Behavioral and Brain Measures of Phasic Alerting Effects on Visual Attention
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Behavioral and Brain Measures of Phasic Alerting Effects on Visual Attention. / Wiegand, Iris Michaela; Petersen, Anders; Finke, Kathrin; Bundesen, Claus; Lansner, Jon; Habekost, Thomas.
In: Frontiers in Human Neuroscience, Vol. 11, 176, 2017, p. 1-11.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Behavioral and Brain Measures of Phasic Alerting Effects on Visual Attention
AU - Wiegand, Iris Michaela
AU - Petersen, Anders
AU - Finke, Kathrin
AU - Bundesen, Claus
AU - Lansner, Jon
AU - Habekost, Thomas
PY - 2017
Y1 - 2017
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.
KW - Faculty of Social Sciences
KW - phasic alertness
KW - visual attention
KW - computational modeling
KW - event-related potentials
KW - event-related lateralizations
KW - arousal
KW - warning cue
U2 - 10.3389/fnhum.2017.00176
DO - 10.3389/fnhum.2017.00176
M3 - Journal article
C2 - 28443009
VL - 11
SP - 1
EP - 11
JO - Frontiers in Human Neuroscience
JF - Frontiers in Human Neuroscience
SN - 1662-5161
M1 - 176
ER -
ID: 181451425