Reduced neural representation of arm/hand actions in the medial posterior parietal cortex.

ABSTRACT: Several investigations at a single-cell level demonstrated that the medial posterior parietal area V6A is involved in encoding reaching and grasping actions in different visual conditions. Here, we looked for a "low-dimensional" representation of these encoding processes by studying macaque V6A neurons tested in three different tasks with a dimensionality reduction technique, the demixed principal component analysis (dPCA), which is very suitable for neuroprosthetics readout. We compared neural activity in reaching and grasping tasks by highlighting the portions of population variance involved in the encoding of visual information, target position, wrist orientation and grip type. The weight of visual information and task parameters in the encoding process was dependent on the task. We fou

SUBMITTER: Bosco A 

PROVIDER: S-EPMC6353970 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature