Encoding and discrimination of vowel-like sounds (Tan and Carney 2005)

"The sensitivity of listeners to changes in the center frequency of vowel-like harmonic complexes as a function of the center frequency of the complex cannot be explained by changes in the level of the stimulus [Lyzenga and Horst, J. Acoust. Soc. Am. 98, 1943–1955 (1995)]. Rather, a complex pattern of sensitivity is seen; for a spectrum with a triangular envelope, the greatest sensitivity occurs when the center frequency falls between harmonics, whereas for a spectrum with a trapezoidal envelope, greatest sensitivity occurs when the center frequency is aligned with a harmonic. In this study, the thresholds of a population model of auditory-nerve (AN) fibers were quantitatively compared to these trends in psychophysical thresholds. Single-fiber and population model responses were evaluated in terms of both average discharge rate and the combination of rate and timing information. ..."

Cell Type(s): Auditory nerve

Model Concept(s): Temporal Pattern Generation; Audition

Simulation Environment: C or C++ program (web link to model)

Implementer(s): Tan, Qing


Tan Q, Carney LH. (2005). Encoding of vowel-like sounds in the auditory nerve: model predictions of discrimination performance. The Journal of the Acoustical Society of America. 117 [PubMed]

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