Figure 4.

Comparisons of the relative change index of beta oscillatory activity under each condition of the stroke patients and healthy controls. (a) Stroke patients: the relative change index under the video AOE condition decreased significantly more than those under the observation condition and the affected hand AOE condition. (b) Healthy controls: the relative change index under the video AOE condition was significantly lower than that under the observation condition. Data are presented as the median ± IQR values. Note: AOE = action observation and execution.