Excitability of spinal neural function during motor imagery in Parkinson's disease.

Excitability of spinal neural function during motor imagery in Parkinson's disease. Funct Neurol. 2014 Oct-Dec;29(4):263-267 Authors: Suzuki T, Bunno Y, Onigata C, Tani M, Uragami S, Yoshida S Abstract the median nerve at the wrist in subjects during two motor imagery conditions: holding and not holding the sensor of a pinch meter between the thumb and index finger. Our aim was to determine whether mental simulation without the muscle contraction associated with motion can increase the excitability of spinal neural function in patients with Parkinson's disease (PD). F-waves of the left thenar muscles were examined in 10 patients with PD under resting, holding and motor imagery conditions. For the holding condition, the subjects held the sensor of the pinch meter between their thumb and index finger. For the motor imagery conditions, the subjects were asked to imagine a 50% maximal voluntary isometric contraction holding and not holding the sensor of the pinch meter between their thumb and index finger (motor imagery "with"/"without sensor"). Persistence during motor imagery under the "with sensor" condition increased significantly compared with persistence during resting (n=10, z=2.2509, p=0.0244, Wilcoxon test). The F/M amplitude ratio during motor imagery under the "with sensor" condition increased significantly compared with that during resting (n=10, z=2.1915, p=0.0284, Wilcoxon test). Excitability of spinal neural function durin...
Source: Functional Neurology - Category: Neurology Tags: Funct Neurol Source Type: research