Researchers at the Institute of Automation, Chinese Academy of Sciences report
that macaque primary motor cortex (M1) and dorsal premotor cortex (PMd) contain
explicit three-dimensional representations of hand position. The team found the
brain maintains a GPS-like 3D hand-position map and that just tens of
position-encoding neurons can accurately decode 3D hand trajectories, providing
a neural-science basis for more efficient next-generation brain-computer
interfaces. Results published in Journal of Neuroscience.
