Differential force scaling of fine-graded power grip force in the sensorimotor network.

ABSTRACT: Force scaling in the sensorimotor network during generation and control of static or dynamic grip force has been the subject of many investigations in monkeys and human subjects. In human, the relationship between BOLD signal in cortical and subcortical regions and force still remains controversial. With respect to grip force, the modulation of the BOLD signal has been mostly studied for forces often reaching high levels while little attention has been given to the low range for which electrophysiological neuronal correlates have been demonstrated. We thus conducted a whole-brain fMRI study on the control of fine-graded force in the low range, using a power grip and three force conditions in a block design. Participants generated on a dynamometer visually guided repetitive force pulses (ca

SUBMITTER: Keisker B 

PROVIDER: S-EPMC6871245 | biostudies-literature | 2009 Aug

REPOSITORIES: biostudies-literature