Paper Info
Title
Working memory maintenance of grasp-target information in the human posterior parietal cortex.
Abstract
Event-related functional magnetic resonance imaging was applied to identify cortical areas involved in maintaining target information in working memory used for an upcoming grasping action. Participants had to grasp with their thumb and index finger of the dominant right hand three-dimensional objects of different size and orientation. Reaching-to-grasp movements were performed without visual feedback either immediately after object presentation or after a variable delay of 2–12s. The right inferior parietal cortex demonstrated sustained neural activity throughout the delay, which overlapped with activity observed during encoding of the grasp target. Immediate and delayed grasping activated similar motor-related brain areas and showed no differential activity. The results suggest that the right inferior parietal cortex plays an important functional role in working memory maintenance of grasp-related information. Moreover, our findings confirm the assumption that brain areas engaged in maintaining information are also involved in encoding the same information, and thus extend previous findings on working memory function of the posterior parietal cortex in saccadic behavior to reach-to-grasp movements.
Year
DOI
Venue
2011
10.1016/j.neuroimage.2010.09.080
NeuroImage
Keywords
Field
DocType
posterior parietal cortex,working memory,three dimensional,indexation
Developmental psychology,Functional magnetic resonance imaging,Mirror neuron,Working memory,Visual memory,Cognitive psychology,Psychology,Posterior parietal cortex,Interference theory,Spatial memory,P3b
Journal
Volume
Issue
ISSN
54
3
1053-8119
Citations 
PageRank 
References 
0
0.34
7
Authors
8
Name
Order
Citations
PageRank
Katja Fiehler101.01
Michael M Bannert210.71
Matthias Bischoff300.68
Carlo R Blecker4142.38
Rudolf Stark55514.53
Dieter Vaitl66314.57
Volker H Franz700.34
Frank Rösler800.34