Fig. 9.

Prefrontal and parietal ROI analysis. a Anatomical location of each region of interest (ROI). b Mean median HFB amplitude during overt recollection periods and during inter-recall intervals (i.e., presumed memory search periods). Significant differences were found between search and recall in all regions of interest except for the DLPFC (*p < 0.05, FDR corrected). Error bars represent SEM of within electrode differences estimated by the mixed-effects model. c HFB response in each region time-locked to the onset of individual recall events. Note the activation latency of prefrontal regions, which followed the response of category selective electrodes (Fig. 5). Parietal regions on the other hand showed a small transient response anticipating the differential activation of category-selective visual electrodes (dashed blue line). Abbreviations: aVLPFC—anterior ventrolateral prefrontal cortex (~BA10/47); mid-VLPFC—mid-posterior ventrolateral prefrontal cortex (~BA45); DLPFC—dorsolateral prefrontal cortex (~BA8/9); DPC—dorsal parietal cortex (~BA39/7); VPC—ventral parietal cortex (~BA39/40)