Fig. 2: High-density neuronal recordings from lateral prefrontal cortex.
From: Intermittent rate coding and cue-specific ensembles support working memory

a, Top, location of recordings in lateral prefrontal cortex. Bottom left, schematic of the Neuropixels NHP probe, highlighting the contiguous block of 384 active channels near the probe tip. Bottom right, spike waveform templates for 480 single and multi-units extracted from a single example recording session in monkey A, shown at their measured location on the probe surface. Units plotted in red showed selectivity for cue location during the delay period. b, Leave-one-trial-out training procedure. For each trial and time point, a classifier was trained on the remainder of trials to discriminate the same cue location as the test trial from the opposite cue location. c, Mean classification accuracies (proportion of trials correct) for cue location from n = 25 sessions, relative to cue onset. Traces indicate individual sessions. d, Mean proportion correct, averaged across the memory delay (+500 to +1,400 ms relative to cue onset) by cue location. Grey traces show individual sessions.