Researchers observed hippocampal place cell changes in animal experiments of cue-poor and cue-rich spatial environments. The findings have implications for the treatment of brain disorders and the development of new AI technologies.
Pyramidal cells in the CA2 region of the hippocampus are responsible for storing critical timing information.
Astrocytes, not microglia, are responsible for constantly eliminating unnecessary and excessive adult synaptic connections in response to brain activity.
GABAergic interneuron excitation is essential for network activity in the hippocampus of the fetal brain.
In mouse models of Alzheimer's disease, active neurons still encode memory, and a group of active neurons encodes novel environmental information. The signal of the novelty containing neurons causes a superimposition disturbing the signal of memory encoding neurons.
Hippocampal neurons that store abstract memories of prior experiences activate when new, but similar events take place.
Cognitive challenges trigger a slight oxygen deficit in hippocampal pyramidal neurons. This increases the production of erythropoietin (Epo) and its receptors in the active neurons, stimulating neighboring precursor cells to form new neurons and enhancing connectivity.
Hippocampal neurons involved in Pavlovian learning shift their behavior and become more synchronized when a memory is being formed. The findings shed new light on the neurobiological mechanisms of memory and learning.
A new neuroimaging study reveals sex-based differences in the development of the hippocampus and amygdala. The findings may shed light on sex-based differences in the emergence of mental health disorders the occur during adolescence and early adulthood.
A new study implicated interneurons and pyramidal cells in the ability of a seizure to spread through the brain.
A newly identified neural network in the hippocampal formation plays a critical role in memory and object-location learning. The findings are highly relevant to learning and memory disorders, including Alzheimer's disease.
A lack of oxygen as a result of preterm birth does not cause hippocampal neurons to die but does impair hippocampal development. Hypoxia causes hippocampal cells to fail to mature normally, causing a reduction in long-term potentiation and impaired learning.