Motor Cortical Networks for Skilled Movements Have Dynamic Properties That Are Related to Accurate Reaching
Figure 4
Two representative examples of estimated GLM coefficients (shown in vertical axis, dimensionless) of cell pair interactions between unsuccessful and successful trials during reaching movement. Positive/negative coefficients represent excitatory/inhibitory effects. Notation denotes the directional spiking dependence from trigger cell to target cell . The shaded areas around the curve indicate the 95% confidence intervals of the estimated coefficients. Only those coefficients whose 95% confidence intervals do not overlap with zero are identified as significant connections. In the two examples displayed (Dataset-1), the cells numbered 3, 8, and 9 were classified as two FS neurons and a RS neuron, respectively. (a) Estimated GLM coefficients using complete () trials. (b) Estimated coefficients averaged from 20 Monte Carlo runs using only half of () trials (shaded bars show the standard error of the mean). (c) Estimated GLM coefficients averaged from 100 Monte Carlo runs using shuffled successful/unsuccessful trial ID.
