With the notable exception of the RBANS attention subscale score, the volume of the left and right hippocampi
were not significantly associated with any of the other cognitive measures.
Three weeks of administrated the depression model rats with fluoxetine, low-dose, medium-dose and high-dose of Rhodiola rosea extract resulted in that the number of BrdU positive cells at hippocampi
in untreated model group and negative control model group (Fig.
2000) Navigation-related structural change in the hippocampi
of taxi drivers.
MRI scans revealed that 25 players with previous concussions had hippocampi
that averaged just three-quarters the size of those of men who hadn't played football or soccer.
The overall size of the hippocampus did not predict recollection, as larger posterior hippocampi
were offset by smaller anterior hippocampi
Alternatively, it is possible that smaller hippocampi
reflect early life stress or other environmental factors that compromise resilience in adulthood.
Neither untreated mice nor Prozac-treated mice whose hippocampi
have been irradiated with X rays to prevent new neuron formation seek out the food.
In cases of amnesia, patients are unable to form long-lasting memories due to an injury to the hippocampi
, a pair of brain structures located in the depth of the temporal lobes.
When the researchers irradiated the rats' hippocampi
with X rays, which kill off new neurons, animals given HU210 responded to these tests much as did animals that didn't receive the drug.
Then, with the help of magnetic resonance imaging, they conducted a volumetric analysis of the subjects' left and right hippocampi