Tag: "hippocampus" at medical news

ADHD appears to be associated with depressed dopamine activity in the brain

...evidence of reduced [11C]raclopride binding in the hippocampus and amygdala in those with ADHD. These areas of the brain are part of the limbic system, involved in emotional responses as well as consolidating and retrieving memories. The findings of reduced dopamine release in subjects with ADHD are consistent...

New research shows why too much memory may be a bad thing

...ice, found that the absence of neurogenesis in the hippocampus improves working memory, a specific form of short-...ther, our findings suggest that new neurons in the hippocampus have different, and in some cases, opposite roles in distinct types of memory storage, and that exce...

Severe PTSD damages children's brains, Stanford/Packard study shows

...likely to experience a decrease in the size of the hippocampus - a brain structure important in memory processing...ffering from PTSD. They measured the volume of the hippocampus at the beginning and end of the 12- to 18-month study period. After correcting for gender and for ph...

Stem cell activity deciphered in the aging brain

...fluorescent tags to the neuronal stem cells in the hippocampus in young, middle-aged and old rats. They found that in young rats, the hippocampus contained 50,000 stem cells -- and, significantly, this number did not diminish with aging. This fin...

Heavy, chronic drinking can cause significant hippocampal tissue loss

...ption. A new study has found a reduction in total hippocampus volume among alcoholics. This suggests that heavy ...an cause significant hippocampal tissue loss. The hippocampus is a brain structure vital to learning and memory. It also appears vulnerable to damage from chroni...

Researchers use novel three-dimensional imaging technique

...racked how Alzheimer's disease spreads through the hippocampus -- the area of the brain linked with memory -- in ...rain cells. They found that three areas within the hippocampus of Alzheimer's patients show more atrophy compared with those in patients having amnestic mild cogni...

Study offers new clues to brain-stomach interaction in overeating

... 18 percent higher during gastric stimulation. The hippocampus is linked with emotional behaviors, learning and m... and processing of sensory and motor impulses. The hippocampus also plays a role in the retention of memories related to prior drug experiences in addicted individ...

Microscopic brain damage detected in early Alzheimer's disease

...he two cerebral hemispheres. The ADC values in the hippocampus were significantly correlated with worse memory performance scores. "The results have supported our objective to develop a computer-based analysis technique that can analyze different regions in the entire brain, to provide a comprehensive evaluati...

Anticipation plays a powerful role in human memory, brain study finds

...wo key regions of the brain - the amygdala and the hippocampus - become activated when a person is anticipating a...ith the formation of emotional memories, while the hippocampus helps the brain form long-term recollections, Nitschke says. The researchers studied the brain act...

Childhood sleep apnea linked to brain damage, lower IQ

...type of MRI, researchers identified changes to the hippocampus and the right frontal cortex. Next, using IQ tests... association between changes in the neurons of the hippocampus and the right frontal cortex and IQ and other cognitive functions in which children with OSA score p...

Neurological effects of childhood sleep apnea

...te ratio of N-acetyl aspartate/choline in the left hippocampus and right frontal cortex, indicating possible neuronal injury in these areas. Symptomatic childhood sleep-disordered breathing includes a range of conditions in which children have difficulties with breathing when they are asleep. The conditions ra...

Boosting key protein in brain could improve seizure treatment, Stanford study finds

...d production of neuropeptide Y in the thalamus and hippocampus is still a puzzle. Brill said there are probably intermediate steps, a cascade of signals, leading to the boost in the neuropeptide. "If you can identify the pathway that valproic acid uses to increase the neuropeptide Y, then maybe you can figure ...

Drug triggers body's mechanism to reverse aging effect on memory process

...pakines or one that did not. They then studied the hippocampus region of the rats' brains, an area critical for memory and learning. They found that in the ampakine-treated rats, there was a significant increase in the production of brain-derived neurotrophic factor (BDNF), a protein known to play a key role in ...

Multi-tasking adversely affects brain's learning, UCLA psychologists report

...how the types of memory are related. The brain's hippocampus -- a sea-horse-shaped structure that plays critica...aid. For the task learned without distraction, the hippocampus was involved. However, for the task learned with the distraction of the beeps, the hippocampus was n...

Long-term ibuprofen regimen after brain injury worsens cognition in animal study

...igns of difference in the extent of atrophy in the hippocampus or cortex of treated versus non-treated injured rats. Although ibuprofen treatment did reduce chronic inflammatory changes in the brains of injured animals, that did not seem to have an influence over the extent of damage to the brain regions associa...

Memory loss affects more of the brain than previously thought

...ntal cortex (during formation and retrieval), left hippocampus (during retrieval) and left cerebellum (during formation) and an increased level of activation in the posterior frontal lobes (during retrieval). "These findings suggest that we should be paying closer attention to frontal lobe function in detecting ...

Amnesiac study offers insights into how working memory works

...the University of Pennsylvania determined that the hippocampus -- a seahorse shaped structure in the middle of t...Neuroscience, overturn the established view of the hippocampus and offers insight on how the brain forms and recalls memories by piecing together related bits of e...

Researchers map links between size of hippocampus and progression to Alzheimer's dementia

...CLA researchers sought to test the theory that the hippocampus -- the area of the brain that processes memory -- ...ent, they found that the patients with the smaller hippocampus did, in fact, face an increased risk of developing dementia. IMPACT: The technique helps physicians ...

The brain's motivation station

... mesolimbic region as well as the learning-related hippocampus in the medial temporal lobe (MTL) of the brain. Activation prior to scene visualization suggests that the brain actually prepares in advance to filter incoming information rather than simply reacting to the world. Activation of the MTL is associated...

UCI researchers identify first compound to block progression of Alzheimer's disease

...B reduced the amount of plaques and tangles in the hippocampus and the cortex of the mice, and improved cognitive...portance of cholinergic activation of cells in the hippocampus and cerebral cortex that are essential for creating and preserving memories," said James L. McGaugh,...

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