Fig. 3.

Pre-stimulus activity during the inter-trial interval (ITI) in posterior parietal cortex (PPC) predicts the upcoming choice. a Two-photon calcium image of PPC neurons. b Trial-average activity of PPC choice-selective neurons for preferred vs. non-preferred choice trials. Each row represents the normalized activity of a single neuron sorted by its peak activity timing. c Fraction of neurons (mean ± s.e.m.) with significant choice selectivity (p < 0.01 with Bonferroni correction) in 9 non-overlapping 1-s epochs out of all choice-selective neurons. d Example PPC neurons that are choice selective during the ITI