Psychological trauma leaves a trail of damage in a child's brain, say scientists. Their new study gives the first direct evidence that children with symptoms of post-traumatic stress suffer poor function of the hippocampus, a brain structure that stores and retrieves memories. The research helps explain why traumatized children behave as they do and could improve treatments for these kids.

Story Summary: He looked for methylation on three regions of histone H3 that have been shown to actively regulate gene expression. The hippocampus is involved in episodic memory, so you would expect it to be sensitive to episodic experiments like this, more so than the motor regions, for instance, says Hunter, who worked on the project with Rockefeller scientists Bruce S. McEwenand Donald W. ...

 Neuronal Transporters Regulate Glutamate Clearance, NMDA Receptor Activation, and Synaptic Plasticity in the HippocampusAnnalisa Scimemi, Hua Tian, and Jeffrey S. DiamondJournal of Neuroscience 29 (46), 14581-95 (18 Nov 2009)info:doi/10.1523/JNEUROSCI.4845-09.2009Posted by MMargeta to NMDAR plasticity electrophysiology on Mon Nov 23 2009 at 19:35 UTC | info | related

... conditions such as psychotic disorder, dementia, PTSD are also associated with a small hippocampus. It’s still unclear whether these conditions have a common pathway affecting the hippocampus ... in Depressed Patients Psychiatrists in the United Kingdom and The United States...Hippocampus and Depression We used to believe that brain tissue couldn’t regenerate,... Related posts brought ...

... , freezing up any time they were placed in the chamber. This type of memory usually hangs out in the hippocampus for less than a month: When the researchers injected the brains of normal rodents with a ... is not quite convinced that the specific job of new neurons is to clear the hippocampus for new information. An alternative explanation, he says, is that new neurons simply enable the hippocampus ...

... slower to fight off invaders. Nerve cells in the hippocampus, a brain region involved in memory, atrophied ... studies have shown, can shrink nerve cells in the hippocampus and halt the creation of new hippocampal neurons. These changes are associated with aging ... stress of being servile to their alpha counterparts causes damage in the hippocampus. And dominant monkeys who are repeatedly moved from social ...

... more errors on the recall part of the test and showed less hippocampus activity than control subjects doing the same task. Subjects with ... a specific set of PTSD symptoms: Such impairment of the hippocampus was strongly correlated with “avoidance and numbing&# ... future, physicians and scientists may be able to use fMRI scans of the hippocampus to identify children who are at high risk of PTSD ...

... to find a place to store the old ones somewhere. Scientists have known that memories first form in the hippocampus and are later transferred to long-term storage in other parts of the brain. For some amount of time the memory resides both in the hippocampus and elsewhere in the brain. What's not been known is how, after a few months or years, the memory is gradually ...

... on mice, not humans. But think about it. Geneticists want to know how some of those genes are tied to the development of the hippocampus, a component of the brain involved in long term memory and spatial ... 39;t want the flu, and vaccination is a priority for pregnant women. But what will the hippocampus of your baby's brain look like? You're not going to be given the live virus up the nose ...

... investigated how gamma waves in particular were involved in communication across cell groups in the hippocampus. What we found could be described as a radio-like system inside the brain. The lower frequencies ... hard for the latest news while trying to filter out the unwanted music. The hippocampus does this more efficiently. It simply tunes in to the right frequency to get the station it wants. As ...

... , specifically anterograde amnesia, neuroscientists began to wonder if they had accidentally struck upon evidence that the hippocampus was an important brain region involved in memory. Anterograde amnesia is the ... did not remember ever meeting them! The fact that Molaison only began having these problems after his hippocampus was removed, combined with evidence of similar memory deficits in other ...

... to form. And while much recent research has focused on the correlative links between the hippocampus and memory consolidation, what had not been identified was the specific processes that cause long-term ... to learn from the training, as compressed information was unable to leave the hippocampus and transfer to the neocortex. Identification of a specific brain pattern responsible for strengthening ...

... promotes the gradual loss of memory traces from the hippocampus as those memories are transferred elsewhere in the brain for permanent storage. ... difficulties in acquiring new information because the storage capacity of the hippocampus is 'occupied by un-erased old memories.' ... birth of new neurons, sped up the decay rate of hippocampus-dependency of memory, without any memory loss." ...

... on the isolated Azores archipelago in the eastern Atlantic. Two species of seahorse Hippocampus guttulatus and Hippocampus hippocampus are native to Europe and the Azores, an autonomous region of Portugal. & ... DNA of the seahorse with the two native species and found it was a lined seahorse Hippocampus erectus usually found along the Atlantic coast and Caribbean sea coasts of North, Central and ...

... on the isolated Azores archipelago in the eastern Atlantic. Two species of seahorse Hippocampus guttulatus and Hippocampus hippocampus are native to Europe and the Azores, an autonomous region of Portugal. The ... of the seahorse with the two native species and found it was a lined seahorse Hippocampus erectus usually found along the Atlantic coast and Caribbean sea coasts of North, Central and ...