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Looking for the fast signal: Neuronal and hemodynamic evoked responses of the sensory-motor cortex.

M. A. Franceschini, J. Thompson, J. P. Culver, G. Strangman, and D. A. Boas

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Abstract

In this paper we investigate the potential of near-infrared spectroscopy (NIRS) to monitor both the direct effects of neural activation (the so-called fast signal) and the consequent changes in local cerebral hemodynamics. To this end we mapped contra- and ipsi-lateral motor and sensorimotor cortex during hand tapping, hand tactile, and electrical median nerve stimulation.

© 2002 Optical Society of America

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