The amygdala, which is near the hippocampus
and shares some emotion and memory chores with it, "showed absolutely no difference between groups," Bellgowan says.
Propylthiouracil treatment reduces long-term potentiation in area CA1 of neonatal rat hippocampus
The cortex can't do it alone, it needs input from the hippocampus
," Wiltgen said.
He said that they believe that the hippocampus
provides the necessary environmental cues, which are transmitted to the cortex where learning-dependent associations take place.
When the researchers activated the connection between cells in the amygdala and the hippocampus
, the mice spent more time at the edges of an enclosure, suggesting they felt anxious.
Those with no neurogenesis didn't freeze as much, indicating that recall still depends on the hippocampus
if new neurons aren't being supplied.
But the question remains: Could the smaller volume of the hippocampus
result from stress, or could it be an inborn trait that is a risk factor for PTSD?
When they compared the chemical makeup of the areas known to generate new neurons in the hippocampus
with other parts of the brain, the team discovered that astrocytes in the hippocampus
were sending one signal to the stem cells and that those from the rest of the brain were sending a different signal to stem cells.
Under normal circumstances, memories ``recorded'' by the hippocampus
are later sent into the temporal lobes for processing and storage.
So, if you remember your teachers' names from last year, you're using the hippocampus
The Monterey Institute for Technology and Education (MITE) today announced the official launch of HippoCampus
TEHRAN (FNA)- In work that reconciles two competing views of brain structures involved in memory and spatial perception, researchers conducted experiments that suggest the hippocampus
-- a small region in the brain's limbic system -- is dedicated largely to memory formation and not to spatial skills, such as navigation.