Search results
Results from the WOW.Com Content Network
Anoxic depolarization in the brain. Anoxic depolarization is a progressive and uncontrollable depolarization of neurons during stroke or brain ischemia in which there is an inadequate supply of blood to the brain. [1] Anoxic depolarization is induced by the loss of neuronal selective membrane permeability and the ion gradients across the ...
Biology of depression. Scientific studies have found that different brain areas show altered activity in humans with major depressive disorder (MDD), [1] and this has encouraged advocates of various theories that seek to identify a biochemical origin of the disease, as opposed to theories that emphasize psychological or situational causes.
Brain injury as a result of oxygen deprivation either due to hypoxic or anoxic mechanisms are generally termed hypoxic/anoxic injuries (HAI). Hypoxic ischemic encephalopathy ( HIE ) is a condition that occurs when the entire brain is deprived of an adequate oxygen supply, but the deprivation is not total.
Psychiatry. Mental disorders diagnosed in childhood can be neurodevelopmental, emotional, or behavioral disorders. These disorders negatively impact the mental and social wellbeing of a child, and children with these disorders require support from their families and schools. Childhood mental disorders often persist into adulthood.
Base rates and prevalence. About 8% of children and adolescents suffer from depression. [7] In 2016, 51% of students (teens) who visited a counseling center reported having anxiety, followed by depression (41%), relationship concerns (34%) and suicidal ideation (20.5%). [8] Many students reported experiencing multiple conditions at once.
Effects of stress on memory. The effects of stress on memory include interference with a person's capacity to encode memory and the ability to retrieve information. [1][2] Stimuli, like stress, improved memory when it was related to learning the subject. [3] During times of stress, the body reacts by secreting stress hormones into the bloodstream.
Woman portraying the emotion of stress. Mental distress or psychological distress encompasses the symptoms and experiences of a person's internal life that are commonly held to be troubling, confusing or out of the ordinary. Mental distress can potentially lead to a change of behavior, affect a person's emotions in a negative way, and affect ...
Long-term depression. In neurophysiology, long-term depression (LTD) is an activity-dependent reduction in the efficacy of neuronal synapses lasting hours or longer following a long patterned stimulus. LTD occurs in many areas of the CNS with varying mechanisms depending upon brain region and developmental progress. [1]