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Titolo:
SOMATOTOPY OF HUMAN HAND SOMATOSENSORY CORTEX AS STUDIED IN SCALP EEG
Autore:
BAUMGARTNER C; DOPPELBAUER A; SUTHERLING WW; LINDINGER G; LEVESQUE MF; AULL S; ZEITLHOFER J; DEECKE L;
Indirizzi:
UNIV VIENNA,NEUROL CLIN,WAHRINGER GURTEL 18-20 A-1090 VIENNA AUSTRIA UNIV CALIF LOS ANGELES,DEPT NEUROL LOS ANGELES CA 90024 UNIV CALIF LOS ANGELES,DEPT NEUROSURG LOS ANGELES CA 90024
Titolo Testata:
Electroencephalography and clinical neurophysiology
fascicolo: 4, volume: 88, anno: 1993,
pagine: 271 - 279
SICI:
0013-4694(1993)88:4<271:SOHHSC>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
EVOKED MAGNETIC-FIELDS; FINGER STIMULATION; CYTOARCHITECTONIC AREAS; POTENTIAL FIELDS; MEDIAN NERVE; LOCALIZATION; N20; P22; TOPOGRAPHY; COMPONENTS;
Keywords:
SOMATOSENSORY CORTEX; SOMATOTOPIC ORGANIZATION; SOMATOSENSORY EVOKED POTENTIALS; ELECTROENCEPHALOGRAM; DIPOLE MODELING; FUNCTIONAL ANATOMY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
40
Recensione:
Indirizzi per estratti:
Citazione:
C. Baumgartner et al., "SOMATOTOPY OF HUMAN HAND SOMATOSENSORY CORTEX AS STUDIED IN SCALP EEG", Electroencephalography and clinical neurophysiology, 88(4), 1993, pp. 271-279

Abstract

We recorded somatosensory evoked potentials (SEPs) in scalp EEGs during stimulation of the median nerve, the ulnar nerve and the individualdigits in 3 normal subjects and in 1 epilepsy patient. In this patient we also measured SEPs from chronically indwelling subdural grid electrodes during electrocorticography (ECoG). We applied dipole modellingtechniques to study the 3-dimensional intracerebral locations and time activities of the neuronal sources underlying stimulation of different peripheral receptive fields. The sources underlying median nerve SEPs were located an average of 10.8 mm lateral inferior to those underlying ulnar nerve SEPs. Digit SEP sources showed a somatotopic arrangement from lateral inferior to medial superior in the order thumb, indexfinger, middle finger, ring finger and little finger, with some overlap or reversal for adjacent digits. The average distance between thumband, little finger was 12.5 mm. Thumb, index finger and middle fingerwere clustered around median nerve cortical representation, whereas ring finger and little finger were arranged around ulnar nerve cortex. In the epilepsy patient, the source localizations obtained in scalp EEGs showed good agreement with those on ECoGs. We conclude that SEPs recorded in scalp EEGs can be used to study functional topography of human somatosensory cortex non-invasively.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 17/09/19 alle ore 22:39:31