摘要:

Psychophysical tuning curves were obtained from Old World monkeys via a positive reinforcement operant procedure. These tuning curves were found in two different manners. In the first, simultaneous tone‐on‐tone masking was utilized, while the second procedure involved a forward masking paradigm. In this condition, the subjects' task was to detect brief (30 ms) tone pulses which followed each of a train of masking pulses. With both paradigms, threshold masker levels were determined by a tracking procedure. In comparing the two types of curves, it was found that the forward masking tuning curves were generally more sharply tuned than were the simultaneous masking tuning curves at a given frequency. This fact was verified by computingQ10values for the individual curves, as well as by a comparison of the slopes of the tuning curves under the two masking conditions.

ISSN:0001-4966    

DOI:10.1121/1.2018043

出版商:Acoustical Society of America    

年代:1980

数据来源: AIP

摘要:

Comparison stimuli, incremented in 20‐Hz intervals in the frequency range of 660 to 1400 Hz, were matched in loudness to a standard stimulus of 600 Hz. All comparisons were performed in the presence of a bandlimited noise pattern having an increase in intensity between 880 and 1200 Hz. No suppression effects analogous to auditory Mach bands were obtained using this direct masking technique. The comparison stimuli and noise pattern were then presented in a forward masking paradigm and suppression effects were obtained at the intensity flections in the noise pattern. The results of both experiments closely agree with earlier results. [T. Houtgast. J. Acoust. Soc. Am.51,1885–1894 (1972)].

ISSN:0001-4966    

DOI:10.1121/1.2018048

出版商:Acoustical Society of America    

年代:1980

数据来源: AIP