SuperAgers Kept Youthful Memory With Preserved Cortex and Larger Entorhinal Neurons

by
SuperAgers Reveal Biology of Preserved Memory

SuperAgers Reveal Brain Biology of Preserved Memory TL;DR: Octogenarians who recall words like 50-year-olds carry a distinct brain profile: preserved cortical volume, a cingulate cortex thicker than younger adults, larger entorhinal neurons, fewer inflammatory microglia, and more von Economo neurons — the biology is real, not just motivational. Key Findings Age-80 memory matched 50-to-60-year-olds: SuperAgers …

Read more

Autism Severity Tracked Frontoparietal-DMN Connectivity Across ADHD and Autism

by
Autism Severity Showed Up in a Shared ADHD Connectome

Autism Severity Showed Up in a Shared ADHD Connectome TL;DR: In 166 verbal children diagnosed with either autism or ADHD without autism, stronger resting-state coupling between the left middle frontal gyrus and posterior cingulate cortex tracked clinician-rated autism severity across both diagnoses, while ADHD symptom ratings showed no comparable brain-wide signal. Key Findings 166 low-motion …

Read more

Digital Avatar Faces Appear Believable When Eyes Match Emotions

by
Digital Faces Looked More Believable When Their Eyes Matched the Emotion

Digital Faces Looked More Believable When Their Eyes Matched the Emotion TL;DR: A virtual smile or glare looked most believable with direct eye contact, while sadness became more believable when the digital face looked downward. Key Findings Direct gaze boosted approach emotions: Happy and angry avatar expressions looked most authentic when the eyes met the …

Read more

Low-Level Alcohol Linked to Lower Cortical Perfusion and Thickness

by
Low-Level Drinking Was Not Invisible to the Aging Cortex

Low-Level Drinking Was Not Invisible to the Aging Cortex TL;DR: Even drinking within low-risk guidelines was linked to lower cortical blood flow and thinner cortex when lifetime exposure met advancing age. Key Findings All participants stayed under 60 drinks per month: The cohort excluded alcohol use disorder and focused on healthy non-smoking adults reporting low-level …

Read more

Lifetime Cognitive Enrichment Delayed Alzheimer’s Dementia

by
Lifetime Cognitive Enrichment Delayed Alzheimer's Dementia

Lifetime Cognitive Enrichment Delayed Alzheimer’s Dementia TL;DR: In 1,939 Rush Memory and Aging Project participants, higher lifetime cognitive enrichment was linked to 38% lower Alzheimer’s dementia hazard and about 5 years later dementia onset. Key Findings 1,939 dementia-free adults: Participants were older adults from Northeastern Illinois in the Rush Memory and Aging Project, with a …

Read more

Ketamine Restored Reward Bias in Depression and Stressed Rats

by
Ketamine Restored Reward Bias Across Species

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 …

Read more

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

by
EPA Rewired Brain Vessels After Repetitive Brain Injury

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 …

Read more

Mediterranean Diet Linked to Higher Levels of Mitochondrial Microproteins (Humanin and SHMOOSE)

by
Mediterranean Diet Linked Mitochondrial Microproteins

Mediterranean Diet Linked Mitochondrial Microproteins TL;DR: Mediterranean diet adherence tracked with higher mitochondrial microproteins Humanin and SHMOOSE in older adults, pointing to a possible mitochondrial route for healthy-aging benefits. Key Findings Higher adherence tracked with SHMOOSE: Patients with stronger Mediterranean diet adherence showed higher circulating SHMOOSE levels. Humanin moved with diet and Nox2: Humanin was …

Read more

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

by
Dopamine Disruption May Start Alzheimer's Memory Failure

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 …

Read more

First-Episode Psychosis Reduced CSF C4A-C1Q Immune Coupling

by
C4A Broke Away From C1Q in First-Episode Psychosis

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 …

Read more

+ Load more