hippocampus

By trimming synapses in the adult mouse hippocampus, microglia help facilitate forgetting.

The silicon chips receive and send electrical signals, recreating activity from neurons in the rat brain that play a role in breathing and thinking.

New, unpublished results show some of the cells produce new neurons for up to 90 days, much longer than a previously identified set of neural stem cells that only generate neurons for a month or two.

Conflicting results on the existence of new neurons in adults have researchers designing new ways to identify and count neuronal progenitors—and finally get to the bottom of neurogenesis.

The Yale University cognitive neuroscientist studies how the brain extracts patterns from experiences.

Despite doubts last year about human adult neurogenesis, a study shows even 80-year-olds develop new cells in the hippocampus, but such growth is diminished in patients with Alzheimer’s disease.

A mouse study finds that when blood platelets are activated during exercise, they release factors that increase the number of newborn neurons in the hippocampus.

The protein expression data, which are freely available online, could help identify new drug targets for the disease.

Authors of a small study say the two abilities likely evolved in tandem.

Recordings of electrical activity in porcine brains finds similarities to rodent neural tissue.

By stimulating specific neurons in mouse brains, researchers demonstrate that memories from infancy are not lost, but merely difficult to access.

Scientists can livestream how the mouse brain’s hippocampus maps the physical world and accesses those memories.  

Mice who get less attention from their mothers have more copies of a common retrotransposon in the genomes of their hippocampal neurons.

Failure to produce evidence of neural precursor cells and immature neurons raises questions about the role of the process in learning and memory.

Upping a gene’s expression in rat brains made them better learners and normalized the activity of hundreds of other genes to resemble the brains of younger animals.

Recording from single neurons of epilepsy patients, neuroscientists show that both the strength and timing of neuronal firing are important to consciously perceive a visual object. 

To tease apart brain regions involved in forming versus remembering memories, scientists engineered mice whose brain cells could be manipulated and tagged.

Using diffusion-weighted tractography, scientists can produce a detailed image of the minute neural fibers within a mouse brain.  

A drug commonly used to treat clinical depression sets its effects in motion by hampering the release of an inhibitory neurotransmitter in mice.