Fig. 4.

Mixed excitatory and inhibitory responses following photostimulation of the IC. (A) Photostimulation sites in the IC and recording locations, as shown in a photomontage of the slice. Grid in IC indicates photostimulation sites in B. (B) Responses of the MGB neuron following photostimulation of the IC. (C) Recorded stellate MGB neuron labeled with biocytin. (D) Traces in boxed region in B at higher magnification. (E) Mean amplitude of photostimulation responses. (Scale bars: B, 80 μm; C, 100 μm.)