Table 3.
Postsynaptic targets of in vivo recorded nonpyramidal projection neurons
| Cell no. | Cell type | Soma | Hippocampal axon | Axonal targets in the CA1 area |
|||
|---|---|---|---|---|---|---|---|
| Nos. of synapses testeda | Postsynaptic targets (%) |
||||||
| Pyramidal cell | Interneuron | Unidentified | |||||
| T87c | double-projection | CA1so | CA1so, sp, sr | total (25) | 68 | 24 | 8 |
| so (13) | 54 | 38 | 8 | ||||
| sp, sr (12) |
83 |
8 |
8 |
||||
| C25a | double-projection | CA1so | CA1so, sp, sr | total (16) | 88 | 6 | 6 |
| so (10) | 90 | 0 | 10 | ||||
| sp, sr (6) |
83 |
17 |
0 |
||||
| D150 | double-projection | CA1so | CA1so, sp, sr | total (39) | 69 | 21 | 10 |
| so (18) | 67 | 28 | 5 | ||||
| sp, sr (21) |
71 |
14 |
14 |
||||
| P13c | double-projection | CA1so | CA1so, sp, sr | total (15) | 93 | 0 | 7 |
| so (3) | 100 | 0 | 0 | ||||
| sp, sr (12) |
92 |
0 |
8 |
||||
| T80a | oriens-retrohippocampal | CA1so | CA1so, sp, sr | total (36) | 83 | 8 | 8 |
| so (12) | 83 | 8 | 8 | ||||
| sp, sr (24) |
83 |
8 |
8 |
||||
| K98c | oriens-retrohippocampal | CA1so | CA1so, sp, sr | total (11) | 100 | 0 | 0 |
| so (4) | 100 | 0 | 0 | ||||
| sp, sr (7) |
100 |
0 |
0 |
||||
| C11c | double-projection | CA3sp | CA1sp, sr, CA3so, sp, sr | sp, sr (12) | 83 | 0 | 17 |
aNumbers in parentheses denote the number of postsynaptic cellular profiles that were tested with electron microscopy.