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Catatonia Brain Circuits: Limbic System Review

MHD featured image for catatonia, limbic-system brain circuits, and psychomotor shutdown.

A 2026 systematic review argues that catatonia should be read as a limbic-cortical circuit syndrome, with motor shutdown tied to brain systems for threat, salience, motivation, and emotional regulation. Research Highlights 20 studies met criteria: the 2026 review screened 1,792 records, assessed 54 full texts, and included 20 articles: 13 observational studies and 7 case …

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2 Neuroanatomical Subtypes Identified for First-Episode Depression (2024 Study)

Depression, with its cloak of sadness and despair, affects millions worldwide, presenting a complex puzzle for scientists and clinicians alike. Recent research leveraging machine learning and high-resolution brain imaging has begun to unravel this complexity, revealing two distinct neuroanatomical subtypes of first-episode, treatment-naïve depression. This study offers fresh insights into depression’s heterogeneity, promising more tailored …

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Bilateral Anterior Capsulotomy (BAC) for Treatment-Resistant Depression & OCD (2023 Case Reports)

In the relentless pursuit of effective treatments for mental disorders, neurosurgery offers a glimmer of hope where traditional methods falter. Bilateral anterior capsulotomy (BAC), a neurosurgical procedure, emerges as an option for patients with treatment-resistant depression (TRD) and obsessive-compulsive disorder (OCD), offering substantial relief with minimal side effects. Highlights: Bilateral Anterior Capsulotomy (BAC) is a …

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Lifetime Major Depression Linked to Increased Activation of Amygdala & DLPFC (2024 Study)

Major depressive disorder (MDD) is a prevalent mental health condition marked by significant social and economic impacts. Recent research has advanced our understanding of MDD, particularly its association with brain activity and connectivity. A new study examined the relationship between lifetime MDD (LMDD) and brain activation in response to fearful faces, focusing on the amygdala …

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