Effect of stimulus sweep direction on distortion product otoacoustic emission fine structure

The purpose of this study was to examine the effect of stimulus sweep direction on the fine structure of the 2f1-f2 distortion product otoacoustic emission (DPOAE). It was hypothesised that the DPOAE fine structure could be shifted if the stimulus sweep changed from one direction to the other. In th...

Full description

Bibliographic Details
Main Authors:	Marniza Omar, Kapadia S., Lutman M.E
Format:	Article
Language:	English
Published:	penerbit ukm 2004
Online Access:	http://journalarticle.ukm.my/965/ http://journalarticle.ukm.my/965/ http://journalarticle.ukm.my/965/1/jurnal20.pdf

id	ukm-965
recordtype	eprints
spelling	ukm-9652016-12-14T06:28:26Z http://journalarticle.ukm.my/965/ Effect of stimulus sweep direction on distortion product otoacoustic emission fine structure Marniza Omar, Kapadia S., Lutman M.E, The purpose of this study was to examine the effect of stimulus sweep direction on the fine structure of the 2f1-f2 distortion product otoacoustic emission (DPOAE). It was hypothesised that the DPOAE fine structure could be shifted if the stimulus sweep changed from one direction to the other. In the present study, ascending, descending and random frequency sweeps were used, with f2 frequency varying between 992 Hz and 2496 Hz and f2/f1 fixed at 1.22. DPOAE fine structure was recorded at 16 Hz intervals. Screening, spontaneous otoacoustic emission (SOAE) and DPOAE measurements were carried out on 19 ears of 19 subjects aged between 22 and 30 years. Data from 14 ears that had at least one significant peak or valley in their DPOAE fine structure were included in the main analysis. Of these, five ears showed at least one occurrence of SOAE over the frequency span 600 Hz to 2500 Hz. Data for ears with and without SOAEs were grouped and analysed separately. The results showed no effect of sweep direction on DPOAE fine structure. No significant differences were observed in peak or valley frequencies, peak height or valley depth between the three stimulus sweep conditions (p > 0.05). There was also no significant effect of stimulus sweep direction on DPOAE level at the point at which SOAE frequency equalled DPOAE frequency (p > 0.05). In conclusion, the study found no effect of stimulus sweep direction on the fine structure of the 2f1-f2 DPOAE, either in ears with or without SOAEs.Therefore, future measurements of this fine structure may use either sweep direction. penerbit ukm 2004 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/965/1/jurnal20.pdf Marniza Omar, and Kapadia S., and Lutman M.E, (2004) Effect of stimulus sweep direction on distortion product otoacoustic emission fine structure. Jurnal Sains Kesihatan Malaysia, 2 (2). pp. 13-26. ISSN 1675-8161 http://www.fskb.ukm.my/fskbold/jurnal
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	The purpose of this study was to examine the effect of stimulus sweep direction on the fine structure of the 2f1-f2 distortion product otoacoustic emission (DPOAE). It was hypothesised that the DPOAE fine structure could be shifted if the stimulus sweep changed from one direction to the other. In the present study, ascending, descending and random frequency sweeps were used, with f2 frequency varying between 992 Hz and 2496 Hz and f2/f1 fixed at 1.22. DPOAE fine structure was recorded at 16 Hz intervals. Screening, spontaneous otoacoustic emission (SOAE) and DPOAE measurements were carried out on 19 ears of 19 subjects aged between 22 and 30 years. Data from 14 ears that had at least one significant peak or valley in their DPOAE fine structure were included in the main analysis. Of these, five ears showed at least one occurrence of SOAE over the frequency span 600 Hz to 2500 Hz. Data for ears with and without SOAEs were grouped and analysed separately. The results showed no effect of sweep direction on DPOAE fine structure. No significant differences were observed in peak or valley frequencies, peak height or valley depth between the three stimulus sweep conditions (p > 0.05). There was also no significant effect of stimulus sweep direction on DPOAE level at the point at which SOAE frequency equalled DPOAE frequency (p > 0.05). In conclusion, the study found no effect of stimulus sweep direction on the fine structure of the 2f1-f2 DPOAE, either in ears with or without SOAEs.Therefore, future measurements of this fine structure may use either sweep direction.
format	Article
author	Marniza Omar, Kapadia S., Lutman M.E,
spellingShingle	Marniza Omar, Kapadia S., Lutman M.E, Effect of stimulus sweep direction on distortion product otoacoustic emission fine structure
author_facet	Marniza Omar, Kapadia S., Lutman M.E,
author_sort	Marniza Omar,
title	Effect of stimulus sweep direction on distortion product otoacoustic emission fine structure
title_short	Effect of stimulus sweep direction on distortion product otoacoustic emission fine structure
title_full	Effect of stimulus sweep direction on distortion product otoacoustic emission fine structure
title_fullStr	Effect of stimulus sweep direction on distortion product otoacoustic emission fine structure
title_full_unstemmed	Effect of stimulus sweep direction on distortion product otoacoustic emission fine structure
title_sort	effect of stimulus sweep direction on distortion product otoacoustic emission fine structure
publisher	penerbit ukm
publishDate	2004
url	http://journalarticle.ukm.my/965/ http://journalarticle.ukm.my/965/ http://journalarticle.ukm.my/965/1/jurnal20.pdf
first_indexed	2023-09-18T19:32:01Z
last_indexed	2023-09-18T19:32:01Z
_version_	1777405024139214848

Effect of stimulus sweep direction on distortion product otoacoustic emission fine structure

Similar Items