Ensembles of neurons in the brain's hippocampus inform about future as well as past experiences
When a mammal explores an unfamiliar environment, ensembles of place cells in the hippocampus fire individually, recording specific locations in a cognitive map that aid future spatial navigation ...
Why some children are harmed by mother's alcohol, but others aren't
Exposure to alcohol in the womb doesn't affect all fetuses equally. Why does one woman who drinks alcohol during pregnancy give birth to a child with physical, behavioral or learning problems -- known as fetal alcohol spectrum ...
Hippocampal volume and resilience in posttramatic stress disorder
The hippocampus, a brain region implicated in memory and interpreting environmental contexts, has been the focus of a controversy in posttraumatic stress disorder (PTSD).
Hippocampus smaller in veterans not recovered from PTSD
(PhysOrg.com) -- The hippocampus, a brain area associated with memory and stress, was about six percent smaller on average in veterans with current chronic PTSD than in veterans who had recovered from PTSD, in a study conducted ...
Prozac reorganizes brain plasticity
Selective serotonin reuptake inhibitors (SSRI) such as Prozac are regularly used to treat severe anxiety and depression. They work by immediately increasing the amount of serotonin in the brain and by causing long term changes ...
As we sleep, speedy brain waves boost our ability to learn (w/ Video)
(PhysOrg.com) -- Scientists have long puzzled over the many hours we spend in light, dreamless slumber. But a new study from the University of California, Berkeley, suggests we're busy recharging our brain's ...
Flipping a switch on neuron activity
All our daily activities, from driving to work to solving a crossword puzzle, depend on signals carried along the body's vast network of neurons. Propagation of these signals is, in turn, dependent on myriad small molecules ...
Human stem cells transformed into key neurons lost in Alzheimer's
Northwestern Medicine researchers for the first time have transformed a human embryonic stem cell into a critical type of neuron that dies early in Alzheimer's disease and is a major cause of memory loss.
Discovery of schedule for circuit formation in the hippocampus
Neurobiologists from the Friedrich Miescher Institute for Biomedical Research have determined the schedule of neuronal circuitry assembly in the hippocampus. As published online in Nature Neuroscience, they ...
Moderate aerobic exercise in older adults shown to modify brain hippocampus, improve memory
A new study shows that one year of moderate physical exercise can increase the size of the brain's hippocampus in older adults, leading to an improvement in spatial memory.
Little-known growth factor enhances memory, prevents forgetting in rats
A naturally occurring growth factor significantly boosted retention and prevented forgetting of a fear memory when injected into rats' memory circuitry during time-limited windows when memories become fragile and changeable. ...
Memories take hold better during sleep: study
The best way to not forget a newly learned poem, card trick or algebra equation may be to take a quick nap, scientists surprised by their own findings reported Sunday.
Brain changes explain why teens have no fear
The brain undergoes changes in adolescence that suppress fearful experiences learned in childhood, said a study released Monday that could explain why teenagers act so brashly at times.
'UnZIPPING' zinc protects hippocampal neurons
Zinc ions released at the junction between two neurons (called a synapse) are important signals, but when too much zinc accumulates, cells become dysfunctional or die.