TL;DR: A 2026 systematic review in Translational Psychiatry found that depression brain-stimulation studies repeatedly linked treatment response to subcallosal cingulate connectivity, but inconsistent methods still limit its use as a treatment-selection biomarker. Key Findings 28 studies met criteria: The review included resting-state functional MRI (fMRI), a scan that tracks blood-flow changes as a proxy for …
TL;DR: A 2025 study in European Journal of Neuroscience found that slow breathing sharpened fearful-face perception during inhalation but weakened it during exhalation, with magnetoencephalography showing brain-timing changes before the face appeared. Key Findings 31 adults judged faces while breathing on cue: The main experiment paired normal-paced and slow-paced breathing with a fearful-versus-neutral face discrimination …
TL;DR: A 2025 mouse study in Cell mapped a sleep-growth hormone circuit, showing how hypothalamic GHRH and somatostatin neurons coordinate hormone pulses and then feed back onto wakefulness. Key Findings GH rose in REM and NREM: Growth hormone release was enhanced during both rapid eye movement and non-REM sleep. Two neuron types controlled release: Hypothalamic …
TL;DR: A 2026 medRxiv preprint found that alpha-synuclein seed-positive Parkinson’s patients had slower ON-medication motor progression, measured while usual Parkinson’s medication was active, and more sustained levodopa responsiveness than matched seed-negative patients. Key Findings 223 matched patients: The analysis compared 40 SAA-negative and 183 SAA-positive sporadic Parkinson’s patients from PPMI. ON-state progression diverged while medication …
TL;DR: A 2026 systematic review in The British Journal of Psychiatry linked schizophrenia to a multisystem advanced-aging phenotype, including older-appearing brain scans, shorter telomeres, inflammation, and higher dementia risk. Key Findings 170 studies included: The review synthesized studies of aging markers in schizophrenia and non-affective psychosis published after 2009. Most studies were moderate or high …
TL;DR: A 2026 meta-analysis in Psychological Medicine found postpartum depression (PPD) brain-activity differences across default-mode, limbic, and sensorimotor regions, with spatial overlap in serotonin, dopamine, and vesicular acetylcholine transporter maps. Key Findings 12 imaging studies pooled: The meta-analysis included 475 postpartum depression patients and 504 healthy controls. Higher activity appeared in two regions: PPD was …
TL;DR: A 2026 medRxiv preprint found that plasma p-tau217 AI models still separated amyloid-positive from amyloid-negative people across ADNI and A4, but calibration drift made the same probabilities less dependable for clinical decisions. Key Findings Calibration drift weakened clinical utility: The study trained plasma biomarker machine-learning models in one Alzheimer’s cohort and tested them in …
TL;DR: Across 4,000+ people, the relationship between brain activity and cognitive control flipped direction depending on whether researchers compared people to each other or tracked the same person over time. The finding is called nonergodicity — and it means decades of group-level brain studies may have been telling us the opposite of what’s true inside …
TL;DR: A 2026 review in BMC Psychiatry found 441 primary MRI and electroencephalogram (EEG), a scalp recording of brain electrical activity, mental-health biomarker studies, but most were small, cross-sectional, and concentrated in depression, making routine clinical use premature. Key Findings 58,824 records screened: Researchers searched MEDLINE and Embase from 2010 to September 2023, then mapped …
TL;DR: A 2022 study in Nature Communications used non-contrast 3D T2-FLAIR MRI, a scan that suppresses ordinary cerebrospinal-fluid brightness, to map possible brain-border drainage routes toward cervical lymph nodes, but FLAIR brightness alone does not prove lymph flow. Key Findings 81 clinical MRI scans supplied the human map: The retrospective cohort included 45 females and …
