Abstract:
:After amputation of an arm the sensory map of the body changes radically, causing the sensory input from face to 'invade' the original hand area in the brain. As a result, touching the face of the amputee evokes tactile sensations on the phantom. These sensory referrals from the face to phantom hand occur in a stable, topographically organized manner. We now find that volitional movements of the phantom cause striking, systematic shifts in the map along the direction of movement. We conclude that the reorganization of maps is based partly on reversible inhibition of ordinarily silent synapses, not entirely on new anatomical connections. This finding further highlights the dynamic nature of the brain on remarkably short-time scales.
journal_name
Neuroreportjournal_title
Neuroreportauthors
Ramachandran VS,Brang D,McGeoch PDdoi
10.1097/WNR.0b013e32833be9absubject
Has Abstractpub_date
2010-07-14 00:00:00pages
727-30issue
10eissn
0959-4965issn
1473-558Xjournal_volume
21pub_type
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