國立虎尾科技大學 |

The Effects of Age on the Perception of Frequency in Noise.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	The Effects of Age on the Perception of Frequency in Noise./
作者:	Scherer, Mary Ellen.
面頁冊數:	1 online resource (33 pages)
附註:	Source: Dissertation Abstracts International, Volume: 78-10(E), Section: B.
Contained By:	Dissertation Abstracts International78-10B(E).
標題:	Audiology. -
電子資源:	click for full text (PQDT)
ISBN:	9781369787702

The Effects of Age on the Perception of Frequency in Noise.
Scherer, Mary Ellen.

The Effects of Age on the Perception of Frequency in Noise. - 1 online resource (33 pages)

Source: Dissertation Abstracts International, Volume: 78-10(E), Section: B.

Thesis (Au.D.)

Includes bibliographical references

Difficulty understanding speech in the presence of background noise is one of the most common complaints of older adults, both with and without hearing loss. One possible contributing factor is an age-related decline in neural synchrony (e.g., phase locking). Tones-in-noise were used in an attempt to disrupt rate-place coding of frequency and to encourage participants to use phase-locked, temporal representations of frequency during a behavioral frequency discrimination task. Fourteen adults participated in the study (five younger, aged 21--29; four middle aged, 41--50; and five older, aged 61--80). Participants had clinically normal hearing sensitivity (≤ 25 dB HL at octave frequencies 250--8000 Hz). Tone-in-noise detection thresholds and frequency discrimination limens (FDLs) were obtained at 500 and 1000 Hz, separately. FDLs were tested in quiet and noise conditions. The Words-in-Noise test was used to assess speech-in-noise understanding. Results indicated that tone-in-noise detection thresholds were not significantly different across age groups. Frequency discrimination limens were significantly poorer (larger) in the presence of noise; however, no significant age effects were found. Frequency discrimination results indicated that the presence of noise worsened FDLs, consistent with the effect expected with reduced neural coding strategies available in noise. Speech-in-noise understanding was not significantly different across age groups. It is believed that the presence of noise may reduce the effectiveness of some neural coding strategies available to listeners.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9781369787702Subjects--Topical Terms:

889171
Audiology.
Index Terms--Genre/Form:

554714
Electronic books.

The Effects of Age on the Perception of Frequency in Noise.
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500 $a Source: Dissertation Abstracts International, Volume: 78-10(E), Section: B.
500 $a Adviser: Christopher G. Clinard.
502 $a Thesis (Au.D.) $c James Madison University $d 2017.
504 $a Includes bibliographical references
520 $a Difficulty understanding speech in the presence of background noise is one of the most common complaints of older adults, both with and without hearing loss. One possible contributing factor is an age-related decline in neural synchrony (e.g., phase locking). Tones-in-noise were used in an attempt to disrupt rate-place coding of frequency and to encourage participants to use phase-locked, temporal representations of frequency during a behavioral frequency discrimination task. Fourteen adults participated in the study (five younger, aged 21--29; four middle aged, 41--50; and five older, aged 61--80). Participants had clinically normal hearing sensitivity (≤ 25 dB HL at octave frequencies 250--8000 Hz). Tone-in-noise detection thresholds and frequency discrimination limens (FDLs) were obtained at 500 and 1000 Hz, separately. FDLs were tested in quiet and noise conditions. The Words-in-Noise test was used to assess speech-in-noise understanding. Results indicated that tone-in-noise detection thresholds were not significantly different across age groups. Frequency discrimination limens were significantly poorer (larger) in the presence of noise; however, no significant age effects were found. Frequency discrimination results indicated that the presence of noise worsened FDLs, consistent with the effect expected with reduced neural coding strategies available in noise. Speech-in-noise understanding was not significantly different across age groups. It is believed that the presence of noise may reduce the effectiveness of some neural coding strategies available to listeners.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
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655 7 $a Electronic books. $2 local $3 554714
690 $a 0300
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a James Madison University. $b Communication Sciences and Disorders. $3 1181282
773 0 $t Dissertation Abstracts International $g 78-10B(E).
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