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hippocampus

This shows speech bubbles full of neurons.

·June 24, 2026·9 min read

Single Neurons Navigate Bilingual Brains

Bilingual brains store concepts on a single, shared semantic map inside the hippocampus, using distinct clusters of language-specific neurons to navigate the map from different perspectives for seamless linguistic switching.

Featured Genetics Neuroscience

·June 23, 2026·9 min read

Sleep Deprivation Increases Synaptic Density Markers in the Brain

A study using PET imaging shows that 28 hours of sleep deprivation significantly increases SV2A, a marker for synaptic density, in the human hippocampus and thalamus, supporting the theory that sleep is structurally required to reset neural connections.

Featured Neuroscience

·June 3, 2026·10 min read

Hippocampal CA1 Hub Safeguards Past Knowledge

New research unmasks a "memory switchboard" deep within the hippocampus that allows the brain to reuse cells to store different memories without overwriting them.

Featured Neurology Neuroscience

·May 22, 2026·9 min read

Long COVID Brain Inflammation Decreases Over Time

Does persistent brain inflammation explain the prolonged fatigue and cognitive decline of Long COVID? A neuroimaging clinical trial demonstrates that widespread brain inflammation is not the primary driver of long-term symptoms.

Featured Neuroscience

·May 18, 2026·8 min read

Added Sugar Restricts Full Memory Recovery After Dietary Switch

Can a healthy diet fully reverse the cognitive damage caused by years of junk food? A systematic review and meta-analysis reveals that while improving nutritional quality significantly benefits memory, the recovery is fundamentally incomplete.

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Featured Neurology Neuroscience

·May 9, 2026·8 min read

Reducing Visceral Fat Protects the Brain for Decades

A landmark 16-year MRI study identified cumulative abdominal fat as a specific, modifiable risk factor for brain atrophy. The findings demonstrate that sustained reductions in visceral fat, mediated by better glucose control, are essential for preserving hippocampal volume and cognitive function in late midlife, independent of total weight loss.

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Featured Neuroscience

·April 29, 2026·10 min read

Why Your Brain “Dreams” Even When You’re Awake

Researchers have identified four distinct mental states that occur regardless of whether we are asleep or awake, revealing a "neural fingerprint" for bizarre, dream-like thoughts that can surface even in the middle of the day.

Featured Neuroscience

·April 27, 2026·7 min read

Why the Brain Starts with “Too Much” to Build Memories

New neuroscience research challenges the "blank slate" theory, proving that the hippocampal memory center starts full and streamlines as we age.

Featured Neuroscience

·April 27, 2026·8 min read

Why the Hard Drive Analogy Fails for Human Memory

Neuroscience explains that forgotten memories are often the result of poor encoding or faded retrieval paths, rather than a lack of "space" in the brain.

Featured Neuroscience Psychology

·April 14, 2026·9 min read

Right-to-Left Brain Circuit Essential for Navigation

Researchers have discovered a neural circuit connecting the right and left hippocampus that is vital for spatial memory. The study also links the disruption of this "bridge" to schizophrenia-related cognitive deficits.

Featured Neuroscience Psychology

·April 12, 2026·11 min read

Estrogen Levels at the Moment of Trauma Predict PTSD

High estrogen levels at the moment of trauma increase the brain's "plasticity," making it more vulnerable to PTSD. This biological state helps explain why women face higher PTSD risks.

Featured Neuroscience

·April 11, 2026·9 min read

How the Brain Maps What vs. Where When Reality Shifts

The hippocampus reorganizes its activity based on expectations. The anterior region processes "what" changes (objects), while the posterior region handles "where" changes (location).