Postsynaptic targets as determined by electron microscopy from random samples of boutons
| Postsynaptic targets | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pyramidal cell | Granule cell | |||||||||
| Cell | Type | Area | Number of synapses | Soma | Dendrite | Spine | IN | Dendrite | Spine | |
| Apical | Small | |||||||||
| T64c | Basket | or., pyr., rad. | 11 | 64% | 9% | 27% | 0% | 0% | ||
| T147a | Basket | or., pyr., rad. | 17 | 47% | 12% | 41% | 0% | 0% | ||
| T152b | Basket | or., pyr., rad. | 12 | 50% | 8% | 42% | 0% | 0% | ||
| T46d | ap.d. inn. | Total | 29 | 10% | 45% | 24% | 4% | 17% | ||
| pyr., prx. rad. | 18 | 17% | 61% | 22% | 0% | 0% | ||||
| dist.rad. | 11 | 0% | 18% | 27% | 9% | 46% | ||||
| T159a | ap.d. inn. | Total | 42 | 7% | 26% | 57% | 0% | 10% | ||
| pyr., prx. rad. | 19 | 16% | 42% | 37% | 0% | 5% | ||||
| dist.rad. | 14 | 0% | 21% | 64% | 0% | 14% | ||||
| or. | 9 | 0% | 0% | 89% | 0% | 11% | ||||
| T82e | Perf.p.as. | Total | 38 | 0% | 3% | 55% | 5% | 11% | 21% | 5% |
| rad. | 10 | 0% | 10% | 80% | 0% | 10% | ||||
| lac-mol. | 17 | 0% | 0% | 76% | 12% | 12% | ||||
| dentate gyr. | 11 | 9% | 73% | 18% | ||||||
| T123b | Perf.p.as. | Total | 36 | 0% | 14% | 80% | 0% | 6% | ||
| or. | 10 | 0% | 0% | 100% | 0% | 0% | ||||
| rad. | 12 | 0% | 25% | 75% | 0% | 0% | ||||
| lac-mol. | 14 | 0% | 14% | 72% | 0% | 14% | ||||
Main targets are in boldface. IN, Interneuron; ap.d. inn., apical dendrite-innervating cell; Perf.p.as., perforant-path-associated cell; or., stratum oriens; pyr., stratum pyramidale; rad., stratum radiatum; prx. and dist. rad., proximal and distal stratum radiatum; lac-mol., stratum lacunosum moleculare; dentate gyr., dentate gyrus.