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CIRCADIAN VARIATIONS IN THE AUDITORY...

MARSHALL, NOEL KATHLEEN.

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CIRCADIAN VARIATIONS IN THE AUDITORY BRAINSTEM RESPONSE AND ITS RELATIONSHIP TO ORAL TEMPERATURE.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	CIRCADIAN VARIATIONS IN THE AUDITORY BRAINSTEM RESPONSE AND ITS RELATIONSHIP TO ORAL TEMPERATURE./
作者:	MARSHALL, NOEL KATHLEEN.
面頁冊數:	148 p.
附註:	Source: Dissertation Abstracts International, Volume: 42-11, Section: B, page: 4611.
Contained By:	Dissertation Abstracts International42-11B.
標題:	Psychology, Physiological. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=8208426

CIRCADIAN VARIATIONS IN THE AUDITORY BRAINSTEM RESPONSE AND ITS RELATIONSHIP TO ORAL TEMPERATURE.
MARSHALL, NOEL KATHLEEN.

CIRCADIAN VARIATIONS IN THE AUDITORY BRAINSTEM RESPONSE AND ITS RELATIONSHIP TO ORAL TEMPERATURE. - 148 p.

Source: Dissertation Abstracts International, Volume: 42-11, Section: B, page: 4611.

Thesis (Ph.D.)--The University of Texas at Dallas, 1981.

The Auditory Brainstem Response (ABR) is a clinical tool routinely used by Audiologists and Neurologists in determining the integrity of the peripheral auditory apparatus. In this thesis I have investigated a possible source of variance in ABR recording procedure, namely, circadian variation in body temperature (see issue one). The results of experiment I revealed that the absolute latencies and interpeak latencies were highly negatively correlated with circadian changes in body temperature. Two additional experiments were conducted to study the temperature-ABR relationship. A series of frequency and rate manipulations were selected since both are known to affect ABR latency: decreasing the spectral content of the eliciting stimulus increases ABR latency (see issue two); decreasing the inter-stimulus interval also increases the latency of the ABR (see issue three). The strategy of these epxeriments was to ascertain whether the results of frequency and/or rate manipulations are systematically related to circadian temperature variations. The results of Experiment II indicate that circadian change in body temperature did not appear to interact with frequency of the eliciting stimulus; Experiment III revealed that a ten-fold increase in the rate of stimulus presentation produced the same latency shift regardless of temperature.Subjects--Topical Terms:

1017869
Psychology, Physiological.

CIRCADIAN VARIATIONS IN THE AUDITORY BRAINSTEM RESPONSE AND ITS RELATIONSHIP TO ORAL TEMPERATURE.
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245 1 0 $a CIRCADIAN VARIATIONS IN THE AUDITORY BRAINSTEM RESPONSE AND ITS RELATIONSHIP TO ORAL TEMPERATURE.
300 $a 148 p.
500 $a Source: Dissertation Abstracts International, Volume: 42-11, Section: B, page: 4611.
502 $a Thesis (Ph.D.)--The University of Texas at Dallas, 1981.
520 $a The Auditory Brainstem Response (ABR) is a clinical tool routinely used by Audiologists and Neurologists in determining the integrity of the peripheral auditory apparatus. In this thesis I have investigated a possible source of variance in ABR recording procedure, namely, circadian variation in body temperature (see issue one). The results of experiment I revealed that the absolute latencies and interpeak latencies were highly negatively correlated with circadian changes in body temperature. Two additional experiments were conducted to study the temperature-ABR relationship. A series of frequency and rate manipulations were selected since both are known to affect ABR latency: decreasing the spectral content of the eliciting stimulus increases ABR latency (see issue two); decreasing the inter-stimulus interval also increases the latency of the ABR (see issue three). The strategy of these epxeriments was to ascertain whether the results of frequency and/or rate manipulations are systematically related to circadian temperature variations. The results of Experiment II indicate that circadian change in body temperature did not appear to interact with frequency of the eliciting stimulus; Experiment III revealed that a ten-fold increase in the rate of stimulus presentation produced the same latency shift regardless of temperature.
520 $a The failure to observe either a temperature-frequency or temperature-rate interaction may be due to several reasons. It is possible that the response variability inherent in frequency and rate studies was greater than the temperature effect and thus indistinguishable or masked. It is also possible that the temperature range studied was too limited. It remains to be determined if a temperature-rate or temperature-frequency interaction would be observed following a more severe reduction in body temperature.
520 $a The results of Experiments I, II and III strongly imply that the interpretation of the ABR can be confounded if one ignores the temperature of the subject. The probability of a false positive interpretation of the ABR can be reduced if the results are corrected for temperature. It is important that clinicians and researchers include temperature controls in experimental and clinical analyses of the auditory brainstem response.
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