Figure 3.

Simultaneous mapping of PV+ inputs to four PCs. Four PCs in somatosensory cortex layer 2/3 were patched and the surrounding PV+ interneurons in four different focal planes were optically stimulated. Each column shows the result of mapping the GFP-labeled PV+ interneurons for each of the four PCs. Each row shows the result from a different focal plane, with the projection of all the focal planes in the top row. Connected PV+ interneurons are circled in red, unconnected PV+ interneurons are circled in gray, and PV+ interneurons at which a direct stimulation of the patched PC occurred are circled in black.