Activation of Cortical and Cerebellar Motor Areas during Executed and Imagined Hand Movements: An fMRI Study

Authors:
Martin Lotze;Pedro Montoya;Michael Erb;Ernst Hülsmann;Herta Flor;Uwe Klose;Niels Birbaumer;Wolfgang Grodd
Affiliations:
University of Tübingen;University of Tübingen;University of Tübingen;Universityof Tübingen;Humboldt-University Berlin;University of Tübingen;University of Tübingen;University of Tübingen
Venue:
Journal of Cognitive Neuroscience
Year:
1999

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Abstract

Brain activation during executed (EM) and imagined movements (IM) of the right and left hand was studied in 10 healthy right-handed subjects using functional magnetic resonance imagining (fMRI). Low electromyographic (EMG) activity of the musculi flexor digitorum superficialis and high vividness of the imagined movements were trained prior to image acquisition. Regional cerebral activation was measured by fMRI during EM and IM and compared to resting conditions. Anatomically selected regions of interest (ROIs) were marked interactively over the entire brain. In each ROI activated pixels above a t value of 2.45 (p