Spike-and-slow-wave complexes. Upper panel: Electroencephalogram (30-sec epoch, low-frequency filter 0.5 Hz, high-frequency filter 100.0 Hz) showing spike-and-slow-wave complexes after lateral fluid-percussion injury. No clear ictal behavior was associated with the activity. Lower panel: A heat map of the same epoch, indicating a typical shift in the band power when transitioning from a spike to a wave. The spike-and-slow-wave complexes were more distinct occipitally (O1, O2) than parietally (C3, C4), where they are mixed with other activities. For a longer period of spike-and-slow-wave complexes, see Supplementary Video S3. Color image is available online.