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Groundbreaking fMRI study finds 4 distinct neurological subtypes of depression - ExtremeTech

We found that, superimposed on this shared pathological core, distinct patterns of abnormal functional connectivity differentiated the four biotypes and were associated with specific clinical-symptom profiles. For example, as compared to controls, reduced connectivity in frontoamygdala networks, which regulate fear-related behavior and reappraisal of negative emotional stimuli, was most severe in biotypes 1 and 4, which were characterized in part by increased anxiety. By contrast, hyperconnectivity in thalamic and frontostriatal networks, which support reward processing, adaptive motor control and action initiation, were especially pronounced in biotypes 3 and 4 and were associated with increased anhedonia and psychomotor retardation. And reduced connectivity in anterior cingulate and orbitofrontal areas supporting motivation and incentive-salience evaluation was most severe in biotypes 1 and 2, which were characterized partly by increased anergia and fatigue.

#depression #paleopsychiatry #anxiety #fMRI #amygdala #neurotypes #limbic - extremetech.com

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