When brain cells become more active, they require more energy and oxygen, which is delivered through increased blood flow. This process is called functional hyperemia. Problems with functional ...

The rise in brain temperature can lead to ischemic brain injury, hyperemia, exacerbation of cerebral edema, and increased intracranial pressure. A study of 353 patients with SAH has shown that ...

The effective increase in microvessel diameter can also help the injured brain combat hyperemia by allowing blood to flow out of the region (Doyle et al., 2001; Kramer, 2003; Pascual, Khwaja ...