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. 2016 Mar 9;524(9):1920–1956. doi: 10.1002/cne.23966

Figure 12.

Figure 12

Quantitative data of the synaptic configuration of projection neurons (PNs) in glomeruli DL5 and DM2. A,B: For the DL5–PN profiles, the synaptic configuration of 66 presynaptic sites (PN presynaptic) were evaluated. Presynaptic sites were configured mostly as triads, tetrads, and pentads. Polyadic synapses with more than seven postsynaptic sites for a given presynaptic site were exceptions: only four cases were found with seven partners. C,D: Quantitative measurements for PN profiles in the DM2 glomerulus. Comparison of synaptic configurations of DM2–PN output sites (PN presynaptic) and DM2–PN input sites (PN postsynaptic). The most frequent configuration of presynaptic sites of DM2–PNs was triads and tetrads. Between 18% and 9% of DL5–PNs and DM2–PNs, respectively, are postsynaptic to profiles with elongated synapses (contacting more than seven postsynaptic sites). Numbers indicate the amount of synapses of each synaptic configuration.