Figure 1.

Thermal map of the brain. The results of measurements of the temperature difference between arterial blood and 100 brain and subarachnoid sites in 16 monkeys during 347 experiments. Values expressed are T_i–T_a temperature of intracranial site minus the temperature of the aortic arterial blood measured simultaneously, and are all positive values). The major regions which have been studied in the primate brain have been placed on two representative frontal sections, A, frontal 14.5 and B, front 0.3. Values are expressed to the nearest 0.1 C. Reprinted with permission from The American Journal of Physiology, Hayward and Baker (1969).