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Cohort sizes after attrition.
| Group | CBF MRI | CVR MRI | IHC total | Overlap between MRI and IHC | Electrophysiology | 2PFM |
|---|---|---|---|---|---|---|
| Repeated CHI (n=19) | 5 | 6 | 5 | 2 | 4 | 4 |
| Sham (n=17) | 5 | 5 | 5 | 4 | 4 | 4 |
2PFM: 2-photon fluorescence microscopy; CBF: cerebral blood flow; CHI: closed head injury; CVR: cerebrovascular reactivity; IHC: immunohistochemistry; MRI: magnetic resonance imaging
