Figure 1. Connectivity and directionality of lateral transmission between mitral cells.

A (top), example recordings performed in current clamp from a pair of mitral cells projecting to the same glomerulus. Evoking a single AP in cell A (top left) can result in a detectable depolarization in cell B (top right). For the same pair an AP in cell B failed to evoke detectable lateral transmission (bottom). B, pie charts showing the overall connectivity and directionality of lateral transmission across 99 pairs of mitral cells (198 possible connections).