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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.
Major depressive disorder (MDD), also known as clinical depression, is a mental disorder [ 9 ] characterized by at least two weeks of pervasive low mood, low self-esteem, and loss of interest or pleasure in normally enjoyable activities. Introduced by a group of US clinicians in the mid-1970s, [ 10 ] the term was adopted by the American ...
The researchers hope that further scans and study could help shed light on conditions like postnatal depression, pre-eclampsia, brain ageing and why pregnancy can reduce migraines. Show comments ...
Psychiatry, Behavioral sciences, Neurology, Radiology. Helen S. Mayberg (born 1956 in California), is an American neurologist. Mayberg is known in particular for her work delineating abnormal brain function in patients with major depression using functional neuroimaging. [1][2] This work led to the first pilot study of deep brain stimulation ...
Depression after a traumatic brain injury, such as a concussion, may be a distinct condition, different from other types of depression. ... The studies included scans from people with and without ...
A study found that teen girls' brains aged 4.2 years faster than average during the pandemic. They might be at higher risk for anxiety and depression.
Cortical spreading depression (CSD) or spreading depolarization (SD) is a wave of electrophysiological hyperactivity followed by a wave of inhibition. [1] Spreading depolarization describes a phenomenon characterized by the appearance of depolarization waves of the neurons and neuroglia [ 2 ] that propagates across the cortex at a velocity of 1 ...
Multiple sclerosis. Multiple sclerosis is a chronic demyelinating disease in which the myelin sheaths of cells in the brain and spinal cord are irreparably damaged. Symptoms of depression are very common in patients at all stages of the disease and may be exacerbated by medical treatments, notably interferon beta-1a.
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