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Upper limb loss is a big disaster and markedly affects the quality of life. Bidirectional peripheral neural interface (PNI) is a feasible way to restore the sensorimotor functions of amputees. Bidirectional interface includes motor commands decoding and sensory feedback restoring. In this paper, we presented two neurobehavioral platforms for studying bidirectional PNI in the monkey. In the first platform,...
We recorded neural activities in dorsal premotor areas (PMd) when monkey was preparing to perform arm reaching movements in motor-set period before his actual execution. He was required to select one of four possible movements (reaching a target on the top-left or top-right corner of a virtual cube, moving straightly or making a detour) in accordance with two sets of instruction cues. Among the neurons...
We recorded neural activities in dorsal premotor areas (PMd) when monkey was preparing to perform arm reaching movements in motor-set period before his actual execution. He was required to select one of four possible movements (reaching a target on the top-left or top-right corner of a virtual cube, moving straightly or making a detour) in accordance with two sets of instruction cues. Among the neurons...
The activity of 979 motor cortical cells was recorded in a monkey trained to reach and grasp one of two targets oriented at various angles. 568 cells were found to be task-related and further classified. Among them, 24% correlated only with target orientations which determined hand orientation, 18% correlated only with target location (movement direction), 24% correlated with both target orientations...
The activity of 979 motor cortical cells was recorded in a monkey trained to reach and grasp one of two targets oriented at various angles. 568 cells were found to be task-related and further classified. Among them, 24% correlated only with target orientations which determined hand orientation, 18% correlated only with target location (movement direction), 24% correlated with both target orientations...
A brain-computer interface (BCI) system such as a cortically controlled robotic arm must have a capacity of adjusting its function to a specific environmental condition. We studied this capacity in non-human primates based on chronic multi-electrode recording from the primary motor cortex of a monkey during the animal's performance of a center-out 3D reaching task and adaptation to external force...
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