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Assessing mechanisms of frequency discrimination by comparison of different measures over a wide frequency range.

Accepted version
Peer-reviewed

Type

Article

Change log

Authors

Moore, Brian CJ 
Vinay 

Abstract

It has been hypothesized that auditory detection of frequency modulation (FM) for low FM rates depends on the use of both temporal (phase locking) and place cues, depending on the carrier frequency, while detection of FM at high rates depends primarily on the use of place cues. To test this, FM detection for 2 and 20 Hz rates was measured over a wide frequency range, 1-10 kHz, including high frequencies for which temporal cues are assumed to be very weak. Performance was measured over the same frequency range for a task involving detection of changes in the temporal fine structure (TFS) of bandpass filtered complex tones, for which performance is assumed to depend primarily on the use of temporal cues. FM thresholds were better for the 2- than for the 20-Hz rate for center frequencies up to 4 kHz, while the reverse was true for higher center frequencies. For both FM rates, the thresholds, expressed as a proportion of the center frequency, were roughly constant for center frequencies from 6 to 10 Hz, consistent with the use of place cues. For the TFS task, thresholds worsened progressively with increasing frequency above 4 kHz, consistent with the weakening of temporal cues.

Description

Keywords

Humans, Auditory Threshold, Cues, Caffeine, Excipients, Frailty

Journal Title

Sci Rep

Conference Name

Journal ISSN

2045-2322
2045-2322

Volume Title

Publisher

Springer Science and Business Media LLC
Sponsorship
Medical Research Council (G0701870)
Medical Research Council (G8717539)
Medical Research Council