Topological Reorganization of Odor Representations in the Olfactory Bulb
(A) Three-dimensional MC activity patterns evoked by three odors in successive 256-ms time bins (n = 131 MCs). Sphere size represents TDCa signal amplitude between 1 and 5 (arbitrary units); dots depict MCs with TDCa signals less than 1. Arrows indicate foci of MC activity during early time bins. Distance between ticks is 50 μm on all axes. Orientation is as indicated: anterior to posterior (A–P), medial to lateral (M–L), and dorsal to ventral (D–V).
(B) Three-dimensional IN activity patterns evoked by the same odors in successive 256-ms time bins (n = 1,612 INs). Sphere size depicts TDCa signal between 2 and 10 (arbitrary units); dots depict INs with TDCa signals less than two. Distance between ticks is 50 μm on all axes.