavioral and single-unit IC responses of CBA mice to partially filled gaps in noise. Assoc. Res. Otolaryngology Abstracts, 2004. Schmuck, N., Allen, P., Ison, J., Walton, J.P. Neural representation of amplitude modulated sounds in the cochlear nucleus of mice lacking the Kv1.1 potassium channel. Assoc. Res. Otolaryngology Abstracts, 2004. Allen, P.D., Ison, J.R. Bowers, W.J., Patel, M., Frisina, R.D., Walton, J.P. KCNA1 Knockout Mice Have Deficits in High Frequency SAM Evoked Potentials Recorded in the Inferior Colliculus. Assoc. Res. Otolaryngology Abstracts. 2002. Barsz, K. and Walton, J. P. Mouse inferior colliculus neurons alter their coding of amplitude modulated signals under conditions of spatial masking. Assoc. Res. Otolaryngology Abstracts. 2002. Ison, J.R., Allen, P.D., Walton, J.P., Bowers, W.J. and Frisina, R.D. Normal threshold and suprathreshold ABR and ASR responses to acoustic onsets in KCNA1 Knockout Mice, but a reduced response to offsets. Assoc. Res. Otolaryngology Abstracts, 2002. Patel, M., Castro, J., Walton, J.P. Inferior colliculus (IC) near-field evoked responses following central reorganization in the C57Bl/6J mouse. Assoc. Res. Otolaryngology Abstracts. 2002. Simon, H., and Walton, J.P. Age-related alterations in rate encoding of amplitude modulated sounds in inferior colliculus neurons in the CBA mouse. Assoc. Res. Otolaryngology Abstracts, 2001. Walton, J.P. and Winkle, M. GABA and glycine sculpt modulation transfer functions of neurons in the inferior colliculus of the CBA mouse. Assoc. Res. Otolaryngology Abstracts, 2001. Allen, P.D., Burkard, R., Ison, J.R., O’Neill, W.E., and Walton, J.P. Impaired temporal acuity in the inferior colliculus of old mice, as revealed by prolonged recovery functions of near-field potentials to gaps in noise. Assoc. Res. Otolaryngology Abstracts, 2001. Barsz, K., Ison, J.R. and Walton, J.P. Masked thresholds in the mouse: Comparable results from single cells in the inferior colliculus and from behavior. Assoc. Res. Otolaryngology Abstracts, 2001. Virag, T., Allen, P.D., Ison, J.R. and Walton, J.P. Human observers are equally sensitive to differences in rise versus fall time at the edge of an asymmetric gap envelope for gap detection and salience. Assoc. Res. Otolaryngology Abstracts, 2001. Allen, P.D., Barsz, K., Ison, J.R., O’Neill, W.E. and Walton, J.P. Gap-detection in behaving mice for octave band noise compared to inferior colliculus (IC) gap-detection for neurons of different best frequency (BF). Society of Neuroscience Abstracts, 2000. Barsz, K., Walton, J.P., and Wilson, W.W. Tonic units in the mouse inferior colliculus (IC) differentially encode gaps in background noise. . Assoc. Res. Otolaryngology Abstracts Walton, J.P., Barsz, K., and Wilson, W.W. Age-related alterations in processing amplitude modulated signals in background noise in the mouse inferior colliculus. Assoc. Res. Walton, J.P., Barsz, K. and Ison, J.R. Age-related indices of response variability are found in single-unit correlates of gap detection. Assoc. Res. Otolaryngology Abstracts. 