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Titolo:
BILATERAL SIMULTANEOUS TRANSCRANIAL DOPPLER MONITORING OF FLOW VELOCITY CHANGES DURING VISUOSPATIAL AND VERBAL WORKING-MEMORY TASKS
Autore:
CUPINI LM; MATTEIS M; TROISI E; SABBADINI M; BERNARDI G; CALTAGIRONE C; SILVESTRINI M;
Indirizzi:
UNIV ROMA TOR VERGATA,OSPED S EUGENIO,NEUROL CLIN,P UMANESIMO 10 I-00144 ROME ITALY IRCCS S LUCIA ROME ITALY
Titolo Testata:
Brain
, volume: 119, anno: 1996,
parte:, 4
pagine: 1249 - 1253
SICI:
0006-8950(1996)119:<1249:BSTDMO>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEALTHY HEMISPHERE; COGNITIVE ACTIVITY; ACTIVATION; DOMINANCE; RECOVERY;
Keywords:
TRANSCRANIAL DOPPLER; WORKING MEMORY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
22
Recensione:
Indirizzi per estratti:
Citazione:
L.M. Cupini et al., "BILATERAL SIMULTANEOUS TRANSCRANIAL DOPPLER MONITORING OF FLOW VELOCITY CHANGES DURING VISUOSPATIAL AND VERBAL WORKING-MEMORY TASKS", Brain, 119, 1996, pp. 1249-1253

Abstract

Twenty-two normal volunteers were studied by simultaneous bilateral transcranial Doppler (TCD) monitoring of flow velocity changes in the middle cerebral arteries during visuospatial and verbal working memory tasks. All tasks were visually presented material; they required full engagement of subjects during the study, similar attention demands anda manual response when the appropriate target was recognized. Stimuliwere presented tachistoscopically. Each task produced significant anddistinct effects on flow velocity with respect to baseline values. When side-to-side comparisons were performed a significantly higher increase in flow velocity was observed in the right middle cerebral artery(MCA) compared with rite left one during the visuospatial task (P < 0.005). Our findings agree with results of recent studies using PET which show lateralized activation during working memory tasks. The high temporal resolution of this technique suggests that further applicationin cerebral flow change monitoring during neuropsychological studies could be promising.

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Documento generato il 01/12/20 alle ore 08:06:08