ABOVE: Artistic rendering of the locations and encoding strength (increasing from white to red) of neural activity recorded from electrodes on human subjects' brains.
DAVID BUNDY AND ERIC LEUTHARDT
When you move only your right arm, there’s neural activity in both the left and right sides of the brain, researchers report today (October 8) in The Journal of Neuroscience.
Recent animal and human studies have hinted that moving muscle on only one side of the body resulted in neural activity from the same side—or ipsilateral—part of the brain. But the data haven’t been convincing enough to completely erase the idea that only the left side of the brain is responsible for movement on the right side of the body or vice versa. The new study shows the ipsilateral brain activity encodes detailed arm movement information including position, speed, and velocity. The results could one day be used to help improve recovery ...