21, 208, 1998. Walton, J.P., Barsz, K., Wilson, W.W., Lynch-Armour, M. and Frisina, R.D. Aging and ___________________Joseph P Walton, PhD____________________ sensorineural hearing loss affect the neural processing of temporal gaps in ongoing sound. Society of Neuroscience Abstracts 23, 2069 (1997). Walton, J.P. Barsz, K. and Thomas, G. Age-related changes in the neural processing of gaps presented in quiet and in background noise in the mouse inferior colliculus. Society of Neuroscience Abstracts 22, 1822 (1996). Spongr, V. Walton, J.P., Frisina, R., Kazee, A.M. and Salvi, R.J. Hair cell loss and synaptic loss in the inferior colliculus of the C57Bl/6 mouse and its relationship to abnormal temporal processing. Acoustical Signal Processing in the Central Auditory System, (1996). Lynch-Armour, M.A., Frisina, R.D., Walton, J.P., and Lynd-Balta E.L. Age-related plasticity in inputs to a functionally characterized region of the inferior colliculus of the CBA mouse model of presbycusis. Society of Neuroscience Abstracts 22, 1823 (1996). Benson, P.K. & Walton, J.P. Gap detection by inferior colliculus neurons is altered by minimal changes in envelope rise time. Assoc. Res. Otolaryngology Abstracts 19, 372 (1996). Walton, J.P. & Wilson, W.W. Properties of neurons specialized for encoding silent gaps in the presence of background noise in the inferior colliculus of the CBA mouse. Assoc. Res. Otolaryngology Abstracts 19, 371 (1996). Walton, J.P., Wilson, W.W., Mees, A.J., O'Neill, W.E. and Frisina, R.D. Age-related alteration in temporal processing of amplitude modulation and silent gaps in the inferior colliculus of the CBA mouse. Assoc. Res. Otolaryngology Abstracts 18, 284 (1995). Frisina, R.D., Karcich, K.J., Tracy, T., Sullivan, D.M., Walton, J.P. and Colombo, J.C. Preservation of amplitude modulation coding in the presence of background noise by auditory nerve fibers. Assoc. Res. Otolaryngology Abstracts 18, 694 (1995). Lynch-Armour, M.A., Frisina, R.D., McReynolds, E.E., Byrd, J. and Walton, J.P. Cochlear nucleus inputs to a functionally-characterized region of the inferior colliculus decline with age for the CBA mouse model of presbycusis. Assoc. Res. Otolaryngology Abstracts 18, 282 (1995). Byrd, J., Frisina, R.D., Lynch-Armour, M.A. and Walton, J.P. Superior olivary complex inputs to the dorsomedial inferior colliculus of the CBA mouse model of presbycusis remain stable with age. Assoc. Res. Otolaryngology Abstracts 18, 283 (1995). Tracy, T., Frisina, R.D., Karcich, K.J., Sullivan, D.M & Walton, J.P. Preservation of amplitude modulation encoding in the presence of background noise by chinchilla auditory nerve fibers. Assoc. Res. Otolaryngology Abstracts 18, 174 (1995). Frisina, R.D., Walton, J.P., Lynch-Armour, M.A. & Byrd, J.D. Aging-related changes in connections to a functionally-characterized region of the inferior colliculus of the CBA mouse model of presbycusis. Society for Neuroscience Abstracts 21, 908 (1995). Walton J.P., Orlando, M.S. and Klien, A.J. Comparison of EOAE and ABR Hearing Screening Techniques: I. Non-Sedated Infants. American Academy of Audiology, 2, 34, 1994. Klien, A.J., Orlando, M.S. and Walton, J.P. Comparison of EOAE and ABR Hearing Screening Techniques: I. Sedated Infants. American Academy of Audiology, 2, 34, 1994. Walton,J.P., Frisina, R.D, and O'Neill, W. Effects of age on single-unit temporal processing in the inferior colliculus of the CBA mouse model of presbycusis. Assoc. Res. Otolaryngology Abstracts 16, 324 (1994). Ison, J., Walton, J.P., O'Neill, W., Zettel, M. Manzur, K. and Bocirnea, A. Age and strain effects on the processing of acoustic transients in CBA and C57/B1 mice and hybrid offspring. Assoc. Res. Otolaryngology Abstracts 16, 324 (1994). Holt, T.A., Walton, J.P. and Orlando, M.S. Characteristics of transient EOAEs in infants with varying degrees of conductive hearing loss. Assoc. Res. Otolaryngology Abstracts 16, 135 (1994). Orlando, M.S., Snell, K. and