PT  - JOURNAL ARTICLE
AU  - Zimmermann, Marius
AU  - Verhagen, Lennart
AU  - de Lange, Floris P.
AU  - Toni, Ivan
TI  - The Extrastriate Body Area Computes Desired Goal States during Action Planning
AID  - 10.1523/ENEURO.0020-16.2016
DP  - 2016 Mar 01
TA  - eneuro
PG  - ENEURO.0020-16.2016
VI  - 3
IP  - 2
4099  - http://www.eneuro.org/content/3/2/ENEURO.0020-16.2016.short
4100  - http://www.eneuro.org/content/3/2/ENEURO.0020-16.2016.full
SO  - eneuro2016 Mar 01; 3
AB  - How do object perception and action interact at a neural level? Here we test the hypothesis that perceptual features, processed by the ventral visuoperceptual stream, are used as priors by the dorsal visuomotor stream to specify goal-directed grasping actions. We present three main findings, which were obtained by combining time-resolved transcranial magnetic stimulation and kinematic tracking of grasp-and-rotate object manipulations, in a group of healthy human participants (N = 22). First, the extrastriate body area (EBA), in the ventral stream, provides an initial structure to motor plans, based on current and desired states of a grasped object and of the grasping hand. Second, the contributions of EBA are earlier in time than those of a caudal intraparietal region known to specify the action plan. Third, the contributions of EBA are particularly important when desired and current object configurations differ, and multiple courses of actions are possible. These findings specify the temporal and functional characteristics for a mechanism that integrates perceptual processing with motor planning.