Figure 7
ROI analysis comparing neural responses elicited by ascending trains of quasi-steady-state auditory stimuli between nonmusicians and musicians.
Left panel: The scalp topographies, measured from the corresponding ROIs of evoked TFDs (ROI1) and PLVs (ROI2 and ROI3; outlined in Fig. 6), are displayed from top to bottom for nonmusicians (left) and musicians (right) respectively. Right panel: Statistical t values and corresponding null distributions within the ROIs of evoked TFDs (ROI1) and PLVs (ROI2 and ROI3) are displayed from top to bottom. Null distributions were generated from 5000 random permutations from all datasets. Statistical t values are indicated by vertical red lines. Within ROI1, permutation tests showed that the t value of the comparison of evoked TFDs between nonmusicians and musicians was significantly different from chance level (P = 0.001). Within ROI2 and ROI3, permutation tests showed that the t values of the PLV comparisons between nonmusicians and musicians were significantly different from chance level (P = 0.007 and P = 0.002 respectively).
