Motor-evoked potentials following imagery and limb disuse

The International Journal of Neuroscience
Ryan T Crews, Gary Kamen

Abstract

This article investigated whether mental imagery training could reduce the detrimental effects produced by limb disuse. Subjects learned a task requiring fifth finger abduction. Motor-evoked potentials (MEPs) were obtained from the abductor digiti minimi muscle using transcranial magnetic stimulation. The arm was casted and the experimental group then practiced using imagery. After seven days, variable error scores increased. The immobilization treatment decreased MEP scores in both groups, with no difference between groups. It is concluded that limb immobilization produces a decrement in the area of motor cortex dedicated to this muscle as a result of disuse. Imagery failed to ameliorate the disuse-related changes.

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Citations

Dec 6, 2014·Cerebral Cortex·Hana BurianováBlake W Johnson
Jan 25, 2011·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·R FujisawaT Tani
Oct 24, 2013·Experimental Psychology·Aurore MeugnotLucette Toussaint
Jul 31, 2013·Cerebral Cortex·Michela BassolinoLuciano Fadiga
Jun 26, 2007·Journal of Neuroscience Methods·Anita ChristieGary Kamen
Feb 3, 2009·Neurorehabilitation and Neural Repair·Francine MalouinJulien Doyon
Oct 3, 2014·Journal of Neurophysiology·Brian C ClarkJames S Thomas
Apr 28, 2021·Scientific Reports·Ursula DebarnotSophie Schwartz

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