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. Author manuscript; available in PMC: 2011 Sep 23.
Published in final edited form as: J Neurosci. 2011 Mar 23;31(12):4636–4649. doi: 10.1523/JNEUROSCI.6511-10.2011

Figure 12. Sources of modulation of motor cortex neurons.

Figure 12

The bottom panels in A and B show the combinations of inputs from different limb controllers influencing forelimb and hindlimb populations of motor cortex neurons, respectively. FR, FL and HR, HL are the controllers of right and left forelimbs and hindlimbs, respectively. Each cross indicates input from the corresponding controller to the neurons of left motor cortex. In the upper panels, the height of the bars indicates the percentage of left motor cortex neurons with a given combination of inputs. Five functional groups of forelimb neurons (F1-F5) and five functional groups of hindlimb neurons (H1-H5) were found. For each of these groups, the contribution of different subgroups of neurons (termed as in Tables 1 and 2) is indicated by dividing the bar into corresponding parts. For each group of neurons, the proportion of antidromically identified neurons (PTNs) is shown by the thick vertical line near the bar.