Research Keyword: Amygdala

Associations Between Escitalopram and Psilocybin Therapy and Brain Resting-State Functional Connectivity in Major Depressive Disorder

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This study compared how two depression treatments—a common antidepressant called escitalopram and psilocybin therapy—affect brain connectivity and depression symptoms. Both treatments reduced feelings of lacking pleasure and impulsive behaviors in depressed patients. The research found that while both worked, they affected different parts of the brain’s reward system in distinct ways, suggesting they may work through different mechanisms.

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Premorbid characteristics of the SAPAP3 mouse model of obsessive-compulsive disorder: behavior, neuroplasticity, and psilocybin treatment

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This research examined young genetically modified mice that lack the SAPAP3 gene to understand early signs of obsessive-compulsive disorder-like behavior. The study found that these juvenile mice showed anxiety-like behaviors before developing the excessive grooming typical of the adult model. Surprisingly, psilocybin treatment—which works in adult mice—did not help reduce anxiety in the younger mice, suggesting that the brain needs to mature for this treatment to be effective.

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Exploring Molecular Changes in the Extended Amygdala Induced by Chronic Corticosterone Administration

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Researchers studied how prolonged stress hormone exposure affects the brain’s emotional center in mice. They found that chronic corticosterone treatment caused depression-like behaviors and specific molecular changes in different parts of the amygdala, a brain region crucial for processing emotions. These findings help explain how chronic stress disrupts the brain’s normal stress-regulation system and contributes to depression and other psychiatric conditions.

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