Long distance gamma (28-48 Hz) coherence decreases under cognitive load in drug free euthymic patients with bipolar disorder - Özerdem, Ayşegül; Güntekin, Bahar; Atagün, Murat İlhan; Turp, Bilge; Oral, Esat Timuçin; BAŞAR, EROL (Wiley-Blackwell Publishing, Inc, Commerce Place, 350 Main St, Malden 02148, Ma USA, 2010)