Phasic alerting increases visual attention capacity in younger but not in older individuals
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Phasic alerting increases visual attention capacity in younger but not in older individuals. / Wiegand, Iris Michaela; Petersen, Anders; Bundesen, Claus; Habekost, Thomas.
In: Visual Cognition, Vol. 25, No. 1-3, 2017, p. 343-357.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Phasic alerting increases visual attention capacity in younger but not in older individuals
AU - Wiegand, Iris Michaela
AU - Petersen, Anders
AU - Bundesen, Claus
AU - Habekost, Thomas
PY - 2017
Y1 - 2017
N2 - In the present study, we investigated effects of phasic alerting on visual attention in younger and older adults. We modelled parameters of visual attention based on the computational Theory of Visual Attention (TVA) and measured event-related lateralizations (ERLs) in a partial report task, in which half of the displays were preceded by an auditory warning cue. Younger adults showed an alertness-related visual processing facilitation: TVA parameter sensory effectiveness a, a measure of visual processing capacity, was significantly increased, and latencies of visual ERLs were significantly reduced following the warning cue. By contrast, older adults did not benefit from the alerting cue: TVA parameter sensory effectiveness a and ERL latencies did not differ between conditions with and without cues. The findings indicate age-related changes in the brain network underlying alertness and attention, which governs the responsiveness to external cues and is critical for general cognitive functioning in aging.
AB - In the present study, we investigated effects of phasic alerting on visual attention in younger and older adults. We modelled parameters of visual attention based on the computational Theory of Visual Attention (TVA) and measured event-related lateralizations (ERLs) in a partial report task, in which half of the displays were preceded by an auditory warning cue. Younger adults showed an alertness-related visual processing facilitation: TVA parameter sensory effectiveness a, a measure of visual processing capacity, was significantly increased, and latencies of visual ERLs were significantly reduced following the warning cue. By contrast, older adults did not benefit from the alerting cue: TVA parameter sensory effectiveness a and ERL latencies did not differ between conditions with and without cues. The findings indicate age-related changes in the brain network underlying alertness and attention, which governs the responsiveness to external cues and is critical for general cognitive functioning in aging.
KW - Faculty of Social Sciences
KW - Cognitive aging
KW - arousal
KW - visual attention
KW - event-related potentials
KW - warning cue
KW - noradrenaline
U2 - 10.1080/13506285.2017.1330791
DO - 10.1080/13506285.2017.1330791
M3 - Journal article
VL - 25
SP - 343
EP - 357
JO - Visual Cognition
JF - Visual Cognition
SN - 1350-6285
IS - 1-3
ER -
ID: 181481584