Coronal B-scan ultrasound images at the level of the LPS injection.

(A) Arrow marks injection site. (B) Seeds placement, overlaid a coronal B-scan, averaged over 11 individual B-scans. Abbreviations: M, motor cortex; S1, primary somatosensory cortex; S1BF, barrel field primary somatosensory cortex; LV, Lateral ventricle; CPu, Caudate putamen. Black dotted line indicates Left Cortex ROI used for locoregional SO₂ measurement. White dotted rectangle indicates ROI used for local SO₂ measurement in corpus callosum. Scale bar: 1 mm.