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 Curriculum
Vitae
Speech, Language, and Hearing Sciences
Purdue University, W. Lafayette, IN 47907
Telephone: 765-494-3793
E-mail: rkrish@purdue.edu
Audiology
B.Sc., 1973 The University of Mysore, INDIA
M.A., 1980 Memphis State University, Memphis, TN
Ph.D., 1983 The University of Texas, Dallas, TX
Professional Positions:
1983-1984: Post-graduate Researcher, Dept. of Neurology,
The University of California, Irvine, CA
1984-1987: Director, Evoked Potential Laboratory, Chicago,
IL
1987-1989: Assistant Professor, Audiology, University
of Pittsburgh, PA
1990-1998: Assistant/Associate Professor, Audiology,
University of Tennessee, Knoxville, TN
1998-Present: Associate Professor, Audiology/Hearing
Science, Purdue University, W.Lafayette, IN
Member:
American Speech Language Hearing Association
Association for Research in Otolaryngology
American Academy of Audiology
Publications
Ananthanarayan AK., Xu Y., Gandour J (2004). Human frequency
following responses: representation of pitch contours
of Chinese tones. Hear Res. 189:1-12.
Ananthanarayan A.K., Pandya P.P (2004, In Press). Evaluation
of the human frequency following response
2f1-f2 distortion product. J. Am. Acad. Audiol.
Wilson J., Ananthanarayan A.K. (2004). Human frequency
following responses to binaural masking level difference
stimuli (in review, J. Am. Acad. Audiol.).
Katbamna B., Brown JA., Ide CF; Ananthanarayan A.K.
(2004). Auditory brainstem response thresholds and characteristics
measured in response to sound pressure stimulation in
the aquatic frog Xenopus Laevis. In review, JARO.
Ananthanarayan A.K. (2002). Human frequency following
response: representation of steady-state vowels. Hear.
Res. 166:192-201.
Lucas J.R., Freeberg, T.M., Ananthanarayan A.K (2002).
A comparative study of avian auditory brainstem responses:
correlations with phylogeny and vocal complexity, and
seasonal effects. J. Comp. Physiol. 188: 981-992.
Plyler , P., Ananthanarayan AK (2001). Human frequency
following responses: representation of
second formant transitions in normal and hearing-impaired
listeners. J. Am. Acad. Audiol., 12:523-533.
Ananthanarayan A.K., Parkinson J. (2000). Human frequency
following response: representation of tonal
sweeps. J. Audiol. Neurootol.,5(6):312-321.
Ananthanarayan A.K. (1999). Human frequency following
responses to two-tone approximations of steady-
State vowels. J. Audiol.Neurootol., 4:95-103.
Ananthanarayan A.K. (1998). Binaural interaction in
the human frequency following response: effects of
interaural intensity difference. J Audiol.Neurootol,
3:291-299.
Ananthanarayan A.K., Durrant J.J (1994). Comparison
of transducer radiation in a deaf subject and a resistor-network simulator. British J. Audiol. 28, 149-154.
Ananthanarayan A.K., Durrant J.J. (1992). The frequency
following response and the onset Response:
evaluation of frequency specificity using a forward-masking
paradigm. Ear Hear. , 13(4):228-232.
Moore E.J., Semela J.J.M., Ananthanarayan A.K. (1992).
The I' potential of the brain-stem auditory evoked potential.
Scand. Audiol.,21:153-156.
Ananthanarayan A.K., Durrant J.J. (1991). On the origin
of wave II of the Auditory Brainstem Responses. Ear
Hear., 12(3):174-179.
Ananthanarayan A.K., Gerken G.M. (1987). Response enhancement
and reduction of the ABR in a forward-masking paradigm. Electroencephal Clin Neurophysiol.,
66:427-439.
Ananthanarayan A.K., Gerken G.M. (1983). Post-stimulatory
effects on the ABR: partial masking and
enhancement. Electroencephal Clin Neurophysiol., 55(2):223-226.
Ananthanarayan A.K., Moore E.J. (1983). Effects of ipsilateral
and contralateral masking on the auditory
brainstem responses. In, Moore EJ (ED), Bases of ABR,
Grune and Stratton, New York.
Goals of Currently Active Research:
1. Evaluation of encoding of pitch relevant information
in Chinese tones. The goal is determine if language
relevant information is contained in FFR for listeners
with native tonal language (Chinese) versus non-tonal
language listeners (English).
2. Evaluation of the electrophysiological correlate
of upward spread of masking using the surface recorded
human frequency following response (FFR). The goal is
to characterize the FFR correlate of upward-spread
of masking in normal and hearing-impaired individuals
using two-tone approximations of vowels.
3. Evaluation of FFR to tonal sweep trajectories in
children with normal language and children with specific
language impairment (SLI). The goal is to determine
if aspects of temporal processing is disrupted in children
with SLI.
4. Evaluation of the FFR correlates of cochlear non-linearity
(2f1-f2). The goal is to compare DPOAE and FFR-DP to determine if these responses share response characteristics
as expected.
Goals of Research During the Past three years:
1. Determine if the human FFR can encode steady-state
speech-like sounds.
2. Determine if the human FFR can encode time variant
frequency presented in tonal sweeps.
3. Determine if nonlinear phenomena like two-tone suppression
can be evaluated using the FFR.
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