Abstract：
:A central question in the study of human behavior is the origin of willed action. EEG recordings of surface brain activity from human subjects performing a self-initiated movement show that the subjective experience of wanting to move follows, rather than precedes, the 'readiness potential'--an electrophysiological mark of motor preparation. This raises the issue of how conscious experience of willed action is generated. Here we show that patients with parietal lesions can report when they started moving, but not when they first became aware of their intention to move. This stands in contrast with the performance of cerebellar patients who behaved as normal subjects. We thus propose that when a movement is planned, activity in the parietal cortex, as part of a cortico-cortical sensorimotor processing loop, generates a predictive internal model of the upcoming movement. This model might form the neural correlate of motor awareness.
journal_name
Nat Neuroscijournal_title
Nature neuroscienceauthors
Sirigu A,Daprati E,Ciancia S,Giraux P,Nighoghossian N,Posada A,Haggard Pdoi
10.1038/nn1160subject
Has Abstractpub_date
2004-01-01 00:00:00pages
80-4issue
1eissn
1097-6256issn
1546-1726pii
nn1160journal_volume
7pub_type
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更新日期：2014-11-01 00:00:00
