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  2. Biology of depression - Wikipedia

    en.wikipedia.org/wiki/Biology_of_depression

    Depression may be related to the same brain mechanisms that control the cycles of sleep and wakefulness. Depression may be related to abnormalities in the circadian rhythm, [22] or biological clock. A well synchronized circadian rhythm is critical for maintaining optimal health.

  3. Neurogenesis hypothesis of depression - Wikipedia

    en.wikipedia.org/wiki/Neurogenesis_hypothesis_of...

    The neurogenesis hypothesis of depression gained popularity due to the large number of correlative studies which indicate a relationship between impaired hippocampal neurogenesis and depression. For example, reduced hippocampal volume is associated with depression, which impaired neurogenesis may contribute to. [6] Conflicting evidence

  4. Brain injury - Wikipedia

    en.wikipedia.org/wiki/Brain_injury

    Radiation and chemotherapy can lead to brain tissue damage by disrupting or stopping blood flow to the affected areas of the brain. This damage can cause long term effects such as but not limited to; memory loss, confusion, and loss of cognitive function. The brain damage caused by radiation depends on where the brain tumor is located, the ...

  5. Organic brain syndrome - Wikipedia

    en.wikipedia.org/wiki/Organic_brain_syndrome

    Other common causes of chronic organic brain syndrome sometimes listed are the various types of dementia, which result from permanent brain damage due to strokes, [7] Alzheimer's disease, or other damaging causes which are irreversible. Amnestic pertains to amnesia and is the impairment in ability to learn or recall new information, or recall ...

  6. Effects of nicotine on human brain development - Wikipedia

    en.wikipedia.org/wiki/Effects_of_nicotine_on...

    Vulnerability to the brain-modifying effects of nicotine, along with youthful experimentation with e-cigarettes, could lead to a lifelong addiction. [77] A long-term nicotine addiction from using a vape may result in using other tobacco products. [78] The majority of addiction to nicotine starts during youth and young adulthood. [79]

  7. Memory and trauma - Wikipedia

    en.wikipedia.org/wiki/Memory_and_trauma

    Damage to different areas of the brain can have varied effects on memory. The temporal lobes, on the sides of the brain, contain the hippocampus and amygdala, and therefore have a lot to do with memory transition and formation. Patients who have had injury to this area have experienced problems creating new long-term memories.