Fig. 2

Quantifying spatiotemporal receptive fields in the LGN and PGN. a–c Spatio–temporal receptive fields estimated by reverse correlation of spikes to Gaussian white noise shown as a series of snapshots (two-dimensional spatial maps) obtained at different latencies for an example cell in the LGN (a), a monocular cell in the PGN (b), and a binocular cell in the PGN (c). d–f Quantification of the spatial scale of each map (STA) by estimating its “footprint”. Z-scores were estimated for each stixel in the STA by bootstrap resampling. d Snapshot of an example STA and its corresponding Z-score map. e Z-scores for two example stixels (outlined in green and orange in d) computed with the bootstrap. Color-coded bars indicate the actual STA value (effectively, stimulus contrast) of the stixel, the gray histograms plot the bootstrapped STA values for each stixel, and the black curves show the Gaussian fit of the distribution. The Z-scores were used for subsequent Benjamini–Hochberg multiple-hypothesis testing to determine significant regions of each STA. f Time-collapsed spatial map of all significant stixels form the “footprint” used to quantify the spatial scale of the receptive field