| The relationship between quiet threshold and the forward-masking temporal effect. | |
| | |
MedLine Citation:
|
PMID: 20330313 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
Research in our laboratory has shown that the temporal effect (TE) in simultaneous masking is consistent with a decrease in gain, possibly mediated by the medial olivocochlear reflex (MOCR). The TE in simultaneous masking is a decrease in threshold signal-to-masker ratio for a signal at masker onset when a precursor is added. This work has been extended to a forward-masking paradigm. A growth of masking (GOM) function is measured with a short-duration off-frequency masker (which should not activate the MOCR) and a 4-kHz signal. Then the masker level is fixed at a point on the lower leg of the GOM function, and threshold is measured with a long-duration precursor which is intended to activate the MOCR. The estimated input-output function is compared for a precursor at and well below the signal frequency. The difference in thresholds is the TE, which is also a measure of the change in gain. In simultaneous masking, the size of the TE decreases with increasing quiet threshold. In the present study, this relationship was examined for the forward-masking TE. The TE was measured as a function of precursor level for listeners who had a range of quiet thresholds, including listeners with mild cochlear hearing impairment. [Research supported by a grant from NIH(NIDCD) R01 DC008327.]. |
| | |
Authors:
|
Elizabeth A Strickland; Yonit A Shames |
Related Documents
:
|
11519573 - Forward- and simultaneous-masked thresholds in bandlimited maskers in subjects with nor... 3624643 - Factors affecting thresholds for sinusoidal signals in narrow-band maskers with fluctua... 18985163 - Mapping of circaseptan and circadian changes in mood. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: The Journal of the Acoustical Society of America Volume: 127 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2010 Mar |
Date Detail:
|
Created Date: 2010-03-24 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: United States |
Other Details:
|
Languages: eng Pagination: 1810 Citation Subset: IM |
Affiliation:
|
estrick@purdue.eduDept. SLHS, Purdue Univ., 500 Oval Dr., West Lafayette, IN 47907. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Interaural time difference thresholds as a function of the duration of the beginning of a sound in h...
Next Document: Psychophysical tuning curves and recognition of highpass and lowpass filtered speech for a person wi...