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Speech-evoked auditory potentials in...

Friesen, Lendra M.

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Speech-evoked auditory potentials in cochlear implant listeners.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Speech-evoked auditory potentials in cochlear implant listeners./
作者:	Friesen, Lendra M.
面頁冊數:	65 p.
附註:	Adviser: Kelly L. Tremblay.
Contained By:	Dissertation Abstracts International68-02B.
標題:	Health Sciences, Audiology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3252857

Speech-evoked auditory potentials in cochlear implant listeners.
Friesen, Lendra M.

Speech-evoked auditory potentials in cochlear implant listeners. - 65 p.

Adviser: Kelly L. Tremblay.

Thesis (Ph.D.)--University of Washington, 2007.

The purpose of this study was to examine the effect of cochlear implant (CI) channel number on the neural representation of acoustic changes contained in speech. Eleven normal hearing monolingual English speaking adults were tested. Unprocessed naturally spoken syllables, containing medial vowels, as well as processed versions (simulating 2, 4, 8, 12, and 16 implant channels) were used for behavioral and electrophysiological testing. Behavioral results. Similar to our previously published findings, perception improved as a function of channel number (Friesen et al. 2001); however, the effect of channel number was not the same for all stimulus tokens. The perception of 'heed' far example was remarkably better than the perception of 'hid' with only 2 channels of information. Physiological results. Neural response patterns differed as a function of channel number. Evoked neural activity, in response to the acoustic changes contained in the speech signal, increased in amplitude and decreased in latency as the number of channels increased.Subjects--Topical Terms:

1018138
Health Sciences, Audiology.

Speech-evoked auditory potentials in cochlear implant listeners.
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245 1 0 $a Speech-evoked auditory potentials in cochlear implant listeners.
300 $a 65 p.
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500 $a Source: Dissertation Abstracts International, Volume: 68-02, Section: B, page: 0868.
502 $a Thesis (Ph.D.)--University of Washington, 2007.
520 $a The purpose of this study was to examine the effect of cochlear implant (CI) channel number on the neural representation of acoustic changes contained in speech. Eleven normal hearing monolingual English speaking adults were tested. Unprocessed naturally spoken syllables, containing medial vowels, as well as processed versions (simulating 2, 4, 8, 12, and 16 implant channels) were used for behavioral and electrophysiological testing. Behavioral results. Similar to our previously published findings, perception improved as a function of channel number (Friesen et al. 2001); however, the effect of channel number was not the same for all stimulus tokens. The perception of 'heed' far example was remarkably better than the perception of 'hid' with only 2 channels of information. Physiological results. Neural response patterns differed as a function of channel number. Evoked neural activity, in response to the acoustic changes contained in the speech signal, increased in amplitude and decreased in latency as the number of channels increased.
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