Only few studies have assessed the effects of group music
therapy, especially using EEG in patients with schizophrenia. In the
present study, we found that the relative power of a waves from
prefrontal, frontal, temporal, and parietal sites in the experimental
group were significantly higher than those of the control group.
Yang et al. (2012) also reported that EEG a waves in patients with
schizophrenia and depression was significantly activated through
listening to music. Fachner et al. (2013) also observed that after listening to music, a wave of patients with depression significantly increased from the areas of the frontal and temporal lobes, which was consistent with the findings of the present study. These additional studies partially coincided with our results where a waves from all areas increased after the group music therapy. Alphawaves are in the frequency range of 8e12 Hz, arising through brain activity
associated with being in a comfortable and relaxed or concentrated state