ERP effects of movement preparation on visual processing: attention shifts to the hand, not the goal.

Elena Gherri, José Van Velzen, Martin Eimer

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We investigated whether lateralised ERP components during reaching movement preparation are triggered by effector or target selection, and whether movement preparation induces spatially selective modulations of visual processing. Participants executed one of four possible movements (left/right hand toward left/right target). In experiment 1, a cue indicated the effector to use or the movement direction, and the imperative stimulus contained the lacking information (direction or effector, respectively). In experiment 2, the cue conveyed full information (effector and direction). Task-irrelevant visual probe stimuli were presented randomly near the hand or the target location during response preparation.
In both experiments anterior and posterior lateralised ERP components (ADAN, LDAP) were elicited contralateral to the selected effector and to the selected movement direction. The LDAP was more pronounced during effector selection. During preparation based on partial information, enhanced early visual components were observed in ERPs elicited by probes near the cued hand, but not near the target location. During preparation based on full information, visual processing was enhanced near the target location only when effector and target were located in the same hemifield. These results suggest that during covert reaching movement preparation, visuospatial attention shifts toward the starting location of the cued hand, not to the goal location.
Original languageEnglish
Title of host publicationCognitive Processing
Pages100-101
Volume7
EditionS1
ISBN (Electronic)ISSN 1612-4790
DOIs
Publication statusPublished - 2006
Event 7th Annual Meeting of the International Multisensory Research Forum - Ireland, Dublin, Ireland
Duration: 18 Jun 200621 Jun 2006

Conference

Conference 7th Annual Meeting of the International Multisensory Research Forum
CountryIreland
CityDublin
Period18/06/0621/06/06

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