Fig. 8
Response dynamics differ with respect to blur selectivity. a, b PSTH of preferred stimuli for low (blue) to high (red) blur factors for sharp-selective and blur-selective cells. a For the sharp-selective cell, increasing blur decreases neuronal response throughout the stimulus presentation interval. b For the blur-selective cell, blur modulation is transient. c, d Blur modulation (y-axis), calculated as the s.d. of responses with respect to blur, for preferred and non-preferred shape stimuli from example cells in a and b. The difference between the blur modulation timecourse (hatching) of preferred and non-preferred shapes captures the period in time at which blur multiplicatively scales shape-selective responses. e, f Average normalized PSTHs demonstrating distinct response dynamics between these cell groups. g The principle value of blur selectivity (Fig. 2e) plotted as a function of the average difference in blur modulation between preferred and non-preferred shape stimuli across the sustained period (200–300 ms; shaded region of e, f). h For each blur factor, mean latency to half-of-maximum response (half-rise time) for each cell group. Error bars denote s.e.m. A significant increase in response latency (t-test, p = 0.036) occurs across cells selective for intermediate blur (PV 0.25) between blur factors 0.16 and 0.64 (arrows)
