Fig. 2From: Different vulnerability of fast and slow cortical oscillations to suppressive effect of spreading depolarization: state-dependent features potentially relevant to pathogenesis of migraine auraDepression of spontaneous cortical activity induced by unilateral SD in awake rats. Typical recordings of dc potential (A), filtered ECoG (B) and spectrogram (C) of the 800-s fragment obtained in homotopic sites of the right (Cx, R) and left (Cx, L) occipital cortex of the two hemispheres immediately after a focal microinjury of the right amygdala (marked by red dashed line at the onset of recordings). Calibration bars – 2 mV (A) and 0.2 mV (B). The time scale is the same in A, B, C and shown below the spectrogram. A single SD event (dc shift) appeared in the right occipital cortex in 150 s after its initiation in the amygdala (A) and induced mild suppression of ipsilateral ECoG amplitude (B, C)Back to article page