Fig. S1. Task design and performance features.

Fig. S2. Example of spike waveforms of the units in the corresponding microelectrodes.

Fig. S3. Examples of recorded spike waveforms with signal-to-noise ratio (S/N) and resulting inter-spike interval (ISI) distributions.

Fig. S4. Spatial distribution and preferred directions (PDs) for primary motor cortex (M1) view neurons.

Fig. S5. Preferred direction (PD) rotations between the do and view conditions projected into reach workspace.

Fig. S6. Comparison of correlation coefficients (CCs) and standard errors (±SEs) of neural firing between the do and view conditions.

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