According to UT Dallas researchers, chronic cannabis users extract more oxygen from brain blood flow and have higher cerebral blood flow than nonusers.
Researchers have developed a new urine test that could potentially measure how much our bodies have aged. The test measures a substance that indicates oxidative damage, which increases in urine as we age.
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.
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.
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.
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.
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.