Table 3.
Summary of the Ov subdivisions. +++, intense; ++, mediate; +, sparse; −, none; ?, unknown. Abbreviations: see table of abbreviations. $, A projection from ICo upon the Ov proper may exist, requiring further investigation.
| Ov proper |
SPO | SPOc | cOv | |||||
|---|---|---|---|---|---|---|---|---|
| Ovm | Ovdm | Ovdl | Ovvl | Ovvm | ||||
| Mean cell diameter (μm) | 16.4 | 17.7 | 19.3 | 19.8 | 19.7 | 16.0 | 14.9 | |
| Myelinated axons | + | ++ | +++; horizontal |
+ | +++; vertical |
++ | ++ | + |
| α8 subunit nAChR | − | − | − | − | +++; small cells |
− | − | − |
| Astrocyte density | +++ | +++ | + | +++ | + | +++ | + | +++ |
| parvalbumin neuropil | ++ | +++ | +++ | ++ | +++ | + | ++ | + |
| parvalbumin somata | − | ++ | ++ | − | ++ | − | − | − |
| CGRP somata | − | − | − | − | − | +++ | − | +++ |
| CCK somata | − | − | − | − | − | ++ | − | ++ |
| Midbrain inputs$ | NA-recipient MLd | RI-recipient MLd | NL-recipient MLd | ICo | ? | ICo | ||