Cover Picture: Carbachol-induced propagating oscillatory network activity recorded in vitro with three extracellular electrodes in the intact cerebral cortex preparation of a newborn rat. The three recording sites are marked in the photograph of a lateral view of the right cortical hemisphere. The lower graph shows a color-coded frequency spectrogram (wavelet analysis) of the upper extracellular recording (blue). See Kilb and Luhmann, pp. 409-421.
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