| Gap detection with sinusoids and noise in normal, impaired, and electrically stimulated ears. | |
| | |
MedLine Citation:
|
PMID: 3356814 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Thresholds for the detection of temporal gaps were measured using two types of signals to mark the gaps: bandpass-filtered noises and sinusoids. The first experiment used seven subjects with relatively flat unilateral moderate cochlear hearing loss. The normal ear of each subject was tested both at the same sound-pressure level (SPL) as the impaired ear, and at the same sensation level (SL). Background noise was used to mask spectral "splatter" associated with the gap. For the noise markers, gap thresholds tended to be larger for the impaired ears than for the normal ears when the comparison was made at equal SPL; the difference was reduced, but not eliminated, when the comparison was made at equal SL. Gap thresholds for both the normal and impaired ears decreased as the center frequency increased from 0.5 to 2.0 kHz. For the sinusoidal markers, gap thresholds were often similar for the normal and impaired ears when tested at equal SPL, and were larger for the normal ears when tested at equal SL. Gap thresholds did not change systematically with frequency. Gap thresholds using sinusoidal markers were smaller than those using noise markers. In the second experiment, three subjects with single-channel cochlear implants were tested. Gap thresholds for noise bands tended to increase with increasing center frequency when the noise bandwidth was fixed, and to decrease with increasing bandwidth when the center frequency was fixed. Gap thresholds for sinusoids did not change with center frequency, but decreased markedly with increasing level. Gap thresholds for sinusoids were considerably smaller than those for noise bands.(ABSTRACT TRUNCATED AT 250 WORDS) |
| | |
Authors:
|
B C Moore; B R Glasberg |
Related Documents
:
|
3306304 - Envelope amplitude analysis following narrow-band filtering: a technique for ultrasonic... 12590914 - The effect of spectral manipulations on the identification of affective and linguistic ... 8201114 - Profile analysis and comodulation detection differences using narrow bands of noise and... 19640044 - Effects of envelope bandwidth on the intelligibility of sine- and noise-vocoded speech. 20364214 - Enhancing waveguided light extraction in organic leds using an ultra-low-index grid. 21897824 - Does area v3a predict positions of moving objects? |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: The Journal of the Acoustical Society of America Volume: 83 ISSN: 0001-4966 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 1988 Mar |
Date Detail:
|
Created Date: 1988-05-13 Completed Date: 1988-05-13 Revised Date: 2007-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 1093-101 Citation Subset: IM |
Affiliation:
|
Department of Experimental Psychology, University of Cambridge, England. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Acoustic Stimulation Aged Auditory Threshold* Bone Conduction Cochlear Implants Female Hearing Disorders / diagnosis* Hearing Tests Humans Male Meniere Disease / diagnosis Middle Aged Noise* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Masked cochlear whole-nerve response intensity functions altered by electrical stimulation of the cr...
Next Document: The shape of the ear's temporal window.