Walton, J.P. Physiological and psychophysical forward masking. Assoc. Res. Otolaryngology Abstracts 16, 164 (1994). ___________________Joseph P Walton, PhD____________________ Armour, M. Frisina, R.D., Walton, J.P., O'Neill, W.E. and Flood, D. Outputs of a functionally- characterized region of the CBA mouse model of presbycusis. Society for Neuroscience (1993). Walton, J.P., Frisina, R.D, and O'Neill, W. Neural processing of temporal gaps in the inferior colliculus of the awake young and old CBA mouse. J. Acoust. Society of America 93, 2360 (1993). Walton, J.P., Frisina, R.D, O'Neill, W. and Flood, D. Connections of a physiologically characterized region of the inferior colliculus in the CBA mouse model of presbycusis. Assoc. Research Otolaryngology Abstr. 16, 11 (1993). Frisina, R.D., Walton, J.P., Karcich, K.J. and Colombo, J. Background noise modifies single auditory nerve and cochlear nucleus neurons encoding of amplitude modulation. Assoc. Research Otolaryngology Abstr. 16, 40 (1993). Bowen, P., Ison, J., Barlow, J. O'Neill, W., Zettel, M. and Walton, J. Diminished effects of acoustic transients on the acoustic startle reflex in the aged F344 rat. Assoc. Research Otolaryngology Abstr. 16, 52 (1993). Frisina, R.D., Walton, J.P., and Karcich, K.J. Cochlear nucleus neural mechanisms preserve complex-sound feature encoding in the presence background noise. Acoustical Society of America, 93, 2431 (1993). Walton, J.P., Meierhans, L.R. and Frisina, R.D. Effect of sensorineural hearing loss on recovery from forward masking in the C57BL/6 and CBA mouse models of presbycusis. Assoc. Research Otolaryngology Abstr. 15, 65 (1992). Frisina, R.D., Walton, J.P., Karcich, K.J. and Colombo, J. Effects of background noise on the processing of amplitude modulation in the cochlear nucleus. Assoc. Research Otolaryngology Abstr. 15, 78 (1992). Sutton, Walton, J.P. and Orlando, M.S. Activation of the efferent system causes frequency specific alterations in transient evoked otoacoustic emissions. American Acad. Otolaryngology - AMA, 188, 1992. Lee, E., Orlando, M.S. and Walton, J.P. A comparison of tone burst evoked otoacoustic emissions utilizing two, three and five cycle stimuli. American Acad. Otolaryngology - AMA, 125, 1992. Walton, J.P. and Orlando, M.S. Transient otoacoustic emissions and ABR thresholds in high- risk infants. American Speech and Hearing Association, 234, 1991. Frisina, R.D. and Walton, J.P. Processing of rapid changes in sound amplitude in the cochlear nucleus in quiet and in the presence of noise. International Brain Research Organization - World Congress Abstr. 3, 164, 1991 . Ison, J.R., O'Neill, W.E. and Walton, J.P. Reflex inhibition by acoustic transients in aged CBA mice. Assoc. Research Otolaryngology Abstr. 14, 266 (1991). Orlando, M.S. and Walton, J.P. Effect of middle-ear status on click EOAEs in children. American Speech and Hearing Association, 235, 1991. Swartz, K.P., Walton, J.P., Hantz, E.C., Crummer, G.C., Goldhammer, E. and Frisina, R.D. P3 event related potentials elicited by music perception tasks in young, old and Alzheimer's dementia subjects. International Brain Research Organization - World Congress Abstr. 3, 11, 1991. Hantz, E.C., Walton, J.P., Crummer, G.C., Wayman, J.W. and Frisina, R.D. Event-related activity from musicians, non-musicians and absolute-pitch subjects during discrimination tasks involving musical timbre and melodic interval. International Brain Research Organization - World Congress Abstr. 