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Representational precision in visual cortex reveals outcome encoding and reward modulation during action preparation.
- Source :
-
NeuroImage [Neuroimage] 2017 Aug 15; Vol. 157, pp. 415-428. Date of Electronic Publication: 2017 Jun 12. - Publication Year :
- 2017
-
Abstract
- According to ideomotor theory, goal-directed action involves the active perceptual anticipation of actions and their associated effects. We used multivariate analysis of fMRI data to test if preparation of an action promotes precision in the perceptual representation of the action. In addition, we tested how reward magnitude modulates this effect. Finally, we examined how expectation and uncertainty impact neural precision in the motor cortex. In line with our predictions, preparation of a hand or face action increased the precision of neural activation patterns in the extrastriate body area (EBA) and fusiform face area (FFA), respectively. The size of this effect of anticipation predicted individuals' efficiency at performing the prepared action. In addition, increasing reward magnitude increased the precision of perceptual representations in both EBA and FFA although this effect was limited to the group of participants that learned to associate face actions with high reward. Surprisingly, examination of representations in the hand motor cortex and face motor cortex yielded effects in the opposite direction. Our findings demonstrate that the precision of representations in visual and motor areas provides an important neural signature of the sensorimotor representations involved in goal-directed action.<br /> (Copyright © 2017 Elsevier Inc. All rights reserved.)
- Subjects :
- Adult
Face
Female
Hand
Humans
Magnetic Resonance Imaging
Male
Motor Cortex diagnostic imaging
Temporal Lobe diagnostic imaging
Visual Cortex diagnostic imaging
Young Adult
Anticipation, Psychological physiology
Brain Mapping methods
Motor Activity physiology
Motor Cortex physiology
Pattern Recognition, Visual physiology
Psychomotor Performance physiology
Reward
Temporal Lobe physiology
Visual Cortex physiology
Subjects
Details
- Language :
- English
- ISSN :
- 1095-9572
- Volume :
- 157
- Database :
- MEDLINE
- Journal :
- NeuroImage
- Publication Type :
- Academic Journal
- Accession number :
- 28619654
- Full Text :
- https://doi.org/10.1016/j.neuroimage.2017.06.012