Levels of EEDS activity in the suprachiasmatic nucleus (SCN) area in patients with different grades of scoliotic spine deformation and in healthy subjects. The  -axis shows mean number of dipole sources in suprachiasmatic nucleus (SCN) area (% of total recorded). The -axis shows (0) healthy subjects and patients with different grades (I, II, III, IV) of idiopathic scoliosis severity. Vertical bars denote 0.95 confidence intervals.