Fig. 8: Measuring spike–timing correlations from unit crosscorrelation via high-density recording.
From: Large-scale high-density brain-wide neural recording in nonhuman primates
a, Jitter-corrected CCGs of four example pairs of neurons exhibiting significant correlations in spike timing. 7x STD, 7 × standard deviation of CCG flank. b, Diagram of functionally connected neuron pairs from one example session, with neurons ordered by depth along the probe. c, Distribution of signal correlation for pairs of neurons with different CCG types in the visual cortex. Group means were compared using bootstrapping between nonsignificant pairs and significant, synchronous pairs (P < 10−4), between nonsignificant pairs and significant, asynchronous pairs (P < 10−4) and between synchronous and asynchronous pairs (P < 10−4). d, Relationship between signal correlation and peak value of CCG. e,f, Example putative connected cell pair identified using two probes in area AF (e) and ML (f) with putative feedforward connection. g,h, Example putative connected cell pair identified using two probes in area ML (g) and AF (h) with putative feedback connection. i, The population of functionally connected cells between AL and MF regions dominated by cells that respond to faces.
