Fig. 7: Preference-independent saliency encoding in the sSC does not require cortical inputs.
From: Preference-independent saliency map in the mouse superior colliculus
a Two examples and the summary of visually evoked neuronal responses in V1 before and after muscimol injections. Gray shade indicates the SD across 5 trials. Blue and red arrows mark the onset and offset of visual stimuli, respectively. Red lines indicate the baseline activity without visual stimulation. Scales: 30% ΔF/F0, 0.5 s. N = 15 neurons. b Violin plots for the difference in response amplitudes evoked by SFGs with preferred and orthogonal backgrounds for saliency-encoding neurons across different levels of orientation selectivity after cortical silencing. The means of the three groups are the same: one-way ANOVA, p = 0.19 for excitatory neurons, N = 84, 74, 50; p = 0.41 for inhibitory neurons, N = 163, 156, 112. c SI of excitatory and inhibitory neurons in the sSC without versus with cortical inputs. Exc: 0.18 ± 0.30 vs. 0.26 ± 0.23, N = 208; Inh: 0.18 ± 0.29 vs. 0.24 ± 0.23, N = 431. Black dashed lines indicate the identity line. Error bars represent standard deviation. Top and right insets: histograms of SI with and without cortical inputs. Black dashed lines mark SI = 0. Percentage values indicate the proportion of neurons with SI > 0.
