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. 2021 Nov 23;10:e67355. doi: 10.7554/eLife.67355

Figure 2. Theta–gamma peak (TGP)-transcranial alternating current stimulation (tACS) enhances motor skill acquisition.

Mean ballistic thumb abduction acceleration for each stimulation condition. Each point represents the mean of 10 trials across participants and the error bars depict the standard error between participants. (A) Experiment 1: during stimulation, TGP significantly increased skill acquisition over the course of the experiment (i.e. acceleration gain), compared to sham and theta–gamma trough (TGT). (B) Experiment 2: when replicated in an independent sample, skill acquisition was again significantly greater in the TGP stimulation group compared with sham. This effect was maintained for at least 75 min after stimulation.

Figure 2.

Figure 2—figure supplement 1. Transcranial alternating current stimulation (tACS) does not modulate behavioural variability.

Figure 2—figure supplement 1.

There was no effect of tACS on variability in terms of acceleration within blocks in either (A) experiment 1 or (B) experiment 2.