Figure 4.

Orientation selectivity. A, Histogram of OSI for all responsive units (n = 182), with gray and black representing proportion of putative excitatory (exc) and inhibitory (inh) units. Arrows show values for units in Figures 2 and 3. B, Comparison of preferred orientation angle (degree) as measured with bars and gratings demonstrates consistency. C, Histogram of mean tuning width for all orientation-selective units (n = 135). Arrow shows value for unit in Figure 2. D, Orientation selectivity by layer and cell type. E, Mean OSI for each layer and cell type. F, Median width of orientation tuning for all oriented units by layer.