3, 9, 1991 . Miller, C., Orlando, M. and Walton, J. Intensity dependent changes in click and tone-evoked otoacoustic emissions in young adults. American Academy of Otolaryngology - AMA, 190, 1991. ___________________Joseph P Walton, PhD____________________ Walton, J.P., Meierhans, L.J., Karcich, K.J. and Frisina, R.D. Recovery of forward masking in a young and middle-aged mouse model of presbycusis. Assoc. Research Otolaryngology Abstr. 25, 1991. Ison, J.R., O'Neill, W.E. and Walton, J.P. Reflex inhibition by acoustic transients in aged CBA mice. Assoc. Research Otolaryngology Abstr. 157, 1991. Walton, J.P., Tacci, J. and Hendricks-Munoz, K. Therapeutic management alters hearing outcome in infants with PPHN. American Speech and Hearing Assoc. 232, 1990. Papso, C.P. and Walton, J.P. Classification of false-positive ABR findings in suspected retrocochlear pathology. American Speech and Hearing Assoc. 162, 1990. Walton, J.P., Frisina, R.D., Zettel, M., and Kelley, P. Differential calbindin-like immunoreactivity in the chinchilla superior olivary complex. Assoc. Research Otolaryngology Abstr. 264, 1990. Frisina, R.D., Zettel, M., Kelley, P. and Walton, J.P. Selective calbindin-like immunostaining in the chinchilla dorsal cochlear nucleus exceeds that of the ventral cochlear nucleus. Assoc. Research Otolaryngology Abstr. 389, 1990. Hantz, E., Walton, J.P., Crummer, G.C., Wayman, J., and Frisina, R.D. Event-related activity recorded from musicians, non-musicians, and absolute-pitch subjects during discrimination tasks involving musical timbre and melodic interval. Assoc. Research Otolaryngology Abstr. 160, 1990. Swartz, K., Walton, J.P., Hantz, E., Crummer, G.C., Goldhammer, E. and Frisina, R.D. Discrimination and neural processing of musical stimuli in young, old and Alzheimer's dementia subjects. Assoc. Research Otolaryngology Abstr. 160, 1990. Wayman, J., Frisina, R.D., Crummer, G.C., Hantz, E.C., Walton, J.P. Effects of musical training and absolute pitch ability on event-related activity in response to sine tones. Assoc. Research Otolaryngology Abstr. 179, 1990. McDonald, M., Walton, J.P. and Powell, K. Therapeutic intervention and incidence of hearing loss in children with bacterial meningitis. American Speech Hearing Assoc. 169, 1989. Kelly, P., Frisina, R.D., Zettel, M. and Walton, J.P. Calbindin-like immunoreactivity in the brainstem auditory system of the chinchilla. American Acad. Otolaryngology - AMA, 1989. Hantz, E.C., Walton, J.P., Crummer, G.C., Swartz, K.P. and Frisina, R.D. Towards the establishment of a neural basis of music cognition. Canadian Acoustical Society J. 1988. Walton, J.P., Orlando, M.S. and Frisina, R.D. Speech recognition in hearing impaired elderly subjects using adaptive filtering amplification. American Speech Hear. Assoc., 146, 1988. Chuang, S.A., Frisina, R.D., Crummer, G.C. and Walton, J.P. Effects of varying chord progressions on P3 event-related potentials in musicians and non-musicians. J. Acoustical Society of America S26, 233 1988. Crummer, G.C., Walton, J.P., O'Neill, W.E. and Frisina, R.D. P3 event-related potentials recorded from musicians and non-musicians during discrimination tasks involving musical sounds. Assoc. Research Otolaryngology Abstr. 11, 1988. Orlando, M.S. and Walton, J.P. Effects of age, sensorineural hearing loss and stimulus rate on the auditory brainstem response. American Speech Hearing Assoc. 29, 133, 1987. Walton, J.P. and Orlando, M.S. Maturational changes in the auditory brainstem response using high stimulus rates. American Speech Hearing Assoc. 