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Titolo:
FUNCTIONAL MAGNETIC-RESONANCE-IMAGING AT 1.5T DURING SENSORIMOTOR ANDCOGNITIVE TASK
Autore:
SABBAH P; SIMOND G; LEVRIER O; HABIB M; TRABAUD V; MURAYAMA N; MAZOYER BM; BRIANT JF; RAYBAUD C; SALAMON G;
Indirizzi:
HOP ENFANTS LA TIMONE,DEPT NEURORADIOL,SERV NEURORADIOL F-13385 MARSEILLE FRANCE HOP ENFANTS LA TIMONE,DEPT NEURORADIOL,SERV NEURORADIOL F-13385 MARSEILLE FRANCE HOSP LAVERAN,DEPT RADIOL MARSEILLE FRANCE HOP ENFANTS LA TIMONE,UNITE IRM F-13385 MARSEILLE FRANCE HOP ENFANTS LA TIMONE,DEPT NEUROL F-13385 MARSEILLE FRANCE CEA,SERV HOSP FREDERIC JOLIOT,IMAGERIE NEUROFONCT GRP F-91406 ORSAY FRANCE
Titolo Testata:
European neurology
fascicolo: 3, volume: 35, anno: 1995,
pagine: 131 - 136
SICI:
0014-3022(1995)35:3<131:FMA1DS>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
HUMAN VISUAL-CORTEX; CEREBRAL BLOOD-FLOW; HUMAN BRAIN; SENSORY STIMULATION; CONTRAST; OXYGENATION; MRI; ACTIVATION; RESOLUTION; EPI;
Keywords:
FUNCTIONAL MRI; IMAGE PROCESSING; BRAIN FUNCTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
26
Recensione:
Indirizzi per estratti:
Citazione:
P. Sabbah et al., "FUNCTIONAL MAGNETIC-RESONANCE-IMAGING AT 1.5T DURING SENSORIMOTOR ANDCOGNITIVE TASK", European neurology, 35(3), 1995, pp. 131-136

Abstract

Functional activations of the human brain cortex were observed with astandard 1.5-tesla MR imaging system using a long time echo fast low-angle shot sequence. Neural activation increases regional cerebral blood flow resulting in increased capillaries and venous blood oxygenation. Processing requires adapted algorithms because the time course of intensity signal showed fluctuations of the baseline. The use of a 'follow-up' method to generate activation maps is proposed. Brain activation was detected in striate cortex during photic stimulation and in sensorimotor areas while subjects were moving their hands. In mental imagery tasks, we observed a primary and secondary visual cortex activation during memory recall of the flashing light. Motor ideation showed anactivation of the rolandic areas.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 15:31:44