Motor Cortical Networks for Skilled Movements Have Dynamic Properties That Are Related to Accurate Reaching
Figure 3
Illustrations of excitatory (red, top row) and inhibitory (blue, bottom row) functional connectivity among 15 ensemble MI neurons (Dataset-3) recorded from the left cerebral hemisphere of one of the animals during the background (a) and reaching (b) stages of successful task trials. Circles and squares represent the RS and FS cells, respectively. Uni- or bidirectional arrow indicates directional statistical dependence between cells, with solid/dashed lines representing excitatory/inhibitory connections. The numbers above each panel of connectivity maps indicate the different spiking history windows that were selected to detect the associations. Note the significant increase in both inhibitory and excitatory spiking associations that occurred during reaching when compared with background, and different pairs of neurons are involved in functional interactions during different behavioural conditions.