29, 133, 1987. Walton, J.P. and Teas, D.C. Differential masking of high and mid-frequency components of the cochlear action potential. American Speech Hearing Assoc. 28, 197, 1986. Walton, J.P. and Hendricks-Munoz, K. Serial auditory brainstem responses in infants with persistent fetal circulation. American Speech Hearing Assoc. 28, 165. 1986. Hendricks-Munoz, K. and Walton, J.P. Hearing loss in infants with PPHN. Pediatric Research ___________________Joseph P Walton, PhD____________________ Walton, J.P., Dalzell, L.E. and Hendricks-Munoz, K. Sensorineural hearing loss in infants with persistent fetal circulation. American Speech Hearing Assoc. 27, 152, 1985. Walton, J.P., Dalzell, L.E. and Merle, K.M. Auditory brainstem response in at-risk infants with normal hearing. American Speech Hearing Assoc. 27, 185 1985. Walton, J.P., Teas, D.C. and Dolan, D.F. The relation between the cochlear action potential and discharges of auditory nerve fibers elicited by a 2.5 kHz filtered click: Application of a segmental model. Assoc. Research Otolaryngology Abstr. 8, 77, 1985. Dolan, D.F., Teas, D.C. and Walton, J.P. Developmental changes in physiological responses of auditory nerve fibers in kittens. Assoc. Research Otolaryngology Abstr. 7, 60, 1984. Gerhardt, K.G. and Walton, J.P. Ultra-audiometric hearing sensitivity: A review and case study. FL Speech, Language-Hearing Assoc. Abstract 1983. Gerhardt, K.G., Walton, J.P., Moul, M.P. and Helper,E. Binaural acoustic-reflex activity following noise exposure in chinchilla. American Speech and Hearing Assoc. 25, 159, 1983. Teas, D.C., Hill, R.E., Dolan, D.F., Walton, J.P., Patterson, J. and Burdick, C. Spectrum of CM produced by high-intensity low frequency noise bands in chinchilla. J. Acoustical Society of America 67, Suppl. 588(A) 1980. Teas, D. C., Hill, R. E., Dolan, D. F., Walton, J. P., Patterson, J. and Burdick, C. Acoustic properties of external auditory canal in chinchilla, guinea pig, and man. J. Acoustical Society of America 67, Suppl. 588(A) 1980.
Invited Talks
“Age-related changes in neural processing of complex sounds: Implications of a loss of
inhibition in the auditory midbrain” Communication Sciences Dept., University of Buffalo.
November 2009.
“Neural correlates of temporal processing deficits in a mouse model of presbycusis, sensory
impairment, and treatment induced plasticity” Dept. of Otolaryngology Research Forum.
February 2008.
“Neural correlates of temporal processing deficits in a mouse model of presbycusis” Society for
Neuroscience, Mini-symposium. San Diego, CA, November 2007.
“Molecular genetics and the biology of deafness: The potential impact,” Rochester School for
the Deaf, Rochester, NY, February, 2002
“Neural correlates of temporal processing deficits in the inferior colliculus of aged mice,”
Acoustical Society of America, Atlanta, GA, June 2000.
“Functional specialization of auditory midbrain neurons for encoding sound intensity
decrements in the presence of background noise,” Advances in Hearing Science, University of
Syracuse, June 1999.
“The efficacy of universal newborn hearing screening,” Grand Rounds, University of Buffalo,
Department of Communication Disorders, August 1998.
"The role of temporal processing in pure word deafness and language-based learning
impairment", Audiology and Speech Pathology In-Service, April 1997.
"Age-related changes in temporal resolution in the auditory midbrain: single-unit gap detection",
Advances in Hearing Science, University of Buffalo, September 1996.
