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Article: Delayed pointing movements to masked Müller-Lyer figures are affected by target size but not the illusion

TitleDelayed pointing movements to masked Müller-Lyer figures are affected by target size but not the illusion
Authors
Issue Date2011
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/neuropsychologia
Citation
Neuropsychologia, 2011, v. 49 n. 7, p. 1903-1909 How to Cite?
AbstractThere is ongoing debate with respect to interpretation of the finding that, in contrast to perceptual size judgments, actions are relatively unaffected by the Müller-Lyer illusion. In normal unrestricted viewing situations observers cannot perform an action directed at an object without simultaneously perceiving the object - this makes it difficult to unequivocally establish whether observed effects are a function of vision for perception, vision for action, a combination of both, or of a single all-purpose visual system. However, there is evidence that observers are capable of performing actions towards objects of which they are not consciously aware, implying that two distinct visual thresholds may exist; one accompanying vision for action and one accompanying vision for perception. To investigate this possibility we created a situation in which visual information was presented below the perception threshold, but above the purported action threshold, allowing examination of action responses independent of contributions from vision for perception. Following a perceptual categorization task, participants performed delayed pointing movements towards briefly exposed masked Müller-Lyer targets of different sizes. When the targets were presented below the perception threshold, participants were unable to discriminate between them, yet their delayed pointing movements were affected by target size (but not the illusion). The results imply that vision for action is functional even after a delay and/or that the pickup of egocentric information is associated with a lower visual threshold than the pickup of allocentric information. © 2011 Elsevier Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/176073
ISSN
2015 Impact Factor: 2.989
2015 SCImago Journal Rankings: 2.072
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorDe Wit, Men_US
dc.contributor.authorVan Der Kamp, Jen_US
dc.contributor.authorMasters, RSWen_US
dc.date.accessioned2012-11-26T09:04:51Z-
dc.date.available2012-11-26T09:04:51Z-
dc.date.issued2011en_US
dc.identifier.citationNeuropsychologia, 2011, v. 49 n. 7, p. 1903-1909en_US
dc.identifier.issn0028-3932en_US
dc.identifier.urihttp://hdl.handle.net/10722/176073-
dc.description.abstractThere is ongoing debate with respect to interpretation of the finding that, in contrast to perceptual size judgments, actions are relatively unaffected by the Müller-Lyer illusion. In normal unrestricted viewing situations observers cannot perform an action directed at an object without simultaneously perceiving the object - this makes it difficult to unequivocally establish whether observed effects are a function of vision for perception, vision for action, a combination of both, or of a single all-purpose visual system. However, there is evidence that observers are capable of performing actions towards objects of which they are not consciously aware, implying that two distinct visual thresholds may exist; one accompanying vision for action and one accompanying vision for perception. To investigate this possibility we created a situation in which visual information was presented below the perception threshold, but above the purported action threshold, allowing examination of action responses independent of contributions from vision for perception. Following a perceptual categorization task, participants performed delayed pointing movements towards briefly exposed masked Müller-Lyer targets of different sizes. When the targets were presented below the perception threshold, participants were unable to discriminate between them, yet their delayed pointing movements were affected by target size (but not the illusion). The results imply that vision for action is functional even after a delay and/or that the pickup of egocentric information is associated with a lower visual threshold than the pickup of allocentric information. © 2011 Elsevier Ltd.en_US
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/neuropsychologiaen_US
dc.relation.ispartofNeuropsychologiaen_US
dc.subject.meshAdulten_US
dc.subject.meshCuesen_US
dc.subject.meshData Interpretation, Statisticalen_US
dc.subject.meshFemaleen_US
dc.subject.meshHumansen_US
dc.subject.meshIllusions - Psychologyen_US
dc.subject.meshJudgmenten_US
dc.subject.meshMaleen_US
dc.subject.meshMiddle Ageden_US
dc.subject.meshMovement - Physiologyen_US
dc.subject.meshPerceptual Maskingen_US
dc.subject.meshPhotic Stimulationen_US
dc.subject.meshPsychomotor Performance - Physiologyen_US
dc.subject.meshVisual Perception - Physiologyen_US
dc.subject.meshYoung Adulten_US
dc.titleDelayed pointing movements to masked Müller-Lyer figures are affected by target size but not the illusionen_US
dc.typeArticleen_US
dc.identifier.emailMasters, RSW: mastersr@hku.hken_US
dc.identifier.authorityMasters, RSW=rp00935en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.neuropsychologia.2011.03.017en_US
dc.identifier.pmid21420989-
dc.identifier.scopuseid_2-s2.0-79956153823en_US
dc.identifier.hkuros185542-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79956153823&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume49en_US
dc.identifier.issue7en_US
dc.identifier.spage1903en_US
dc.identifier.epage1909en_US
dc.identifier.isiWOS:000292009400029-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridDe Wit, M=35236753500en_US
dc.identifier.scopusauthoridVan Der Kamp, J=7003734906en_US
dc.identifier.scopusauthoridMasters, RSW=7102880488en_US
dc.identifier.citeulike9127108-

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