Effects of spatial and selective attention on basic multisensory integration
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Effects of spatial and selective attention on basic multisensory integration. / Gondan, Matthias; Blurton, Steven Paul; Hughes, F.; Greenlee, M.W.
In: Journal of Experimental Psychology: Human Perception and Performance, Vol. 37, No. 6, 12.2011, p. 1887-1897.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Effects of spatial and selective attention on basic multisensory integration
AU - Gondan, Matthias
AU - Blurton, Steven Paul
AU - Hughes, F.
AU - Greenlee, M.W.
PY - 2011/12
Y1 - 2011/12
N2 - When participants respond to auditory and visual stimuli, responses to audiovisual stimuli are substantially faster than to unimodal stimuli (redundant signals effect, RSE). In such tasks, the RSE is usually higher than probability summation predicts, suggestive of specific integration mechanisms underlying the RSE. We investigated the role of spatial and selective attention on the RSE in audiovisual redundant signals tasks. In Experiment 1, stimuli were presented either centrally (narrow attentional focus) or at 1 of 3 unpredictable locations (wide focus). The RSE was accurately described by a coactivation model assuming linear superposition of modality-specific activation. Effects of spatial attention were explained by a shift of the evidence criterion. In Experiment 2, stimuli were presented at 3 locations; participants had to respond either to all signals regardless of location (simple response task) or to central stimuli only (selective attention task). The RSE was consistent with task-specific coactivation models; accumulation of evidence, however, differed between the 2 tasks.
AB - When participants respond to auditory and visual stimuli, responses to audiovisual stimuli are substantially faster than to unimodal stimuli (redundant signals effect, RSE). In such tasks, the RSE is usually higher than probability summation predicts, suggestive of specific integration mechanisms underlying the RSE. We investigated the role of spatial and selective attention on the RSE in audiovisual redundant signals tasks. In Experiment 1, stimuli were presented either centrally (narrow attentional focus) or at 1 of 3 unpredictable locations (wide focus). The RSE was accurately described by a coactivation model assuming linear superposition of modality-specific activation. Effects of spatial attention were explained by a shift of the evidence criterion. In Experiment 2, stimuli were presented at 3 locations; participants had to respond either to all signals regardless of location (simple response task) or to central stimuli only (selective attention task). The RSE was consistent with task-specific coactivation models; accumulation of evidence, however, differed between the 2 tasks.
KW - Acoustic Stimulation
KW - Attention
KW - Auditory Perception
KW - Female
KW - Humans
KW - Male
KW - Models, Psychological
KW - Photic Stimulation
KW - Reaction Time
KW - Space Perception
KW - Young Adult
UR - http://www.scopus.com/inward/record.url?scp=83055176939&partnerID=8YFLogxK
U2 - 10.1037/a0025635
DO - 10.1037/a0025635
M3 - Journal article
C2 - 21967270
VL - 37
SP - 1887
EP - 1897
JO - Journal of Experimental Psychology: Human Perception and Performance
JF - Journal of Experimental Psychology: Human Perception and Performance
SN - 0096-1523
IS - 6
ER -
ID: 48907666