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Titolo:
Mapping of early and late human somatosensory evoked brain potentials to phasic galvanic painful stimulation
Autore:
Babiloni, C; Babiloni, F; Carducci, F; Cincotti, F; Rosciarelli, F; Rossini, PM; Arendt-Nielsen, L; Chen, ACN;
Indirizzi:
Univ Rome La Sapienza, Dipartimento Fisiol Umana & Farmacol, Sez EEG Alta Risoluz, I-00185 Rome, Italy Univ Rome La Sapienza Rome Italy I-00185 ta Risoluz, I-00185 Rome, Italy Osp FBF Isola Tiberina, Dipartimento Neurosci, AFaR CRCCS, Rome, Italy OspFBF Isola Tiberina Rome Italy nto Neurosci, AFaR CRCCS, Rome, Italy IRCCS S Giovanni Dio, Brescia, Italy IRCCS S Giovanni Dio Brescia ItalyIRCCS S Giovanni Dio, Brescia, Italy Ctr Sensory Motor Interact, Human Brain Mapping & Cort Imaging Lab, Aalborg, Denmark Ctr Sensory Motor Interact Aalborg Denmark maging Lab, Aalborg, Denmark
Titolo Testata:
HUMAN BRAIN MAPPING
fascicolo: 3, volume: 12, anno: 2001,
pagine: 168 - 179
SICI:
1065-9471(200103)12:3<168:MOEALH>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELECTRICAL SOURCE ANALYSIS; EVENT-RELATED POTENTIALS; NERVE-STIMULATION; CINGULATE CORTEX; CEREBRAL-CORTEX; CORTICAL RESPONSES; LAPLACIAN ESTIMATE; MAGNETIC-FIELDS; EEG POTENTIALS; MEDIAN NERVE;
Keywords:
phasic painful stimulation; EEG; median-nerve somatosensory-evoked potentials (SEPs); surface Laplacian; human cerebral cortex;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
60
Recensione:
Indirizzi per estratti:
Indirizzo: Babiloni, C Univ Rome La Sapienza, Dipartimento Fisiol Umana & Farmacol, Sez EEG Alta Risoluz, Piazzale Aldo Moro 5, I-00185 Rome, Italy Univ Rome LaSapienza Piazzale Aldo Moro 5 Rome Italy I-00185
Citazione:
C. Babiloni et al., "Mapping of early and late human somatosensory evoked brain potentials to phasic galvanic painful stimulation", HUM BRAIN M, 12(3), 2001, pp. 168-179

Abstract

In the present study, we modeled the spatiotemporal evolution of human somatosensory evoked cortical potentials (SEPs) to brief median-nerve galvanicpainful stimulation. SEPs were recorded (-50 to +250 ms) from 12 healthy subjects following nonpainful (reference), slight painful, and moderate painful stimulations (subjective scale). Laplacian transformation of scalp SEPsreduced head volume conduction effects and annulled electric reference influence. Typical SEP components to the galvanic nonpainful stimulation were contralateral frontal P20-N30-N60-N120-P170, central P22-P40, and parietal N20-P30-P60-P120 (N = negativity P = positivity number = latency in ms). These components were observed also with the painful stimulations, the N60, N120, P170 having a longer latency with the painful than nonpainful stimulations. Additional SEP components elicited by the painful stimulations were parietomedian P80 as well as central N125, P170 (cP170), and P200. These additional SEP components included the typical vertex negative-positive complex following transient painful stimulations. Latency of the SEP components exclusively elicited by painful stimulation is highly compatible with the involvement of A delta myelinated fibers/spinothalamic pathway. The topography of these components is in line with the response of both nociceptive medial and lateral systems including bilateral primary sensorimotor and anterior cingulate cortical areas. The role of attentive, affective, and motor aspects in the modulation of the reported SEP components merits investigation in future experiments. Hum. Brain Mapping 12:168-179, 2001. (C) 2001 Wiley-Liss, Inc.

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Documento generato il 02/04/20 alle ore 12:36:49