| Ear and contralateral masker effects on auditory temporal gap detection thresholds. | |
| | |
MedLine Citation:
|
PMID: 18761067 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
A temporal processing advantage is thought to underlie the left hemisphere dominance for language. One measure of a temporal processing advantage is temporal acuity or resolution. A standard paradigm for measuring auditory temporal resolution is gap detection in its "within-channel" and "between-channel" forms. Previous experiments investigating a right ear advantage for within-channel gap detection have yielded conflicting results, and between-channel gap detection has not previously been studied for ear differences. In the present study, the two types of gap detection task were employed, under each of three contralateral masking conditions (no noise, continuous noise and interrupted noise). An adaptive tracking procedure was used to measure the minimal detectable gap at each ear (and therefore, the temporal acuity of the contralateral hemisphere). A significant effect of masking noise was observed in both of the gap detection tasks. Within-channel gap threshold durations were longer in the interrupted noise condition for both ears. Between-channel gap threshold durations were shorter in the interrupted noise condition at the left ear, with a trend in the same direction at the right ear. The study found no significant difference between the ears in thresholds in either gap detection task in any of the masking conditions. This suggests that if the left cerebral hemisphere has a temporal processing advantage, then it is not in the form of acuity for temporal gap detection. |
| | |
Authors:
|
Martha E Carmichael; Susan E Hall; Dennis P Phillips |
Related Documents
:
|
1918627 - Effective attenuation of signals in noise under focused attention. 11521847 - Stream segregation of narrow-band noise bursts. 19415437 - Spectral changes of near-infrared spectroscopy signals in migraineurs with aura reveal ... 12853367 - Auditory cortex lesions in the rat impair both temporal acuity and noise increment thre... 10666757 - The comparative effects of drive and test stimulus intensity on myocardial excitability... 7667927 - Luminance discrimination, color contrast, and multiple mechanisms. |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2008-08-15 |
Journal Detail:
|
Title: Hearing research Volume: 245 ISSN: 0378-5955 ISO Abbreviation: Hear. Res. Publication Date: 2008 Nov |
Date Detail:
|
Created Date: 2008-11-10 Completed Date: 2009-02-04 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 7900445 Medline TA: Hear Res Country: Netherlands |
Other Details:
|
Languages: eng Pagination: 18-23 Citation Subset: IM |
Affiliation:
|
Hearing Research Laboratory, Department of Psychology, Dalhousie University, Halifax, NS, Canada B3H 4J1. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Acoustic Stimulation Adolescent Adult Aged Aged, 80 and over Auditory Threshold / physiology* Female Humans Male Middle Aged Perceptual Masking / physiology* Time Factors Young Adult |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Characterization of a potassium-based leak conductance in the medial nucleus of the trapezoid body.
Next Document: A review of the taxonomy, ethnobotany, chemistry and pharmacology of Sutherlandia frutescens (Fabace...