(June 29, 2011) Bringing the real world into the brain scanner, researchers at The University of Western Ontario from The Centre for Brain and Mind can now determine the action a person was planning, mere moments before that action is actually executed.
The findings were published this week in the prestigious Journal of Neuroscience, in the paper, “Decoding Action Intentions from Preparatory Brain Activity in Human Parieto-Frontal Networks.”
“This is a considerable step forward in our understanding of how the human brain plans actions,” says Jason Gallivan, a Western Neuroscience PhD student, who was the first author on the paper.
Over the course of the one-year study, human subjects had their brain activity scanned using functional magnetic resonance imaging (fMRI) while they performed one of three hand movements: grasping the top of an object, grasping the bottom of the object, or simply reaching out and touching the object. The team found that by using the signals from many brain regions, they could predict, better than chance, which of the actions the volunteer was merely intending to do, seconds later.