Tag: "hippocampus" at medical news
Emotional memory study reveals evidence for a self-reinforcing loop
...synchronicity between activity in the amygdala and hippocampus
could go either way. The emotion enhances recollection, but at the same time by recollecting those events, you would also remember the emotional response. It could be like a loop in which the amygdala interacts with the hippocampus." According to Do...
Researchers discover link between insulin and Alzheimer's
...h factors are not produced at normal levels in the hippocampus
the part of the brain responsible for memory. The... were significantly reduced in the frontal cortex, hippocampus
and hypothalamus all areas that are affected by the progression of Alzheimer's. Conversely, in the ...
Potential treatment for Fragile X Syndrome demonstrated in fruit fly model
...ocated on the surface of neurons, including in the hippocampus
the memory and learning center in the brain. In turn, this increased activity compromises neurotransmission for memory-associated functions. Jongens and colleagues surmised that mGluR overactivity may be at the root of many of the Fragile X symptom...
Molecule important in cell construction also critical in learning and memory
...tion refers to the fact that if two neurons in the hippocampus
are active at the same time, the connection between them can be strengthened. This change, or potentiation, can last for hours to days. This may serve to lay a foundation for more permanent changes, such as the construction of new connections, or syn...
The mysteries of the emotions: The Good, Bad, and the Learned
...r minds control our emotions, and what role do the hippocampus
and amygdala play in anxiety and depression? To present the latest findings in this field and to discuss their implications, the New York Academy of Sciences is presenting a discussion, "Imaging Emotions: The Good, the Bad, and the Learned" on Feb...
Iris Murdoch's last novel reveals first signs of Alzheimer's disease
... the part of her brain associated with memory, the hippocampus
- a finding typical of Alzheimer's disease. The diagnosis was confirmed after her death in 1999, where a post mortem found a high density of plaques and tangles throughout her brain, with particularly severe involvement of the temporal lobes, areas c...
Cocaine addicts show reduced brain structure that underlies judgment
...illness and Alzheimer's disease, in which both the hippocampus
and amygdala show a loss in volume. The researchers cited studies indicating that the amygdala is involved in assessing the rewards or aversive aspects of goals, such as expecting negative outcomes of a course of action. "These observations are relev...
New compounds effective against Alzheimer's disease onset and progression
...l levels of synaptic dysfunction biomarkers in the hippocampus
and diminished amyloid plaque deposition. Consistent with the pathology changes, treatment with the aminopyridazines also attenuated behavioral deficits in the mice that are due to injury in the part of the brain called the hippocampus, a region tha...
New brain cells develop during alcohol abstinence, UNC study shows
...pronounced increase in new neuron formation in the hippocampus
within four-to-five weeks of abstinence. This included a twofold burst in brain cell proliferation at day seven of abstinence. "We looked at dividing cells after our four-day binge model of alcohol dependency and confirmed what we previously observed...
Nerve navigation findings prompt new direction for spinal cord research
...eurons to cross the midline, even in the cortex or hippocampus
of the brain," Dr. Xiong says. A receptor on the axon called DCC, or Deleted in Colon Cancer, responds to the signal from netrin. But why the axon knows to move in a certain direction once it sees that signal was an unknown, Dr. Xiong ...
OHSU study: Testosterone deprivation makes men forget
... "immediately get the information in, but then the hippocampus
can't consolidate it and send it off for storage,"...refrontal cortex doesn't participate, but it's the hippocampus
that's important for these results. After the information gets in, the hippocampus
and other nearby ...
Mothers have brains primed for care
...the structure and activity of the hypothalamus and hippocampus
as a result of motherhood. "The mammalian female brain expresses a great deal of plasticity and creativity in service to, and in support of, reproduction," says Kinsley. "In other words, mothers are made, not born." At least some parenting behavior...
Northwestern researchers pinpoint how false memories are formed
...bered. Two brain regions in particular -- the left hippocampus
and the left prefrontal cortex -- were activated more strongly for pictures that were later remembered than for pictures that were forgotten. These two brain areas have previously been understood to play a central role in memory. The new ...
National Institute on Aging, industry launch Alzheimer's disease neuroimaging initiative
...eas of the brain involved with memory, such as the hippocampus
(a part of the brain heavily involved in memory), ...the best ways of measuring this volume loss in the hippocampus
and other brain structures. PET scans assess brain function by measuring the rate of metabolism of g...
Lithium may protect neurons from radiation therapy
...f 5 Gy caused a massive amount of apoptosis in the hippocampus
but not in other areas of the brain. However, treatment of a mouse hippocampus
cell with lithium for a week prior to 3 Gy of radiation resulted in a 60 percent increase in cell su...
Highlights of Washington University Alzheimer's Research at National Conference
...ollowing few years. Changes in the shape of the hippocampus
also helped predict which individuals with Alzheimer's disease would respond well to a commercially available dementia drug, donepezil. Alzheimer's disease likely develops years before clinical symptoms arise. As many as 40 percent of elderly peop...
News tips from the Journal of Neuroscience
...in children, but not adolescents, with autism; the hippocampus
is enlarged at all ages Schumann et al. This week,...drome. While the cortical size was unaffected, the hippocampus
was slightly larger in autistic subjects than controls. Interestingly, the amygdala of children, but...
How brain gives special resonance to emotional memories
...ctures. Specifically, these structures include the hippocampus
and associated regions. Moreover, according to Dolcos, the analysis revealed a significant correlation between the strength of activity in the emotion- and memory-related brain regions. "We found evidence that the interaction between the emotional a...
Remembrance of smells past
...ad across different areas of the brain such as the hippocampus
and the olfactory cortex - the smell gateway of the brain. In Proust's story, protagonist Charles Swann is transported back to his childhood when the smell of a biscuit dipped in tea triggers memories from his past. Dr Jay Gottfried and colleagu...
How odors help make multimodal memories
... brackish seaweed." While researches know that the hippocampus
acts to associate sensory memories into a coherent...rved in the sensory-related brain regions, and the hippocampus
draws on those components to reconstruct the rich, ethereal experience that is a memory of things pa...
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