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dc.contributor.authorCaligiore, D
dc.contributor.authorBorghi, AM
dc.contributor.authorParisi, D
dc.contributor.authorEllis, R
dc.contributor.authorCangelosi, A
dc.contributor.authorBaldassarre, G
dc.date.accessioned2015-10-13T18:55:31Z
dc.date.available2015-10-13T18:55:31Z
dc.date.issued2013-01
dc.identifier.issn0340-0727
dc.identifier.issn1430-2772
dc.identifier.urihttp://hdl.handle.net/10026.1/3609
dc.description.abstract

Seeing an object activates both visual and action codes in the brain. Crucial evidence supporting this view is the observation of object to response compatibility effects: perception of an object can facilitate or interfere with the execution of an action (e.g., grasping) even when the viewer has no intention of interacting with the object. TRoPICALS is a computational model that proposes some general principles about the brain mechanisms underlying compatibility effects, in particular the idea that top-down bias from prefrontal cortex, and whether it conflicts or not with the actions afforded by an object, plays a key role in such phenomena. Experiments on compatibility effects using a target and a distractor object show the usual positive compatibility effect of the target, but also an interesting negative compatibility effect of the distractor: responding with a grip compatible with the distractor size produces slower reaction times than the incompatible case. Here, we present an enhanced version of TRoPICALS that reproduces and explains these new results. This explanation is based on the idea that the prefrontal cortex plays a double role in its top-down guidance of action selection producing: (a) a positive bias in favour of the action requested by the experimental task; (b) a negative bias directed to inhibiting the action evoked by the distractor. The model also provides testable predictions on the possible consequences of damage to volitional circuits such as in Parkinsonian patients.

dc.format.extent7-19
dc.format.mediumPrint-Electronic
dc.languageen
dc.language.isoeng
dc.publisherSpringer Science and Business Media LLC
dc.subjectComputer Simulation
dc.subjectHand Strength
dc.subjectHumans
dc.subjectIntention
dc.subjectLearning
dc.subjectModels, Theoretical
dc.subjectMovement
dc.subjectPsychomotor Performance
dc.subjectReaction Time
dc.subjectVisual Cortex
dc.subjectVisual Perception
dc.titleHow affordances associated with a distractor object affect compatibility effects: A study with the computational model TRoPICALS
dc.typejournal-article
dc.typeArticle
plymouth.author-urlhttps://www.ncbi.nlm.nih.gov/pubmed/22327121
plymouth.issue1
plymouth.volume77
plymouth.publisher-urlhttp://dx.doi.org/10.1007/s00426-012-0424-1
plymouth.publication-statusPublished
plymouth.journalPsychological Research
dc.identifier.doi10.1007/s00426-012-0424-1
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/Faculty of Health
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering
plymouth.organisational-group/Plymouth/Research Groups
plymouth.organisational-group/Plymouth/Research Groups/Centre for Brain, Cognition and Behaviour (CBCB)
plymouth.organisational-group/Plymouth/Research Groups/Centre for Brain, Cognition and Behaviour (CBCB)/Brain
plymouth.organisational-group/Plymouth/Research Groups/Institute of Health and Community
plymouth.organisational-group/Plymouth/Research Groups/Marine Institute
dc.publisher.placeGermany
dcterms.dateAccepted2012-01-30
dc.identifier.eissn1430-2772
dc.rights.embargoperiodNot known
rioxxterms.versionofrecord10.1007/s00426-012-0424-1
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2013-01
rioxxterms.typeJournal Article/Review


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