Figure 3. Electrical coupling is ubiquitous and reciprocal among intraglomerular mitral cells.

A (top), example reconstructions of a morphologicaly defined pair of mitral cells. Bottom, example average traces (20 sweeps) recorded in current clamp showing bi-directional electrical coupling assessed by hyperpolarizing pulses in each cell. B, histogram showing the distribution of coupling coefficients for 133 connections (filled bars) and 4 non-pairs (open bars). C, plot showing the lack of correlation between electrical coupling and lateral transmission.