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Anticipatory Biasing of Visuospatial Attention in Deaf Native Signers.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Anticipatory Biasing of Visuospatial Attention in Deaf Native Signers./
Author:	DeAndrea-Lazarus, Ian Anthony.
Description:	1 online resource (343 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 84-08, Section: A.
Contained By:	Dissertations Abstracts International84-08A.
Subject:	Neurosciences. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30241789click for full text (PQDT)
ISBN:	9798374406313

Anticipatory Biasing of Visuospatial Attention in Deaf Native Signers.
DeAndrea-Lazarus, Ian Anthony.

Anticipatory Biasing of Visuospatial Attention in Deaf Native Signers. - 1 online resource (343 pages)

Source: Dissertations Abstracts International, Volume: 84-08, Section: A.

Thesis (Ph.D.)--University of Rochester, 2023.

Includes bibliographical references

Deaf people show increased visuospatial attention abilities, especially towards peripheral inputs, but the neural mechanisms of these heightened abilities are not yet understood. In hearing individuals, there are electrophysiological correlates that represent distinct brain processes involved in the shifting, or biasing, of visuospatial attention in anticipation of the appearance of a stimulus in response to a directional cue. We attempted to determine whether the same processes are observed in deaf people and if any differences can explain the increase in visuospatial attention abilities. We also set out to settle a debate about whether lateralization of alpha-band anticipatory activity, which represents the inhibition of visual spatial processing irrelevant to the task, can be observed as early as age 7-12 in hearing children. High-density electroencephalography was recorded from 41 adult participants (21 deaf native signers and 20 hearing non-signers) and 20 hearing children performing a cued covert visuospatial attention task. Deaf participants responded significantly more rapidly and accurately, and electrophysiological patterns were observed that suggest that deaf people are capable of rapidly engaging attentional processes involved in orienting attention to the periphery, which may have contributed to the improved visuospatial performance that was observed. Topographic analysis showed a greater extent of alpha-band anticipatory activity over right parietal scalp, suggesting potential sequestration of extra-visual attentional circuits (i.e., unused auditory regions), and post-hoc analysis pointed to substantially earlier onset of this activity during the cue-target interval. Children also demonstrated some alpha lateralization, suggesting that inhibitory processes are present at this age range.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798374406313Subjects--Topical Terms:

588700
Neurosciences.
Subjects--Index Terms:

AttentionIndex Terms--Genre/Form:

542853
Electronic books.

Anticipatory Biasing of Visuospatial Attention in Deaf Native Signers.
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