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MRI measurement of the functional blood flow changes in a large superficial vein draining the motor cortex
Author(s) -
DelonMartin Chantal,
Roth Muriel,
Morand Stéphanie,
Massarelli Raphaël,
Belle Valérie,
Decety Jean,
Felblinger Jacques,
Décorps Michel,
Segebarth Christoph
Publication year - 1999
Publication title -
nmr in biomedicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.278
H-Index - 114
eISSN - 1099-1492
pISSN - 0952-3480
DOI - 10.1002/(sici)1099-1492(199904)12:2<107::aid-nbm553>3.0.co;2-l
Subject(s) - blood flow , thumb , motor cortex , anatomy , psychology , medicine , neuroscience , cardiology , stimulation
Abstract In this study, phase‐contrast MR techniques are applied in order to measure the blood flow changes induced by a motor task in a large superficial vein draining the motor cortex. The measurements were applied to six healthy volunteers, in motor rest conditions and during performance of a motor task. The latter consisted of sequential finger‐to‐thumb opposition. The task was actually executed and mentally simulated. Significant blood flow increases were found when changing from from mental simulation to actual execution of the motor task (increases ranging between 1.6 and 10.3 ml/min, i.e. 9% and 45%, respectively) and from resting conditions to actual execution of the motor task (increases ranging between 1.7 and 14.0 ml/min, i.e. 32% and 72%, respectively). Copyright © 1999 John Wiley & Sons, Ltd.