___________________Joseph P Walton, PhD____________________ "A window to the cochlea: Otoacoustic emissions in the diagnosis of hearing loss", Department of Audiology, Board of Cooperative Extension, Buffalo, NY, October 1995. "Gap detection by inferior colliculus neurons is altered by minimal changes in envelope rise time", Strong Children's Research Symposium, August 1995. "Properties of inferior colliculus neurons that are specialized for encoding silent intervals in background noise", Dept. of Surgery, Otolaryngology Div. 3rd Annual Research Forum, June 1995. "The Aging Auditory System: Neurophysiological correlates of presbycusis", Rochester Institute of Technology, Presidential Forum, May 1995. “The Aging Auditory System: Presbycusis,” Presidential Colloquium, Rochester Institute of Technology, May 1995. "Otoacoustic emissions in the assessment of hearing in high-risk graduates of intensive care nurseries", Dept. of Surgery, Otolaryngology Div. 2nd Annual Research Forum 1994. "The application of compression amplification in preserving speech in the presence of background noise" Annual Convention, New York Speech-Hearing-Language Association, Rochester NY, 1993. "Age-related alteration in the neural processing of acoustic transients in the CBA mouse model of presbycusis" Dept. of Surgery, Otolaryngology Div. 1st Annual Research Forum 1993. "Current views on the early and middle auditory evoked potentials in the audiological test battery", Hearing and Speech Center of Rochester, 1993. "Current views on the effect of sensorineural and conductive hearing loss on otoacoustic emissions" American Academy of Audiology. Nashville, TN, April 1992. "Diagnosis, treatment and management of the hearing-impaired infant", Special Lecture series on Human Health and Illness, University of Rochester Medical Center, May, 1992. "Hearing impairment and aging", Department of Neurology Grand Rounds, University of Rochester School of Medicine and Dentistry, October 1991. "Neural mechanisms of music perception: From ear to brain", Third International Conference on Music, Growth and Aging. Rochester, NY, July, 1991. "Recent advances in hearing technology and its impact on deaf education", International Congress on Deaf Education. Rochester, NY, July, 1990. "Early detection of acoustic neuromas using neurophysiological assessment" Neurology Grand Rounds, University of Rochester Medical Center, June, 1990. "Towards the establishment of a neural basis of music cognition", Canadian Acoustical Society. Toronto, Canada, October, 1988. ___________________Joseph P Walton, PhD____________________ "Neural basis of music cognition: Biomedical implications and future directions", 1988 Symposium - Music and Medicine, University of Rochester, June 30, 1988. "Incidence and etiology of sensorineural hearing loss in infants with persistent fetal circulation", Developmental Research Seminar Series, Psychology Department, University of Rochester, February 11, 1987. "Detection of hearing loss in children", Board of Cooperative Education Services, State of New York, Rochester, New York, December, 1986. "Auditory brainstem response in detection of eighth nerve and brainstem lesions", Otolaryngology Associates, Waterville, Maine, August, 1986. "Current status of auditory brainstem response testing in the neonatal high-risk population", Pediatric Grand Rounds, Rochester General Hospital, May, 1986. "Detection of hearing loss in at-risk infants", NYS-ASHA, April, 1986. "Assessment of hearing in infants using the auditory brainstem response", New York Speech and Hearing Association annual meeting, April, 1986. "Encoding of speech by the peripheral auditory system", Department of Audiology, University of Rochester Medical Center, Inservice, September, 1985. "Auditory brainstem response in neurological and auditory assessment", Genesee Valley Speech and Hearing Association, September, 1985. "Diagnostic significance of the acoustic reflex in retrocochlear pathology", Rochester Otolaryngology Seminars, Rochester Academy of Medicine, February, 1985. “The new frontier: The role of molecular biology in treating genetic hearing loss,” Genesee Valley Speech and Hearing Association, Rochester, NY, March 2001. "Effects of Aminoglycocides on Infant Hearing Sensitivity", Department of Audiology, University of Rochester Medical Center, In-service, November, 1984. "Maturation of the Human Auditory Brainstem Response", Department of Otolaryngology, University of Rochester, School of Medicine, March, 1984. "Frequency Specificity of the Cochlear Action Potential Derived from Auditory-Nerve Fiber Responses", Department of Communicative Disorders, Northern Illinois University, February, 1984. Reviewer for Journals: Journal of Neuroscience, Neuroscience, Journal of Neurophysiology,
Hearing Research, Ear and Hearing, International Journal of Audiology, Pediatrics, Journal of
Speech and Hearing Research, Developmental Psychobiology, Journal of the Acoustical
Society of America.

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