Fig. 7.

Averages of simultaneously recorded HVSs (A) and sleep spindles (B) in different layers at the same electrode position. C, One-dimensional CSD depth profiles of the spike and wave components of HVSs and corresponding surface-negative and surface-positive components of sleep spindles (continuous and dashed lines, respectively). Note the similar position but different magnitude of sinks and sources during the two different patterns.a1, a2, Spike and wave components of HVSs, respectively;b1, b2, surface-negative and surface-positive components of sleep spindle, respectively.