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 new study reports air evacuations may pose a significant added risk for people with TBI as they could potentially cause more damage.
The common myth that Anne Boleyn tried to speak after her untimely demise at the hands of her executioner may have scientific evidence behind it. Researchers explore how consciousness may remain intact for a period of time after death, and what that may mean for medical sciences.
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.
A number of patients in intensive care units for non-brain-related illnesses may suffer from cognitive dysfunction. Inflammation that occurs as a result of infection and problems with oxygen flow to the brain which occur when breathing is affected, could contribute to cognitive impairments.
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.
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.