Figure 6.

Evidence for spike patterns in monkey area MT in vivo (Buracas et al., 1998). A, Rastergram response of MT cells during passive viewing of an alternating sequence of moving Gabor patches in the preferred and anti-preferred directions. Arrows mark spike times when a reliable event was detected. Two sections of this rastergram are indicated by dashed boxes and are reproduced in B (left box) and D (right box). C, E, Corresponding reorderings of these two sections according to the fuzzy clustering algorithm (see Materials and Methods) that was run for K = 2, f = 2 (C; average D = 3.5) and K = 5, f = 2 (E; average D = 3.0). Horizontal dashed lines in C and E separate the different clusters.