Journal article
Effects of stimulus frequency on two‐tone suppression: A comparison of physiological and psychophysical results
The Journal of the Acoustical Society of America, Vol.63(6), pp.1878-1886
06/1978
DOI: 10.1121/1.381929
PMID: 681620
Abstract
The effects of stimulus frequency on two-tone suppression were investigated in single auditory-nerve fibers of anesthetized cats and compared with human psychophysical data. In the physiological experiment, both average discharge rate and phase-locked activity were measured in response to one and two-tone stimuli. The first component f1produced an increase in rate above spontaneous activity when presented alone. The second tone f2was always well below the fiber’s characteristic frequency and was held at a fixed sound pressure level appropriate to produce two-tone suppression. Responses were plotted as a function of stimulus level of the first tone both alone and in the presence of f2. For different values of f1with f2fixed, suppression was maximum with f1near fiber CF. In the psychophysical experiment, similar stimulus parameters of f1and f2were used as the masker in a forward-masker paradigm. In this experiment the addition of the second masker tone at frequency f2could produce less masking of the signal. When f1was varied with f2fixed, the relative decrease in masking, analogous to suppression, was greatest when f1was equal to the signal frequency. © 1978, Acoustical Society of America. All rights reserved.
Details
- Title: Subtitle
- Effects of stimulus frequency on two‐tone suppression: A comparison of physiological and psychophysical results
- Creators
- Paul J. Abbas
- Resource Type
- Journal article
- Publication Details
- The Journal of the Acoustical Society of America, Vol.63(6), pp.1878-1886
- DOI
- 10.1121/1.381929
- PMID
- 681620
- ISSN
- 0001-4966
- eISSN
- 1520-8524
- Language
- English
- Date published
- 06/1978
- Academic Unit
- Otolaryngology
- Record Identifier
- 9984383884002771
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