Mental Health Daily

Social Anxiety: Prefrontal Connectivity Differs but Amygdala-PFC Doesn’t

by GLOOM

Stylized fMRI connectivity map showing prefrontal and amygdala circuits during emotion regulation in social anxiety disorder.

The textbook story of social anxiety disorder is broken amygdala-prefrontal regulation — an overactive threat system the prefrontal cortex can’t calm down. A 2026 effective-connectivity study of 102 adults found something different: amygdala-prefrontal connectivity didn’t differ between social anxiety patients and controls, but connectivity between prefrontal regions did, particularly involving the pre-supplementary motor area.1 Research …

Ultrasound-Guided Acupotomy Reduced Chronic Spinal Pain in 32 RCTs

by GLOOM

MHD featured image for ultrasound-guided acupotomy chronic spinal pain meta-analysis.

A 2026 meta-analysis of 32 randomized trials involving 2,669 participants found that ultrasound-guided acupotomy reduced chronic spinal musculoskeletal pain, with pain intensity improving by SMD = −0.80 and disability by SMD = −0.99 on NDI/ODI measures.1 The direction is favorable, but all trials came from China and evidence certainty stayed moderate for pain and low …

Substance Use Disorder Brain Connectivity in 53 Studies

by GLOOM

MHD featured image for substance use disorder, resting-state fMRI, reward circuitry, and brain connectivity meta-analysis.

A 53-study resting-state functional magnetic resonance imaging (fMRI) meta-analysis found substance use disorder (SUD) linked to altered connectivity across prefrontal, striatal, thalamic, cingulate, and amygdala circuits. The most clinically relevant finding was an impulsivity correlation, not a diagnostic brain signature. Research Highlights Meta-analysis scale was meaningful: Zhang et al. pooled 53 whole-brain resting-state functional magnetic …

Teen Trauma Depression: fMRI Predicted Response at 82%

by GLOOM

A 2026 adolescent depression study used resting-state functional magnetic resonance imaging to test whether childhood trauma leaves a measurable network signature in the depressed teen brain. The researchers found disrupted default-mode network hubs in teenagers with major depressive disorder and childhood trauma, and baseline functional-connectome patterns predicted treatment response with 82% accuracy.1 Research Highlights Large …

Prenatal Nighttime Heat Linked to Autism Risk in 294,937-Child Cohort

by GLOOM

MHD featured image for prenatal nighttime heat and autism risk.

A Kaiser Permanente Southern California cohort involving 294,937 children linked extreme prenatal nighttime heat to autism diagnosis by age 5, with stronger associations at the 99th percentile than the 90th percentile.1 Compared with nighttime minimum temperature, daytime maximum temperature did not show the same confirmed whole-pregnancy pattern. Research Highlights Nighttime heat carried the main signal: …

Lobar Brain Bleeds Carried 3.49x Dementia Risk in NLP Stroke-Subtype Study

by GLOOM

MHD featured image for stroke subtypes and dementia risk.

A 2026 Scottish health-system preprint used natural language processing of CT and MRI reports to subtype stroke and found that lobar intracerebral hemorrhage carried a higher dementia risk beyond 6 months, aHR 3.49 vs matched controls.1 The method reduced unspecified stroke coding from 26.1% to 3.4%, making location-specific prognosis easier to see. Research Highlights Lobar …

fMRI Low-Frequency Oscillation Tracked Nicotine Dependence and Arousal

by GLOOM

MHD featured image for systemic low-frequency oscillation fMRI and nicotine arousal.

A 2026 multi-cohort fMRI study found that a signal often treated as physiological noise tracked nicotine dependence, cue-induced craving, abstinence, and stimulant effects.1 During cigarette cue exposure, systemic low-frequency oscillation amplitude correlated with nicotine dependence at r = −0.32, p = .009. Research Highlights Dependence tracked cue-period physiology: In 64 smokers, higher average sLFO amplitude …