Neuroscience

Ketamine Restored Reward Bias in Depression and Stressed Rats

May 15, 2026May 3, 2026 by BrainASAP

Ketamine Restored Reward Bias Across Species TL;DR: Ketamine restored reward-learning bias in both treatment-resistant depression and chronically stressed rats while leaving basic discrimination unchanged. Key Findings Reward bias increased: Ketamine significantly increased response bias toward the more frequently rewarded stimulus in both species. Healthy-control levels returned: The reward-bias effect reached levels comparable with healthy controls …

EPA Impaired Brain Vessel Repair After Repetitive Brain Injury (CTE)

May 15, 2026May 3, 2026 by BrainASAP

EPA Rewired Brain Vessels After Repetitive Brain Injury TL;DR: Fish-oil-derived EPA looked less like a simple neuroprotective supplement and more like a lipid signal that changed brain-vessel repair after repetitive mild traumatic brain injury. Key Findings EPA accumulated before injury: In a fish-oil diet model, eicosapentaenoic acid built up in the brain at baseline rather …

L-DOPA Partly Rescued Entorhinal Memory Failure in Alzheimer’s Mice

May 15, 2026May 3, 2026 by BrainASAP

Dopamine Disruption May Start Alzheimer’s Memory Failure TL;DR: In an Alzheimer’s mouse model, early memory failure tracked a broken dopamine signal into the lateral entorhinal cortex, and both optogenetic dopamine reactivation and L-DOPA partially restored learning. Key Findings Early learning slipped: Young APP knock-in mice reached 78.6% correct trials in the final learning block, compared …

First-Episode Psychosis Reduced CSF C4A-C1Q Immune Coupling

May 15, 2026May 3, 2026 by BrainASAP

C4A Broke Away From C1Q in First-Episode Psychosis TL;DR: In cerebrospinal fluid from people with first-episode psychosis, the usual positive relationship between C4A and C1Q disappeared, while C4A’s broader immune-network pattern shifted sharply in a way C4B did not. Key Findings C4A-C1Q coupling broke in psychosis: The study compared 113 patients with first-episode psychosis against …

Astrocyte BMP Suppression Reduced Audiogenic Seizures in Fragile X Mice

May 15, 2026May 3, 2026 by BrainASAP

Astrocyte BMP Suppression Eased Fragile X Signals TL;DR: In a fragile X mouse model, suppressing BMP signaling specifically in astrocytes reduced sound-triggered seizure severity and partially restored synaptic activity in the auditory cortex, a sound-processing region relevant to sensory over-responsiveness. Key Findings BMP signaling was elevated in fragile X astrocytes: The study focused on bone …

Childhood Trauma Increased Randomness in Teen Depression Brain Networks

May 15, 2026May 3, 2026 by BrainASAP

Childhood Trauma Made Teen Depression Networks More Random TL;DR: In 343 adolescents with major depression, childhood trauma was linked to less efficient brain-network organization, partial normalization after treatment, and an fMRI-based model that predicted antidepressant response with 82% balanced accuracy. Key Findings 343 depressed adolescents scanned: The study analyzed resting-state functional MRI (fMRI) in adolescents …

Depression Genetics Identified Altered DLPFC Neurons and Microglia

May 15, 2026May 3, 2026 by BrainASAP

Depression Genetics Points to Altered DLPFC Cell Types TL;DR: A Nature Genetics study mapped more than 200,000 cells from the dorsolateral prefrontal cortex and found depression-linked regulatory changes concentrated in deep-layer excitatory neurons and a microglia subtype. Key Findings 84 postmortem DLPFC donors: The analysis compared dorsolateral prefrontal cortex tissue from people with major depression …

Baby Teeth Metals Linked to Brain and Behavior in Children

May 15, 2026May 2, 2026 by BrainASAP

Baby Teeth Metals Linked to Child Brain and Behavior TL;DR: A Science Advances study used naturally shed baby teeth as biological time capsules and found that higher early-life metal mixtures, especially during two postnatal windows, tracked with later behavioral symptoms and MRI signs of altered brain development. Key Findings Baby teeth mapped exposure timing: The …

Alzheimer’s Treatment Needs More Than Amyloid Drugs

May 15, 2026May 2, 2026 by BrainASAP

Alzheimer’s Treatment Needs More Than Amyloid TL;DR: A 2026 review in Science China Life Sciences argues that amyloid-beta antibodies such as lecanemab and donanemab are important progress, but Alzheimer’s treatment cannot stop at amyloid. The disease also involves tau tangles, genetics, aging biology, immune changes, vascular and metabolic health, and systemic conditions that shape whether …

Adaptive Skills Buffered Prenatal Stress Brain Response

May 15, 2026May 2, 2026 by BrainASAP

Adaptive Skills Buffered Prenatal Stress Brain Response TL;DR: In a 34-child neuroimaging pilot involving prenatal exposure to Superstorm Sandy, stronger early adaptive skills appeared to soften the link between disaster exposure and lower emotion-circuit activation at age 8. Key Findings Superstorm Sandy created a dated prenatal stress exposure: 11 children were exposed during pregnancy, while …

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