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Titolo:
SOMATOSENSORY CORTICAL PLASTICITY IN ADULT HUMANS REVEALED BY MAGNETOENCEPHALOGRAPHY
Autore:
MOGILNER A; GROSSMAN JAL; RIBARY U; JOLIOT M; VOLKMANN J; RAPAPORT D; BEASLEY RW; LLINAS RR;
Indirizzi:
NYU MED CTR,CTR NEUROMAGNETISM,DEPT PHYSIOL & BIOPHYS,550 1ST AVE NEWYORK NY 10016 NYU MED CTR,CTR NEUROMAGNETISM,DEPT PHYSIOL & BIOPHYS,550 1ST AVE NEWYORK NY 10016 NYU MED CTR,INST RECONSTRUCT PLAST SURG,HAND SURG SERV NEW YORK NY 10016
Titolo Testata:
Proceedings of the National Academy of Sciences of the United Statesof America
fascicolo: 8, volume: 90, anno: 1993,
pagine: 3593 - 3597
SICI:
0027-8424(1993)90:8<3593:SCPIAH>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
DIGIT AMPUTATION; OWL MONKEYS; CORTEX; REORGANIZATION; RESPONSES; HAND; 3B;
Keywords:
SOMATOSENSORY CORTEX; BRAIN MAPPING;
Tipo documento:
Article
Natura:
Periodico
Citazioni:
25
Recensione:
Indirizzi per estratti:
Citazione:
A. Mogilner et al., "SOMATOSENSORY CORTICAL PLASTICITY IN ADULT HUMANS REVEALED BY MAGNETOENCEPHALOGRAPHY", Proceedings of the National Academy of Sciences of the United Statesof America, 90(8), 1993, pp. 3593-3597

Abstract

Microelectrode recordings in adult mammals have clearly demonstrated that somatosensory cortical maps reorganize following peripheral nerveinjuries and functional modifications; however, such reorganization has never been directly demonstrated in humans. Using magnetoencephalography, we have been able to demonstrate the somatotopic organization of the hand area in normal humans with high spatial precision. Somatosensory cortical plasticity was detected in two adults who were studied before and after surgical separation of webbed fingers (syndactyly). The presurgical maps displayed shrunken and nonsomatotopic hand representations. Within weeks following surgery, cortical reorganization occurring over distances of 3-9 mm was evident, correlating with the new functional status of their separated digits. In contrast, no modification of the somatosensory map was observed months following transfer of a neurovascular skin island flap for sensory reconstruction of the thumb in two subjects in whom sensory transfer failed to occur.

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Documento generato il 08/07/20 alle ore 08:12:45