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Titolo:
CORTICAL STIMULATION MAPPING OF PHANTOM LIMB ROLANDIC CORTEX - CASE-REPORT
Autore:
OJEMANN JG; SILBERGELD DL;
Indirizzi:
WASHINGTON UNIV,SCH MED,DEPT NEUROL & NEUROL SURG,EPILEPSY PROGRAM,CAMPUS BOX 8057 ST LOUIS MO 63110 WASHINGTON UNIV,SCH MED,DEPT NEUROL & NEUROL SURG,EPILEPSY PROGRAM STLOUIS MO 63110
Titolo Testata:
Journal of neurosurgery
fascicolo: 4, volume: 82, anno: 1995,
pagine: 641 - 644
SICI:
0022-3085(1995)82:4<641:CSMOPL>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
PRIMARY MOTOR CORTEX; POSITRON EMISSION TOMOGRAPHY; ELECTRICAL-STIMULATION; REORGANIZATION; LOCALIZATION; ORGANIZATION; AMPUTATION;
Keywords:
BRAIN NEOPLASM; CORTICAL MAPPING; CORTICAL ORGANIZATION; PHANTOM LIMB; SENSORIMOTOR CORTEX; SOMATOSENSORY CORTEX;
Tipo documento:
Note
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
18
Recensione:
Indirizzi per estratti:
Citazione:
J.G. Ojemann e D.L. Silbergeld, "CORTICAL STIMULATION MAPPING OF PHANTOM LIMB ROLANDIC CORTEX - CASE-REPORT", Journal of neurosurgery, 82(4), 1995, pp. 641-644

Abstract

Findings of intraoperative rolandic cortex mapping during awake craniotomy for a tumor in a patient with a contralateral upper-extremity amputation are presented. This patient sustained a traumatic amputation at the mid-humerus 24 years previously. Initially he had experienced rare painless phantom limb sensations but none in the past 10 years. Functional mapping during an awake craniotomy was performed to maximize safe tumor resection. Typical temporal and frontal speech areas were identified; motor representation of face and jaw extended more superiorly than sensory representation. Shoulder movements were evoked more laterally than usual at the superior aspect of the craniotomy. A small region of precentral gyrus, between the jaw and shoulder representations, elicited no detectable effect when stimulated. Somatosensory mapping showed a similar topographical distribution of face and mouth cortex; however, posterior and inferior to the shoulder motor cortex, right arm and hand (phantom) sensations were evoked. Evidence suggests that significant motor reorganization occurs following an amputation, with expansion of neighboring homuncular representations without loss of somatosensory representation, despite a long period of time without any sensation referable to the amputated limb. Contrary to models of sensory cortex plasticity, the plasticity of the adult cortex may be systemspecific, with reorganization present in motor, but not in sensory, cortical systems.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 04:53:37