Then the researchers surgically removed the pigeons' hippocampi
and released the birds in another new area.
The overall size of the hippocampus did not predict recollection, as larger posterior hippocampi
were offset by smaller anterior hippocampi
Dam (25) counted neural cells in normal human hippocampi
and found that the mean densities did not differ significantly between two sides in CA1 and the dentate gyrus (DG).
The rats were anesthetized with 1% sodium pentobarbital, decapitated, hippocampi
was taken out in an icy environment, weighed, put in EP tube, and measured the 5-HT by HPLC with electrochemical detection as previously described (Vasconcelos et al.
To read spatial memories, the British scientists studied the hippocampi
(that's the plural of hippocampus) of the participants.
But questions remained: Did the experience of navigating London's complex system of streets change their brains, or did only the people with larger hippocampi
succeed in becoming cab drivers?
Patients 1 and 2 underwent stereotactic placement of bilateral depth electrodes in the hippocampi
(RTD1 to RTD6 along the right hippocampus and LTD1 to LTD6 along the left hippocampus, with LTD1 adjacent to the left amygdala and RTD1 adjacent to the right amygdala),subdural strip electrodes bilaterally on the orbitofrontal cortex (electrodes LOF1 to LOF4 and ROF1 to ROF4, with LOF1 and ROF1 being most mesial and LOF4 and ROF4 most lateral), and subtemporal strips bilaterally on the temporal cortex (LST1 to LST4 and RSTI to RST4, with LST1 and RST1 being most mesial and LST4 and RST4 most lateral).
Blocking neurogenesis impaired mice's ability to remember a maze for more than week, while mice with intact hippocampi
remembered the maze two weeks after learning to run it.