THE EFFECTS OF AUDITORY SELECTIVE ATTENTION ON CONTRALATERAL SUPPRESSION OF STIMULUS-FREQUENCY OTOACOUSTIC EMISSIONS

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ROSTAMI SOHEILA; POURBAKHT AKRAM; KAMALI MOHAMMAD; JALAEE BAHRAM

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Journal: Auditory and Vestibular Research Journal Year:2011 | Volume:20 | Issue:2 (36) Page(s): 64-71

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Title

THE EFFECTS OF AUDITORY SELECTIVE ATTENTION ON CONTRALATERAL SUPPRESSION OF STIMULUS-FREQUENCY OTOACOUSTIC EMISSIONS

Author(s)

ROSTAMI SOHEILA | POURBAKHT AKRAM | KAMALI MOHAMMAD | JALAEE BAHRAM | Issue Writer Certificate

Keywords

CONTRALATERAL SUPPRESSION

STIMULUS-FREQUENCY OTOACOUSTIC EMISSIONS

AUDITORY SELECTIVE ATTENTION

AUDITORY EFFERENT PATHWAYS

AUDITORY CORTEX

TOP-DOWN PROCESSING

Abstract

Background and Aim: To date, the function of auditory efferent system remains unclear. There is evidence that medial olivocochlear bundle receives descending input from the cortex. In this study, the effect of AUDITORY SELECTIVE ATTENTION on STIMULUS-FREQUENCY OTOACOUSTIC EMISSIONS (SFOAE) was analyzed to investigate the modification of peripheral auditory system by AUDITORY CORTEX activity in frequency specific mode.Methods: Thirty-six normal hearing adult subjects with their age ranging from 18 to 30 years (mean age: 21.9 years) participated in this cross-sectional study. CONTRALATERAL SUPPRESSION of STIMULUS-FREQUENCY OTOACOUSTIC EMISSIONS was recorded in the right ear at 2 KHz. In order to eliminate the auditory attention, subjects were instructed to read a text. Besides, in order to evaluate the effect of auditory attention on CONTRALATERAL SUPPRESSION, subjects were instructed to detect target tones in background noise at 1000, 2000, and 4000 KHz.Results: A significant increase at contrabteral suppression of STIMULUS-FREQUENCY OTOACOUSTIC EMISSIONS was observed in AUDITORY SELECTIVE ATTENTION conditions (p£0.001).The largest magnitude of STIMULUS-FREQUENCY OTOACOUSTIC EMISSIONS suppression was seen at 2 KHz.Conclusion: The results of this study indicated that the activities of medial olivocochlear bundle enhanced by contralateral AUDITORY SELECTIVE ATTENTION increase the magnitude of STIMULUS-FREQUENCY OTOACOUSTIC EMISSIONS suppression. In fact, these results provided evidence for influence of AUDITORY CORTEX on the peripheral auditory system via corticofugal pathways in a frequency specific way.

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APA: Copy

ROSTAMI, SOHEILA, POURBAKHT, AKRAM, KAMALI, MOHAMMAD, & JALAEE, BAHRAM. (2011). THE EFFECTS OF AUDITORY SELECTIVE ATTENTION ON CONTRALATERAL SUPPRESSION OF STIMULUS-FREQUENCY OTOACOUSTIC EMISSIONS. AUDITORY AND VESTIBULAR RESEARCH, 20(2 (36)), 64-71. SID. https://sid.ir/paper/611643/en

Vancouver: Copy

ROSTAMI SOHEILA, POURBAKHT AKRAM, KAMALI MOHAMMAD, JALAEE BAHRAM. THE EFFECTS OF AUDITORY SELECTIVE ATTENTION ON CONTRALATERAL SUPPRESSION OF STIMULUS-FREQUENCY OTOACOUSTIC EMISSIONS. AUDITORY AND VESTIBULAR RESEARCH[Internet]. 2011;20(2 (36)):64-71. Available from: https://sid.ir/paper/611643/en

IEEE: Copy

SOHEILA ROSTAMI, AKRAM POURBAKHT, MOHAMMAD KAMALI, and BAHRAM JALAEE, “THE EFFECTS OF AUDITORY SELECTIVE ATTENTION ON CONTRALATERAL SUPPRESSION OF STIMULUS-FREQUENCY OTOACOUSTIC EMISSIONS,” AUDITORY AND VESTIBULAR RESEARCH, vol. 20, no. 2 (36), pp. 64–71, 2011, [Online]. Available: https://sid.ir/paper/611643/en

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