File Download
 
 
Supplementary

Conference Paper: Distinct visual thresholds for egocentric and allocentric information pick up?
  • Basic View
  • Metadata View
  • XML View
TitleDistinct visual thresholds for egocentric and allocentric information pick up?
 
AuthorsDe Wit, M
van der Kamp, J
Masters, R
 
Issue Date2011
 
PublisherPion Ltd.. The Journal's web site is located at http://i-perception.perceptionweb.com/journal/I/
 
CitationThe 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
 
ISSN2041-6695-(electronic)
 
DC FieldValue
dc.contributor.authorDe Wit, M
 
dc.contributor.authorvan der Kamp, J
 
dc.contributor.authorMasters, R
 
dc.date.accessioned2012-09-20T08:31:18Z
 
dc.date.available2012-09-20T08:31:18Z
 
dc.date.issued2011
 
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.description.naturelink_to_OA_fulltext
 
dc.description2011 亞太視覺會議
 
dc.descriptionTalk: Action and virtual environments
 
dc.descriptionOpen Access Journal
 
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
 
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. 214 [How to Cite?]
 
dc.identifier.epage214
 
dc.identifier.hkuros208012
 
dc.identifier.issn2041-6695-(electronic)
 
dc.identifier.issue4
 
dc.identifier.spage214
 
dc.identifier.urihttp://hdl.handle.net/10722/166281
 
dc.identifier.volume2
 
dc.languageeng
 
dc.publisherPion Ltd.. The Journal's web site is located at http://i-perception.perceptionweb.com/journal/I/
 
dc.publisher.placeUnited Kingdom
 
dc.relation.ispartofi-Perception
 
dc.titleDistinct visual thresholds for egocentric and allocentric information pick up?
 
dc.typeConference_Paper
 
<?xml encoding="utf-8" version="1.0"?>
<item><contributor.author>De Wit, M</contributor.author>
<contributor.author>van der Kamp, J</contributor.author>
<contributor.author>Masters, R</contributor.author>
<date.accessioned>2012-09-20T08:31:18Z</date.accessioned>
<date.available>2012-09-20T08:31:18Z</date.available>
<date.issued>2011</date.issued>
<identifier.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</identifier.citation>
<identifier.issn>2041-6695-(electronic)</identifier.issn>
<identifier.uri>http://hdl.handle.net/10722/166281</identifier.uri>
<description>2011 &#20126;&#22826;&#35222;&#35258;&#26371;&#35696;</description>
<description>Talk: Action and virtual environments</description>
<description>Open Access Journal</description>
<description.abstract>Unlike perceptual size judgments, actions&#8212;but not delayed actions&#8212;performed under full vision are relatively unaffected by the M&#252;ller-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&#8211;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, &amp; 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., &amp; Masters, R.S.W. (in press). Delayed pointing movements to masked M&#252;ller-Lyer figures are affected by target size but not the illusion. Neuropsychologia.</description.abstract>
<language>eng</language>
<publisher>Pion Ltd.. The Journal&apos;s web site is located at http://i-perception.perceptionweb.com/journal/I/</publisher>
<relation.ispartof>i-Perception</relation.ispartof>
<title>Distinct visual thresholds for egocentric and allocentric information pick up?</title>
<type>Conference_Paper</type>
<description.nature>link_to_OA_fulltext</description.nature>
<identifier.hkuros>208012</identifier.hkuros>
<identifier.volume>2</identifier.volume>
<identifier.issue>4</identifier.issue>
<identifier.spage>214</identifier.spage>
<identifier.epage>214</identifier.epage>
<publisher.place>United Kingdom</publisher.place>
<description.other>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</description.other>
<bitstream.url>http://hub.hku.hk/bitstream/10722/166281/1/re01.htm</bitstream.url>
</item>