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Behavioral Outcomes of Asymmetric Hearing Loss.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Behavioral Outcomes of Asymmetric Hearing Loss./
Author:	Nofziger, Jill Earlene.
Description:	1 online resource (37 pages)
Notes:	Source: Masters Abstracts International, Volume: 84-12.
Contained By:	Masters Abstracts International84-12.
Subject:	Neurosciences. -
Online resource:	click for full text (PQDT)
ISBN:	9798379686567

Behavioral Outcomes of Asymmetric Hearing Loss.
Nofziger, Jill Earlene.

Behavioral Outcomes of Asymmetric Hearing Loss. - 1 online resource (37 pages)

Source: Masters Abstracts International, Volume: 84-12.

Thesis (M.S.)--Wake Forest University, 2023.

Includes bibliographical references

The brain integrates stimuli from multiple modalities to improve detection and localization of environmental events. This integration produces the greatest enhancements when the unisensory inputs being integrated are weak, and congruent across space and time. This study investigates multisensory detection/localization behaviors in an animal (cat) model of acute asymmetric hearing loss (ASHL). ASHL is known to disrupt the spatial alignment of auditory cues in the superior colliculus, a structure associated with multisensory integration. Cats were trained to approach brief auditory and visual unimodal stimuli. They were then tested with a battery of visual and auditory stimuli presented alone or together in spatiotemporal congruence at either full or reduced intensities. As expected, enhancements were greatest with the combination of reduced intensity stimuli. ASHL was simulated using a fitted earmuff covering one ear while auditory stimuli were played at full intensity. This impaired auditory localization performance to levels similar to that in response to the reduced intensity auditory cue. However, when paired with reduced intensity spatiotemporally congruent visual stimuli, multisensory integration was impaired. These results emphasize that coincidence from a logical perspective is not equivalent to coincidence of neuronal inputs, and understanding the underlying circuitry, not simply the unimodal responses, is crucial for predicting the product of the multisensory transform.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798379686567Subjects--Topical Terms:

593561
Neurosciences.
Subjects--Index Terms:

Multisensory integrationIndex Terms--Genre/Form:

554714
Electronic books.

Behavioral Outcomes of Asymmetric Hearing Loss.
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500 $a Advisor: Stein, Barry E.;Rowland, Benjamin A.
502 $a Thesis (M.S.)--Wake Forest University, 2023.
504 $a Includes bibliographical references
520 $a The brain integrates stimuli from multiple modalities to improve detection and localization of environmental events. This integration produces the greatest enhancements when the unisensory inputs being integrated are weak, and congruent across space and time. This study investigates multisensory detection/localization behaviors in an animal (cat) model of acute asymmetric hearing loss (ASHL). ASHL is known to disrupt the spatial alignment of auditory cues in the superior colliculus, a structure associated with multisensory integration. Cats were trained to approach brief auditory and visual unimodal stimuli. They were then tested with a battery of visual and auditory stimuli presented alone or together in spatiotemporal congruence at either full or reduced intensities. As expected, enhancements were greatest with the combination of reduced intensity stimuli. ASHL was simulated using a fitted earmuff covering one ear while auditory stimuli were played at full intensity. This impaired auditory localization performance to levels similar to that in response to the reduced intensity auditory cue. However, when paired with reduced intensity spatiotemporally congruent visual stimuli, multisensory integration was impaired. These results emphasize that coincidence from a logical perspective is not equivalent to coincidence of neuronal inputs, and understanding the underlying circuitry, not simply the unimodal responses, is crucial for predicting the product of the multisensory transform.
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538 $a Mode of access: World Wide Web
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653 $a Acute asymmetric hearing loss
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