Both Sides of the Brain Are Active During One-Sided Arm Movement

Researchers directly recorded neural activity in both sides of the brain's cortex during the movement of only one arm in humans. When you move only your right arm, there’s neural activity in both the left and right sides of the brain, researchers report in The Journal of Neuroscience.

“The study shows directly a relationship between the activity in the primary motor cortex and arm movement on the same side of the body, and is another piece of the puzzle that demonstrates that the primary motor cortex on the same side as the muscle plays a role in movement of the upper limbs,” says Cathrin M. Buetefisch, a neurology professor at the Emory University School of Medicine who works on neurorehabilitation.

Dr. Buetefisch is a NS faculty member.

Click here to view the full story in The Scientist.