Coding of the Reach Vector in Parietal Area 5d

摘要: Competing models of sensorimotor computation predict different topological constraints in the brain. Some propose population coding particular reference frames anatomically distinct nodes, whereas others require no such dedicated subpopulations and instead that regions will simultaneously code multiple, intermediate, frames. Current empirical evidence is conflicting, partly due to difficulties involved identifying underlying Here, we independently varied locations hand, gaze, target over many positions while recording from dorsal aspect parietal area 5. We find represented a predominantly hand-centered frame here, contrasting with relative seen premotor cortex mostly gaze-centered reach region. This supports hypothesis nodes circuit contain systematic representations, this constrains types computational model are neurobiologically relevant.