Fig. 5.

Degree of the relative γ band coherence, expressed in ς for musicians relative to non-musicians at different states: eyes open (dotted line), eyes closed (dash–dot line), listening to music (solid line), and listening to text (dashed line), respectively. The two horizontal lines denote the level of significance (p < 0.01). No significant differences are evident between the two groups. Coherence is slightly but not significantly increased in musicians while listening to music.