Behavioral and Brain Measures of Phasic Alerting Effects on Visual Attention

Iris Michaela Wiegand; Anders Petersen; Kathrin Finke; Claus Bundesen; Jon Lansner; Thomas Habekost

doi:10.3389/fnhum.2017.00176

Behavioral and Brain Measures of Phasic Alerting Effects on Visual Attention

Iris Michaela Wiegand, Anders Petersen, Kathrin Finke, Claus Bundesen, Jon Lansner, Thomas Habekost

14 Citationer (Scopus)

Abstract

In the present study, we investigated effects of phasic alerting on visual attention in a partial report task, in which half of the displays were preceded by an auditory warning cue. Based on the computational Theory of Visual Attention (TVA), we estimated parameters of spatial and non-spatial aspects of visual attention and measured event-related lateralizations (ERLs) over visual processing areas. We found that the TVA parameter sensory effectiveness a, which is thought to reflect visual processing capacity, significantly increased with phasic alerting. By contrast, the distribution of visual processing resources according to task relevance and spatial position, as quantified in parameters top-down control α and spatial bias windex, was not modulated by phasic alerting. On the electrophysiological level, the latencies of ERLs in response to the task displays were reduced following the warning cue. These results suggest that phasic alerting facilitates visual processing in a general, unselective manner and that this effect originates in early stages of visual information processing.

Originalsprog	Engelsk
Artikelnummer	176
Tidsskrift	Frontiers in Human Neuroscience
Vol/bind	11
Sider (fra-til)	1-11
ISSN	1662-5161
DOI	https://doi.org/10.3389/fnhum.2017.00176
Status	Udgivet - 10 apr. 2017

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10.3389/fnhum.2017.00176

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5385325/pdf/fnhum-11-00176.pdfLicens: CC BY

Citationsformater

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abstract = "In the present study, we investigated effects of phasic alerting on visual attention in a partial report task, in which half of the displays were preceded by an auditory warning cue. Based on the computational Theory of Visual Attention (TVA), we estimated parameters of spatial and non-spatial aspects of visual attention and measured event-related lateralizations (ERLs) over visual processing areas. We found that the TVA parameter sensory effectiveness a, which is thought to reflect visual processing capacity, significantly increased with phasic alerting. By contrast, the distribution of visual processing resources according to task relevance and spatial position, as quantified in parameters top-down control α and spatial bias windex, was not modulated by phasic alerting. On the electrophysiological level, the latencies of ERLs in response to the task displays were reduced following the warning cue. These results suggest that phasic alerting facilitates visual processing in a general, unselective manner and that this effect originates in early stages of visual information processing.",

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AU - Wiegand, Iris Michaela

AU - Petersen, Anders

AU - Finke, Kathrin

AU - Bundesen, Claus

AU - Lansner, Jon

AU - Habekost, Thomas

PY - 2017/4/10

Y1 - 2017/4/10

N2 - In the present study, we investigated effects of phasic alerting on visual attention in a partial report task, in which half of the displays were preceded by an auditory warning cue. Based on the computational Theory of Visual Attention (TVA), we estimated parameters of spatial and non-spatial aspects of visual attention and measured event-related lateralizations (ERLs) over visual processing areas. We found that the TVA parameter sensory effectiveness a, which is thought to reflect visual processing capacity, significantly increased with phasic alerting. By contrast, the distribution of visual processing resources according to task relevance and spatial position, as quantified in parameters top-down control α and spatial bias windex, was not modulated by phasic alerting. On the electrophysiological level, the latencies of ERLs in response to the task displays were reduced following the warning cue. These results suggest that phasic alerting facilitates visual processing in a general, unselective manner and that this effect originates in early stages of visual information processing.

AB - In the present study, we investigated effects of phasic alerting on visual attention in a partial report task, in which half of the displays were preceded by an auditory warning cue. Based on the computational Theory of Visual Attention (TVA), we estimated parameters of spatial and non-spatial aspects of visual attention and measured event-related lateralizations (ERLs) over visual processing areas. We found that the TVA parameter sensory effectiveness a, which is thought to reflect visual processing capacity, significantly increased with phasic alerting. By contrast, the distribution of visual processing resources according to task relevance and spatial position, as quantified in parameters top-down control α and spatial bias windex, was not modulated by phasic alerting. On the electrophysiological level, the latencies of ERLs in response to the task displays were reduced following the warning cue. These results suggest that phasic alerting facilitates visual processing in a general, unselective manner and that this effect originates in early stages of visual information processing.

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KW - computational modeling

KW - event-related potentials

KW - event-related lateralizations

KW - arousal

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ER -

Behavioral and Brain Measures of Phasic Alerting Effects on Visual Attention

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