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Several theories concerning the biologically based cause of depression have been suggested over the years, including theories revolving around monoamine neurotransmitters, neuroplasticity, neurogenesis, inflammation and the circadian rhythm. Physical illnesses, including hypothyroidism and mitochondrial disease, can also trigger depressive ...
Disruptions in circadian rhythms can lead to somatic and cognitive symptoms, as seen in jet lag or during daylight saving time. Individuals diagnosed with, or at risk for, mood disorders may be especially sensitive to these disruptions and thus, vulnerable to episodes of depression or mania when circadian rhythm disruptions occur. [10] [11] [12 ...
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 The reason given is: Many outdated sources and information (older than five years).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 ...
Alpha wave biofeedback has gained interest for having some successes in humans for seizure suppression and for treatment of depression. [35] Alpha waves again gained interest in regards to an engineering approach to the science fiction challenge of psychokinesis, i.e. control of movement of a physical object using energy emanating from a human ...
One second sample of an EEG alpha oscillations. This rhythm occurs at frequencies similar to the mu rhythm, although alpha oscillations are detected over a different part of the brain. The left motor cortex, or BA4, is highlighted in green on this left lateral view of the brain. This is the area over which mu rhythms are detected bilaterally.
Diurnal mood variation or morning depression is a prominent [1] depression symptom characterized by gradual mood improvement through the day, reaching its peak sometime after twilight. While the main form of diurnal mood variation presents itself as described, a reversed form, with a worsening of mood towards the evening, also exists. [ 2 ]
Thalamocortical alpha frequency oscillations have been noted in the human occipital-parietal cortex. This activity could be originated by the pyramidal neurons in layer IV. [ 3 ] It has been shown that alpha rhythms seem to be related to the focus of one's attention: external focus on visual tasks diminishes alpha activity while internal focus ...
A study by the National Institute of Health published findings in 2016 that concluded, "seasonal and circadian rhythm disturbances are significantly associated with ADHD symptoms." Participants in the study who had ADHD were three times more likely to have SAD symptoms (9.9% vs 3.3%), and about 2.7 times more likely to have s-SAD symptoms (12.5 ...
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