Table 1.

Regional rat brain tissue partial pressures of oxygen measured by microelectrode

Brain area	% O2
Cortex (gray)	2.5–5.3
Cortex (white)	0.8–2.1
Hypothalamus	1.4–2.1
Hippocampus	2.6–3.9
Pons, fornix	0.1–0.4

Adapted from Silver and Erecinska, 1988.