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hippocampus

·September 3, 2025·5 min read

How the Brain Extinguishes Fear Memories

Scientists have, for the first time, identified the brain signals linked to extinguishing fear memories in humans. Using implanted electrodes and advanced Representational Similarity Analysis, they showed that theta activity in the amygdala increases when previously unpleasant cues are re-learned as safe.

Featured Genetics Neuroscience

·August 21, 2025·5 min read

Gene Blueprint of Neural Stem Cells in the Brain Identified

A new study has mapped the genetic blueprint of neural stem and progenitor cells (NPCs), the rare cells responsible for generating new neurons in the adult brain. Using a digital sorting algorithm and cross-species analysis, researchers identified 129 NPC-specific genes, 25 of which are already linked to neurological disorders and 15 that may explain previously unknown conditions.

Featured Genetics Neurology Neuroscience

·August 20, 2025·3 min read

Blocking Protein Reverses Age-Related Memory Loss

Aging disrupts memory by increasing levels of the protein FTL1 in the hippocampus, new research shows. In mice, excess FTL1 caused neurons to grow abnormally and led to memory decline, while reducing FTL1 reversed these impairments.

This shows hippocampal neurons, and is an AI representation.

Featured Neuroscience

·August 18, 2025·5 min read

New Neuron Type Controls How Accurately We Recall Memories

Scientists have identified a previously unknown group of inhibitory neurons defined by the adhesion molecule Kirrel3. These neurons receive input from dentate granule cells and project strongly onto CA3 hippocampal neurons, placing them at a critical juncture for memory retrieval.

This shows the outline of a person with the brain and pancreas highlighted.

Featured Genetics Neuroscience Psychology

·August 16, 2025·5 min read

Bipolar Mood Shifts Linked to Insulin Signaling in the Pancreas

A new study uncovers a pancreas–hippocampus feedback loop that may help explain mood swings in bipolar disorder. Using patient-derived pancreatic islets, researchers found reduced insulin secretion linked to elevated RORβ, a bipolar risk gene.

This shows a brain with the amygdala and hippocampus glowing red.

Featured Neuroscience

·July 26, 2025·6 min read

How the Brain Reactivates Emotional Experiences

A new study using direct recordings from human brains reveals how the amygdala and hippocampus coordinate to form and retrieve emotional memories. During aversive memory encoding, high-frequency gamma activity in the amygdala shapes hippocampal responses, which are later reactivated in the hippocampus—but not the amygdala—during memory recall.

Featured Neuroscience Visual Neuroscience

·July 25, 2025·6 min read

Brain Decodes Visual Memories by Timing, Not Just Firing Neurons

A new study has uncovered how the brain efficiently encodes and recalls visual memories—by organizing them into categories and using the precise timing of neuronal activity.

Featured Neuroscience

·July 23, 2025·6 min read

Your Brain Maps the Same Path Differently Every Time

New research shows that our brain’s internal map rewrites itself every time we navigate a familiar environment. Even when mice experienced identical virtual mazes with controlled sensory input, their hippocampal neurons activated in different patterns on each run.

Featured Neuroscience

·July 20, 2025·6 min read

The Brain’s Ripple Effect: How Memories Are Structured

Researchers have identified ripple-type brain waves as key to how humans segment and store memories. By recording brain activity in epilepsy patients watching a TV episode, they found ripples marked event boundaries in the hippocampus while supporting information processing in cortical areas.

Featured Neuroscience

·July 15, 2025·3 min read

Hippocampus and Insula Team Up to Encode Emotional Memories

A new study explored how the hippocampus and insula interact during the encoding of emotional memories in humans. Sixteen participants with implanted electrodes viewed emotionally valenced words and attempted to recall them while neural activity was recorded.

Featured Genetics Neuroscience

·July 5, 2025·4 min read

Human Brains Keep Making Memory Neurons in Adulthood

A groundbreaking study shows that the human hippocampus continues producing new neurons well into late adulthood. Researchers identified neural progenitor cells—the precursors to neurons—in adults up to 78 years old, confirming ongoing neurogenesis in the memory center of the brain.

Featured Neuroscience

·June 16, 2025·7 min read

Brain Cells Tune to Multiple Rhythms Like a Neural Radio

New research reveals that individual neurons in the hippocampus can respond to both slow and fast brain waves at the same time by switching between different firing modes. This process, called interleaved resonance, allows brain cells to encode complex information by using bursts for slower theta waves and single spikes for faster gamma waves.

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hippocampus

How the Brain Extinguishes Fear Memories

Gene Blueprint of Neural Stem Cells in the Brain Identified

Blocking Protein Reverses Age-Related Memory Loss

New Neuron Type Controls How Accurately We Recall Memories

Bipolar Mood Shifts Linked to Insulin Signaling in the Pancreas

How the Brain Reactivates Emotional Experiences

Brain Decodes Visual Memories by Timing, Not Just Firing Neurons

Your Brain Maps the Same Path Differently Every Time

The Brain’s Ripple Effect: How Memories Are Structured

Hippocampus and Insula Team Up to Encode Emotional Memories

Human Brains Keep Making Memory Neurons in Adulthood

Brain Cells Tune to Multiple Rhythms Like a Neural Radio

Artificial Sweeteners Tied to Faster Cognitive Decline

Humans and AI Share Similar Learning Strategies

Air Pollution Linked to Toxic Protein Clumps Driving Lewy Body Dementia

Breast Milk Has a Built-In Body Clock for Babies

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