Functional MR Imaging Activation after Finger Tapping Has a Shorter Duration in the Basal Ganglia Than in the Sensorimotor Cortex

摘要

BACKGROUND AND PURPOSE: Repetitive motor tasks that produce sustained neuronal activity in the sensorimotor cortex produce transient neuronal activity in subcortical regions. We tested the hypothesis that a reference function modeling a transient hemodynamic response would more reliably detect activation in the basal ganglia than would a conventional reference function, which models a sustained hemodynamic response.