Researchers directly measured oxygen levels in an intact brain and correlated it with neural activity. During normal activity, only 50% of oxygen is used for neural activity, the remaining 50% is required for glial cells and maintaining the metabolic rate of other nerve cells.
According to UT Dallas researchers, chronic cannabis users extract more oxygen from brain blood flow and have higher cerebral blood flow than nonusers.
Cognitive challenges trigger a slight oxygen deficit in hippocampal pyramidal neurons. This increases the production of erythropoietin (Epo) and its receptors in the active neurons, stimulating neighboring precursor cells to form new neurons and enhancing connectivity.
A lack of oxygen as a result of preterm birth does not cause hippocampal neurons to die but does impair hippocampal development. Hypoxia causes hippocampal cells to fail to mature normally, causing a reduction in long-term potentiation and impaired learning.
According to a new study, poor physical fitness in middle age may be linked to lower brain volume in later life.
Ischemic preconditioning may help to prevent stroke, a new study reports. Restricting blood flow by wearing inflatable blood pressure cuffs on the arms and legs allows for more controlled blood flow to the brain.
Researchers have discovered how the brain controls our breathing in response to changing oxygen and carbon dioxide levels in the blood.
A new study reports air evacuations may pose a significant added risk for people with TBI as they could potentially cause more damage.
Pregnant women exposed to nitrates through household drinking water had, on average, babies that weighed ten grams less than women with no exposure to nitrates in drinking water. High levels of nitrate in tap water can cause infant methemoglobinemia, a fatal condition in newborns.