Spike Code Flow in Cultured Neuronal Networks

Figure 9

Maximum cross-correlation of a pixel with a 5 ms time difference (frame interval). For example, (0.2–0.6) indicates that the “1011” (or “1101”) code with a 0.2–0.6 ms bit width had the maximum cross-correlation with some electrode within 20 neighbors in the next frame. The results are averages of “1011” and “1101.” From (b), we can see that the original train has clearly the code flow characteristic.

(a) Sample A; average of 9 trials

(b) Relative values of (a) (Sample A)

(c) Sample B; average of 23 trials