Figure 1.

The experimental design. (Left) Single-unit recording. We conducted an extensive mapping of neuronal responses in A36 and TEav. Recorded neurons were classified into picture-selective neurons (red circles) and nonselective neurons (gray crosses). The picture-selective neurons in A36 were localized in the hotspot (yellow). (Right) Injection of retrograde tracers. Retrograde tracers were injected into the hotspot (hotspot injection) and adjacent control regions (control injections 1 and 2) in A36. Then, the distribution of retrograde labels in TEav was compared with the distribution of recorded neurons.