Format

Send to

Choose Destination
J Assoc Res Otolaryngol. 2008 Dec;9(4):399-406. doi: 10.1007/s10162-008-0143-x. Epub 2008 Oct 15.

The role of temporal fine structure processing in pitch perception, masking, and speech perception for normal-hearing and hearing-impaired people.

Author information

1
Department of Experimental Psychology, University of Cambridge, Downing Street, Cambridge, CB2 3EB, UK. bcjm@cam.ac.uk

Abstract

Complex broadband sounds are decomposed by the auditory filters into a series of relatively narrowband signals, each of which can be considered as a slowly varying envelope (E) superimposed on a more rapid temporal fine structure (TFS). Both E and TFS information are represented in the timing of neural discharges, although TFS information as defined here depends on phase locking to individual cycles of the stimulus waveform. This paper reviews the role played by TFS in masking, pitch perception, and speech perception and concludes that cues derived from TFS play an important role for all three. TFS may be especially important for the ability to "listen in the dips" of fluctuating background sounds when detecting nonspeech and speech signals. Evidence is reviewed suggesting that cochlear hearing loss reduces the ability to use TFS cues. The perceptual consequences of this, and reasons why it may happen, are discussed.

PMID:
18855069
PMCID:
PMC2580810
DOI:
10.1007/s10162-008-0143-x
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for Springer Icon for PubMed Central
Loading ...
Support Center