Figure 6.
Mapping thalamic inputs to corticocollicular neurons. A, Schematic diagram illustrating the dual injections of an AAV virus expressing ChR-2 in the MGB and red retro-beads into the IC. B, Average excitatory and inhibitory current across all recorded cells (n = 5 per layer) elicited by stimulation of thalamocortical afferents. *p < 0.05 (Mann–Whitney U test). **p < 0.01 (Mann–Whitney U test). Error bars indicate SD. C1, Excitatory thalamic input map from a layer 5 corticocollicular neuron. C2, Inhibitory disynaptic (or polysynaptic) thalamic input map from a layer 5 corticocollicular neuron. C3, Excitatory thalamic input map from a layer 6 corticocollicular neuron. C4, Inhibitory disynaptic (or polysynaptic) thalamic input map from a layer 6 corticocollicular neuron. In all cases, traces from individual stimulation sites shown in a–c, which correspond to locations denoted on the adjacent heat maps. Colorbars indicate F statistic.