MentalHealthDaily

Misophonia vs Hyperacusis fMRI: 91 Adults Show Different Brain Networks

by GLOOM

Photoreal illustration of brain regions responding to sound waves with overlapping but distinct activation maps, conveying two sound-sensitivity disorder profiles.

A 2026 task-based fMRI study of 91 young adults separated misophonia from hyperacusis inside the same “sound sensitivity” experiment: misophonia-containing groups showed visual association cortex and ACC-visual network changes during unpleasant sounds, while key hyperacusis contrasts showed weaker salience-control connectivity than misophonia.1 The scan data support separating trigger-specific sound aversion from loudness-driven sound intolerance, while …

Anxious Depression fMRI Meta-Analysis Finds Left Temporal Activation

by GLOOM

Editorial brain-map card for anxious depression with highlighted limbic and prefrontal regions from an earlier draft framing.

A 2026 fMRI meta-analysis of 11 studies found a narrow anxious-depression signal: 829 anxious-depression patients differed from 681 non-anxious MDD patients in left middle temporal gyrus activation (SDM-Z = 2.046, p = 0.020), while healthy-control contrasts centered on the anterior commissure and right middle frontal gyrus. The calibrated interpretation is not “amygdala and insula hyperactivity …

Astrocyte Calcium Signals Shape Amygdala Fear Memory and Extinction in Mice

by GLOOM

Photoreal illustration of astrocytes interacting with neurons in the amygdala, conveying glial role in fear circuit dynamics.

A 2026 Nature mouse study found that basolateral amygdala astrocyte Ca2+ signals tracked fear retrieval and extinction, then showed causality: 3 mg/kg CNO manipulations of astrocyte DREADDs pushed early-extinction freezing in opposite directions while both disrupting later extinction retrieval.1 Research Highlights Astrocytes tracked fear state: after 3 tone-shock pairings and 2 days of 25 cue-only …

Teen Anxiety and Anhedonia Split Reward-Uncertainty fMRI

by GLOOM

Photoreal illustration of adolescent brain regions with overlapping reward and default-mode network glow, conveying uncertainty processing.

A 2026 fMRI study of 84 medication-free adolescents found that reward uncertainty had its own phase-specific brain pattern: anxiety, depression, and anhedonia separated across different task phases and brain systems.1 The clearest clinical split was narrow but useful: anxiety tracked blunted striatum/thalamus activation during uncertain non-reward expectancy, while depression and anhedonia tracked higher visual/default-network activation …

fMRI Biotypes Predicted tDCS Anxiety Response in Older Adults

by GLOOM

Photoreal illustration of a clinician fitting a tDCS device on an older adult, with brain network biotype overlays.

A 2026 BETA analysis of 199 older adults found that resting-state fMRI could separate 4 anxiety-related tDCS response patterns, but the result was narrower than “brain scan predicts treatment”: only the Robust tDCS Responder subtype showed a statistically reliable Active vs. Sham anxiety advantage across all participants.1 Research Highlights Only 1 subtype cleared the Active …

Resting Brain Connectivity Predicts Fear Extinction Learning

by GLOOM

Photoreal illustration of brain network connections in the fear-extinction circuitry, with imagery linking amygdala and prefrontal regions.

A 2026 multimodal MRI analysis of 509 healthy adults found that fear acquisition, extinction learning, and renewal were not predicted by one generic “fear circuit” score: functional connectivity predicted acquisition, structural connectivity predicted extinction, and effective connectivity was the only renewal signal.1 The extinction result is the clinically interesting piece because exposure therapy depends on …

Iceland Psychiatric Data: 21% Diagnosed, 34% on Psychotropics (2026)

by GLOOM

MHD featured image for Iceland Psychiatric Health: 21% Diagnosed, 34% on Psychotropics.

Iceland is a registry-rich country with a small enough population that genuinely nationwide health data is feasible — not the survey-based approximations that anchor most psychiatric epidemiology elsewhere. A 2026 PLOS One study used the Iceland Screens, Treats, or Prevents Multiple Myeloma (iStopMM) cohort — 80,759 adults aged 40+, representing 54% of all eligible Icelanders …