Fig. 2.

Phase-locking analysis, demonstrating greater synchrony between prefrontal and temporal cortical regions for repeated vs. novel visual objects. (a) T test on PLVs across subjects from 8–40 Hz and 0–500 ms after stimulus for repeated (fourth presentation) vs. novel trials, demonstrating significant differential phase synchrony concentrated in the low β frequency band (≈12–14 Hz). (b) PLV time course at 14 Hz, indicating significantly greater phase locking for repeated vs. novel trials 190–270 ms after stimulus onset.