Fig. 9: Changes in the PD of individual PMdc and M1 neurons during TTR training sessions. | Nature Communications

Fig. 9: Changes in the PD of individual PMdc and M1 neurons during TTR training sessions.

From: Dynamics of directional motor tuning in the primate premotor and primary motor cortices during sensorimotor learning

Fig. 9

Histograms of the PDI of the pursued neurons in the early (left) and late (middle) sessions and ΔPDIEL (right) in PMdc (a) and M1 (b) neurons. Only pursued neurons that were pull-related and/or push-related in both early and late sessions were included in this analysis. c |ΔPDIEL| of the PMdc (brown, n = 85) or M1 (red, n = 120) neurons shown in (a) or (b), respectively. Data are presented as mean ± SEM. *P < 0.05. Wilcoxon rank-sum test, two-sided. P value between |ΔPDIEL| of the PMdc and M1 was 0.0220. d Field-averaged ΔPDIEL of PMdc against the field-averaged PDI of PMdc in early (left) and late (right) sessions. The different colors indicate different animals (marmosets 1–6). Circles and triangles indicate one-photon and two-photon imaging fields, respectively. C.C. and P values were calculated with Pearson’s correlation coefficients, two-sided. e SRpush in early sessions plotted against the field-averaged PDI of PMdc in early sessions. C.C. and P values were calculated with Pearson’s correlation coefficients, two-sided. f, g |ΔPDIpair| for pairs of pursued neurons in PMdc (f) and M1 (g) plotted against the cellular distance in the early (open symbols) and late (closed symbols) sessions. Neurons that were pull-related and/or push-related in early and late sessions were used in the calculation of |ΔPDIpair| for early and late sessions, respectively. Data are presented as mean ± SEM. *P < 0.05, Wilcoxon rank-sum test comparing |ΔPDIpair| between early and late sessions, two-sided. h Weights of the bias term and six task performance-related variables in the task performance model to explain |ΔPDIpair|<300 μm. *P < 0.05, permutation test, two-sided. Source data are provided as the Source Data file.

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