Variant Target Effects on Motor Learning With M1 Anodal tDCS

Unlike many previous studies, stimulation of M1 with a-tDCS did not accelerate learning of a dart-throwing task when the targets were constantly changed. It is hypothesized that this could have been due to the stimulation intensity being too high and possibly having a counter-regulatory effect on cortical activity, or it could have been due to some other learning mechanism that requires more time and practice to develop when the endpoint or target of the task changes. Alternatively, this task may have benefited from stimulation of the cerebellum, where it is known that motor adaptation can efficiently update and improve movements.