Neuroscience

Microglia Signals Varied Across Depression and Psychosis

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Microglia Signals Varied Across Depression and Psychosis

TL;DR: A 2026 systematic review in Molecular Psychiatry found that microglia-related findings across major depression, bipolar disorder, and schizophrenia were better explained by biological subgroups than by one uniform diagnosis-by-diagnosis inflammation pattern. Key Findings Three evidence streams: The review integrated human translocator protein positron emission tomography (TSPO-PET) imaging, cerebrospinal fluid kynurenine-pathway metabolites, and postmortem microglial …

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GPR30 Estrogen Receptor May Link Hormone Fluctuations to Migraine Pathophysiology

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GPR30 Estrogen Receptor May Link Hormone Fluctuations to Migraine Pathophysiology

TL;DR: A 2026 review in Journal of Pain Research argued that G protein-coupled receptor 30 (GPR30/GPER), a membrane estrogen receptor, could help connect estrogen fluctuations with migraine biology. Key Findings Female-predominant migraine: The review notes a female-to-male migraine prevalence ratio of about 2:1 to 3:1. Menstrual migraine link: About 50% to 60% of female migraineurs …

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Diffusion Model for Conflict Tasks Explains Attention in Simon, Flanker, and Stroop Tests

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Diffusion Model for Conflict Tasks Explains Attention in Simon, Flanker, and Stroop Tests

TL;DR: A 2026 review in Psychonomic Bulletin & Review explained how the Diffusion Model for Conflict tasks (DMC) models attention and cognitive control in Simon, Eriksen flanker, and Stroop tasks. Key Findings 3 classic tasks: The review focused on Simon, Eriksen flanker, and Stroop conflict tasks. 2 evidence streams: DMC combines a linear controlled stream …

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tDCS Over rTPJ and lDLPFC Changed Empathy Differently

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tDCS Over rTPJ and lDLPFC Changed Empathy Differently

TL;DR: A 2026 study in Psychological Medicine found that transcranial direct current stimulation (tDCS), a weak electrical brain-stimulation method, affected empathy differently depending on whether researchers targeted the right temporoparietal junction or the left dorsolateral prefrontal cortex. Key Findings Two brain targets diverged: right temporoparietal junction (rTPJ) stimulation strengthened cognitive empathy, while left dorsolateral prefrontal …

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tDCS Plus Cognitive Training Gave Short-Term Cognitive Benefit

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tDCS Plus Cognitive Training Gave Short-Term Cognitive Benefit

TL;DR: A 2026 systematic review posted on medRxiv found that transcranial direct current stimulation (tDCS), a weak noninvasive brain-stimulation method, added to cognitive training produced a small short-term cognitive benefit across 27 trials, but the effect faded at follow-up and the evidence certainty was very low. Key Findings 27 controlled studies: The meta-analysis included 1,012 …

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SYNGAP1 Atypical Absence Seizures Linked to Higher Autistic Behavior Scores

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SYNGAP1 Atypical Absence Seizures Linked to Higher Autistic Behavior Scores

TL;DR: A 2026 preprint in medRxiv linked atypical absence seizures in SYNGAP1-related developmental and epileptic encephalopathy (SYNGAP1-DEE) to higher caregiver-reported autistic behavior scores, while caregiver-reported peak seizure frequency did not show the same association. Key Findings 337-person analytic cohort: Researchers analyzed 337 SYNGAP1 registry participants with complete epilepsy and behavior questionnaires. 259 epilepsy-positive participants: Epilepsy …

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Human Substantia Nigra Neurons Reflected Recent Reward History

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Human Substantia Nigra Neurons Reflected Recent Reward History

TL;DR: A 2026 iScience study recorded human substantia nigra neurons during Parkinson’s surgery and found that putative dopamine-neuron firing was higher after a prior reward, while the next response was modestly faster. Key Findings Direct human recordings: Researchers recorded 27 substantia nigra neurons across 13 sessions in 11 Parkinson’s disease patients undergoing deep-brain stimulation surgery. …

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Stress Disrupted Social Behavior Through mPFC Oxytocin Circuit

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Stress Disrupted Social Behavior Through mPFC Oxytocin Circuit

TL;DR: A 2026 study in Communications Biology found that restraint stress weakened medial prefrontal cortex (mPFC, a frontal brain region that helps organize social behavior) activity during social testing, while stress-activated amygdala and hypothalamic oxytocin inputs pushed the circuit toward inhibition. Key Findings Two-hour acute restraint preserved basic sociability but disrupted social novelty preference, suggesting …

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Slow-Wave EEG-fMRI Maps Could Track Brain Network Deviation

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Slow-Wave EEG-fMRI Maps Could Track Brain Network Deviation

TL;DR: A 2026 iScience study used simultaneous EEG-fMRI from 24 healthy adults to build reference maps for slow-wave events (SWEs), brief sleep-related brain waves, and proposed SloCAD as a way to measure how an individual brain deviates from healthy slow-wave network patterns. Key Findings Two healthy cohorts were mapped: Researchers analyzed simultaneous EEG-fMRI sleep recordings …

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SLC35F2 Solved a Queuosine Transport Mystery

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SLC35F2 Solved a Queuosine Transport Mystery

TL;DR: A 2025 study in PNAS found that sLC35F2 emerged as the high-specificity transporter for queuine and queuosine, linking gut-derived micronutrients to tRNA modification and the cell’s protein-translation machinery. Key Findings 30-year transporter mystery: Scientists had suspected a selective queuine transporter for more than three decades. SLC35F2 carried Q and q: The study identifies SLC35F2 …

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