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Conference Paper: Selective attention modulates motion speed learning by suppressing visible irrelevant stimuli

TitleSelective attention modulates motion speed learning by suppressing visible irrelevant stimuli
Authors
Issue Date2009
PublisherPion Ltd.. The Journal's web site is located at http://www.perceptionweb.com
Citation
The 32nd European Conference on Visual Perception, Regensburg, Germany, 24-28 August 2009. In Perception, v. 38, abstract suppl., p. 138 How to Cite?
AbstractSelective attention modulates perceptual learning in motion speed, but previous studies were unable to answer whether selective attention modulates learning by enhancing the attended signal, suppressing the ignored signal, or a combination of the two. We investigated this question by separating the attended/ignored signals in two disparity-defined depths. The learning stimuli contain speed change in one specific direction (target direction) at one specific depth plane (target depth), with another depth plane (non-target depth) containing either nothing (control group), or distractor dots moving in random direction random-direction group) or orthogonal to target direction (orthogonal-direction group). Observers' 80%-correct motion coherence detection thresholds at two depth planes were measured before and after six hourly sessions of speed discrimination. After learning, observers' motion sensitivity increased by an average 23% at target depth plane at all tested directions in all three conditions, as well as at the non-target depth plane when no distractors were present (control condition) (21%). At conditions where clearly visible moving distractors in either non-specific (random) or specific (orthogonal) direction, there is a clear disadvantage at the distractor direction(s) (6%, 0%). Our results strongly suggest that selective attention modulates motion speed learning largely by suppressing visible irrelevant stimuli.
Persistent Identifierhttp://hdl.handle.net/10722/132202
ISSN
2015 Impact Factor: 0.917
2015 SCImago Journal Rankings: 0.518

 

DC FieldValueLanguage
dc.contributor.authorWang, SWen_US
dc.contributor.authorTseng, CHen_US
dc.date.accessioned2011-03-21T09:01:34Z-
dc.date.available2011-03-21T09:01:34Z-
dc.date.issued2009en_US
dc.identifier.citationThe 32nd European Conference on Visual Perception, Regensburg, Germany, 24-28 August 2009. In Perception, v. 38, abstract suppl., p. 138en_US
dc.identifier.issn0301-0066-
dc.identifier.urihttp://hdl.handle.net/10722/132202-
dc.description.abstractSelective attention modulates perceptual learning in motion speed, but previous studies were unable to answer whether selective attention modulates learning by enhancing the attended signal, suppressing the ignored signal, or a combination of the two. We investigated this question by separating the attended/ignored signals in two disparity-defined depths. The learning stimuli contain speed change in one specific direction (target direction) at one specific depth plane (target depth), with another depth plane (non-target depth) containing either nothing (control group), or distractor dots moving in random direction random-direction group) or orthogonal to target direction (orthogonal-direction group). Observers' 80%-correct motion coherence detection thresholds at two depth planes were measured before and after six hourly sessions of speed discrimination. After learning, observers' motion sensitivity increased by an average 23% at target depth plane at all tested directions in all three conditions, as well as at the non-target depth plane when no distractors were present (control condition) (21%). At conditions where clearly visible moving distractors in either non-specific (random) or specific (orthogonal) direction, there is a clear disadvantage at the distractor direction(s) (6%, 0%). Our results strongly suggest that selective attention modulates motion speed learning largely by suppressing visible irrelevant stimuli.-
dc.languageengen_US
dc.publisherPion Ltd.. The Journal's web site is located at http://www.perceptionweb.com-
dc.relation.ispartofPerceptionen_US
dc.titleSelective attention modulates motion speed learning by suppressing visible irrelevant stimulien_US
dc.typeConference_Paperen_US
dc.identifier.emailWang, SW: SWWang@gmail.comen_US
dc.identifier.emailTseng, CH: tseng@hku.hk-
dc.identifier.authorityTseng, CH=rp00640en_US
dc.identifier.hkuros177437en_US
dc.identifier.volume38, abstract suppl.-
dc.identifier.spage138-
dc.identifier.epage138-
dc.publisher.placeUnited Kingdom-
dc.description.otherThe 32nd European Conference on Visual Perception, Regensburg, Germany, 24-28 August 2009. In Perception, v. 38, abstract suppl., p. 138-

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