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  2. Periaqueductal gray - Wikipedia

    en.wikipedia.org/wiki/Periaqueductal_gray

    The periaqueductal gray (PAG), also known as the central gray, is a brain region that plays a critical role in autonomic function, motivated behavior and behavioural responses to threatening stimuli. [1] [2] PAG is also the primary control center for descending pain modulation. It has enkephalin-producing cells that suppress pain.

  3. Biology of depression - Wikipedia

    en.wikipedia.org/wiki/Biology_of_depression

    The biology of depression is the attempt to identify a biochemical origin of depression, as opposed to theories that emphasize psychological or situational causes. Scientific studies have found that different brain areas show altered activity in humans with major depressive disorder (MDD) . [ 1 ]

  4. List of regions in the human brain - Wikipedia

    en.wikipedia.org/wiki/List_of_regions_in_the...

    Brain at the U.S. National Library of Medicine Medical Subject Headings (MeSH) (view tree for regions of the brain) BrainMaps.org; BrainInfo (University of Washington) "Brain Anatomy and How the Brain Works". Johns Hopkins Medicine. 14 July 2021. "Brain Map". Queensland Health. 12 July 2022.

  5. Causes of mental disorders - Wikipedia

    en.wikipedia.org/wiki/Causes_of_mental_disorders

    Any damage to the brain can cause a mental disorder. The brain is the control system for the nervous system and the rest of the body. Without it, the body cannot function properly. [71] Increased mood swings, insane behavior, and substance abuse disorders are traumatic brain injury (TBI) examples. Findings on the relationship between TBI ...

  6. Differential diagnoses of depression - Wikipedia

    en.wikipedia.org/wiki/Differential_diagnoses_of...

    There are many psychiatric and medical conditions that may mimic some or all of the symptoms of depression or may occur comorbid to it. [11] [12] [13] A disorder either psychiatric or medical that shares symptoms and characteristics of another disorder, and may be the true cause of the presenting symptoms is known as a differential diagnosis. [14]

  7. Major depressive disorder - Wikipedia

    en.wikipedia.org/wiki/Major_depressive_disorder

    This article needs to be updated. The reason given is: Many outdated sources and information (older than five years). Please help update this article to reflect recent events or newly available information. (July 2024) Medical condition Major depressive disorder Other names Clinical depression, major depression, unipolar depression, unipolar disorder, recurrent depression Sorrowing Old Man (At ...

  8. List of neurological conditions and disorders - Wikipedia

    en.wikipedia.org/wiki/List_of_neurological...

    This is a list of major and frequently observed neurological disorders (e.g., Alzheimer's disease), symptoms (e.g., back pain), signs (e.g., aphasia) and syndromes (e.g., Aicardi syndrome). There is disagreement over the definitions and criteria used to delineate various disorders and whether some of these conditions should be classified as ...

  9. Hippocampus proper - Wikipedia

    en.wikipedia.org/wiki/Hippocampus_proper

    The polymorphic layer is often called the hilus or hilar region. [12] The neurons in the polymorphic layer, including mossy cells and GABAergic interneurons, primarily receive inputs from the granule cells in the dentate gyrus in the form of mossy fibers and project to the inner molecular layer of the dentate gyrus via the associational ...

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