Figure 4: Power spectrum density of central brain area of spastic cerebral palsy children (C3 C4) in control group without repetitive transcranial magnetic stimulation therapy and only with activities of daily living. (a) Prealpha wave. (b) Postalpha wave. (c) Prebeta wave. (d) Postbeta wave. (e) Pretheta wave. (f) Posttheta wave. (g) Pregamma wave. (h) Postgamma wave