Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/28138
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dc.contributor.authorPraamstra, Peteren_UK
dc.contributor.authorKourtis, Dimitriosen_UK
dc.contributor.authorNazarpour, Kianoushen_UK
dc.date.accessioned2018-11-08T17:47:44Z-
dc.date.available2018-11-08T17:47:44Z-
dc.date.issued2009-10-31en_UK
dc.identifier.urihttp://hdl.handle.net/1893/28138-
dc.description.abstractNeurophysiological studies in monkey have suggested that premotor and motor cortex may prepare for multiple movements simultaneously, sustained by cooperative and competitive interactions within and between the neural populations encoding different actions. Here, we investigate whether competition between alternative movement directions, manipulated in terms of number and spatial angle, is reflected in electroencephalographic (EEG) measures of (pre)motor cortical activity in humans. EEG was recorded during performance of a center-out pointing task in which response signals were preceded by cues providing prior information in the form of arrows pointing to one or more possible movement targets. Delay-period activity in (pre)motor cortex was modulated in the predicted manner by the number of possible movement directions and by the angle separating them. Response latencies, however, were determined not only by the amplitude of movementpreparatory activity, but also by differences in the duration of stimulus evaluation against the visuospatial memory of the cue, reflected in EEG potentials originating from posterior parietal cortex (PPC). Specifically, the spatial proximity of possible movement targets was processed differently by (pre)motor and posterior parietal cortex. Spatial proximity enhanced the amplitude of (pre)motor cortex preparatory activity during the delay period but delayed evaluation of the response signal in the PPC, thus producing opposite effects on response latency. The latter finding supports distributed control of movement decisions in the frontoparietal network, revealing a feature of distributed control that is of potential significance for the understanding of distracter effects in reaching and pointing. Copyright © 2009 The American Physiological Society.en_UK
dc.language.isoenen_UK
dc.publisherAmerican Physiological Societyen_UK
dc.relationPraamstra P, Kourtis D & Nazarpour K (2009) Simultaneous preparation of multiple potential movements: Opposing effects of spatial proximity mediated by premotor and parietal cortex. Journal of Neurophysiology, 102 (4), pp. 2084-2095. https://doi.org/10.1152/jn.00413.2009.en_UK
dc.rightsThe publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.en_UK
dc.titleSimultaneous preparation of multiple potential movements: Opposing effects of spatial proximity mediated by premotor and parietal cortexen_UK
dc.typeJournal Articleen_UK
dc.rights.embargodate2999-12-31en_UK
dc.rights.embargoreason[2009_Praamstra_etal_JNeurophy.pdf] The publisher does not allow this work to be made publicly available in this Repository therefore there is an embargo on the full text of the work.en_UK
dc.identifier.doi10.1152/jn.00413.2009en_UK
dc.identifier.pmid19657085en_UK
dc.citation.jtitleJournal of Neurophysiologyen_UK
dc.citation.issn1522-1598en_UK
dc.citation.issn0022-3077en_UK
dc.citation.volume102en_UK
dc.citation.issue4en_UK
dc.citation.spage2084en_UK
dc.citation.epage2095en_UK
dc.citation.publicationstatusPublisheden_UK
dc.citation.peerreviewedRefereeden_UK
dc.type.statusVoR - Version of Recorden_UK
dc.contributor.funderUniversity of Birminghamen_UK
dc.author.emaildimitrios.kourtis@stir.ac.uken_UK
dc.contributor.affiliationUniversity of Birminghamen_UK
dc.contributor.affiliationUniversity of Birminghamen_UK
dc.contributor.affiliationUniversity of Birminghamen_UK
dc.identifier.isi000270932000007en_UK
dc.identifier.scopusid2-s2.0-70350333579en_UK
dc.identifier.wtid520158en_UK
dc.contributor.orcid0000-0003-2535-6196en_UK
dc.date.accepted2009-07-27en_UK
dc.date.firstcompliantdepositdate2018-01-23en_UK
Appears in Collections:Psychology Journal Articles

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