Table 2.
Standard deviations (expressed as percent of hippocampal volume) across three datasets.
| Dataset | Absolute volume | Relative to brain volume | ||
|---|---|---|---|---|
| σpopulation | σsubject | σpopulation | σsubject | |
| Ex-vivo high-resolution | 5.0% | 1.1% | 1.7% | 0.99% |
| Ex-vivo low-resolution | 4.8% | 1.3% | 3.0% | 1.0% |
| In-vivo | 4.8% | 3.1% | 2.2% | 1.7% |
The σsubject for the ex-vivo datasets represent variability when scanning the same specimen repeatedly. The volume of the hippocampus in one hemisphere of the mouse brain is approximately 9.9 mm3.