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Conference Paper: Distinct visual thresholds for egocentric and allocentric information pick up?

TitleDistinct visual thresholds for egocentric and allocentric information pick up?
Authors
Issue Date2011
PublisherPion Ltd.. The Journal's web site is located at http://i-perception.perceptionweb.com/journal/I/
Citation
The 7th Asia-Pacific Conference on Vision (APCV 2011), Hong Kong, 15-18 July 2011. In i-Perception, 2011, v. 2 n. 4, p. 214 How to Cite?
AbstractUnlike perceptual size judgments, actions—but not delayed actions—performed under full vision are relatively unaffected by the Müller-Lyer illusion. Controversy remains as to the source of these effects. We aimed to illuminate the problem by exploiting the possibility that vision for action and perception may have distinct thresholds. In Experiment 1 participants performed delayed pointing movements towards briefly presented (12 ms–masked) M-L targets of different sizes. While participants were unable to perceptually discriminate between targets, their movements were nevertheless a function of target size, but not of the illusion (de Wit, van der Kamp, & Masters, in press). This implies 1) that vision for action is functional even after a delay and/or 2) that distinct thresholds exists for egocentric and allocentric information pick up, possibly irrespective of whether a task is perceptual or motoric in nature. Experiment 2, in which participants manually matched the size of perceptually indiscriminable M-L targets, supports the latter option. These findings are reviewed in relation to recent discussions of the two-visual-systems model. de Wit, M.M., van der Kamp, J., & Masters, R.S.W. (in press). Delayed pointing movements to masked Müller-Lyer figures are affected by target size but not the illusion. Neuropsychologia.
Description2011 亞太視覺會議
Talk: Action and virtual environments
Open Access Journal
Persistent Identifierhttp://hdl.handle.net/10722/166281
ISSN

 

DC FieldValueLanguage
dc.contributor.authorDe Wit, Men_US
dc.contributor.authorvan der Kamp, Jen_US
dc.contributor.authorMasters, Ren_US
dc.date.accessioned2012-09-20T08:31:18Z-
dc.date.available2012-09-20T08:31:18Z-
dc.date.issued2011en_US
dc.identifier.citationThe 7th Asia-Pacific Conference on Vision (APCV 2011), Hong Kong, 15-18 July 2011. In i-Perception, 2011, v. 2 n. 4, p. 214en_US
dc.identifier.issn2041-6695-(electronic)-
dc.identifier.urihttp://hdl.handle.net/10722/166281-
dc.description2011 亞太視覺會議-
dc.descriptionTalk: Action and virtual environments-
dc.descriptionOpen Access Journal-
dc.description.abstractUnlike perceptual size judgments, actions—but not delayed actions—performed under full vision are relatively unaffected by the Müller-Lyer illusion. Controversy remains as to the source of these effects. We aimed to illuminate the problem by exploiting the possibility that vision for action and perception may have distinct thresholds. In Experiment 1 participants performed delayed pointing movements towards briefly presented (12 ms–masked) M-L targets of different sizes. While participants were unable to perceptually discriminate between targets, their movements were nevertheless a function of target size, but not of the illusion (de Wit, van der Kamp, & Masters, in press). This implies 1) that vision for action is functional even after a delay and/or 2) that distinct thresholds exists for egocentric and allocentric information pick up, possibly irrespective of whether a task is perceptual or motoric in nature. Experiment 2, in which participants manually matched the size of perceptually indiscriminable M-L targets, supports the latter option. These findings are reviewed in relation to recent discussions of the two-visual-systems model. de Wit, M.M., van der Kamp, J., & Masters, R.S.W. (in press). Delayed pointing movements to masked Müller-Lyer figures are affected by target size but not the illusion. Neuropsychologia.-
dc.languageengen_US
dc.publisherPion Ltd.. The Journal's web site is located at http://i-perception.perceptionweb.com/journal/I/-
dc.relation.ispartofi-Perceptionen_US
dc.titleDistinct visual thresholds for egocentric and allocentric information pick up?en_US
dc.typeConference_Paperen_US
dc.identifier.emailDe Wit, M: dewitm@hku.hken_US
dc.identifier.emailvan der Kamp, J: jvdkamp@hkucc.hku.hken_US
dc.identifier.emailMasters, R: mastersr@hku.hk-
dc.identifier.authorityMasters, R=rp00935en_US
dc.description.naturelink_to_OA_fulltext-
dc.identifier.hkuros208012en_US
dc.identifier.volume2en_US
dc.identifier.issue4-
dc.identifier.spage214en_US
dc.identifier.epage214en_US
dc.publisher.placeUnited Kingdom-
dc.description.otherThe 7th Asia-Pacific Conference on Vision (APCV 2011), Hong Kong, 15-18 July 2011. In i-Perception, 2011, v. 2 n. 4, p. 214-

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