hippocampus


Also found in: Dictionary, Thesaurus, Medical, Acronyms, Wikipedia.
Related to hippocampus: amygdala, hypothalamus, limbic system

hippocampus

[‚hip·ə′kam·pəs]
(anatomy)
A ridge that extends over the floor of the descending horn of each lateral ventricle of the brain.

Hippocampus

[‚hip·ə′kam·pəs]
(vertebrate zoology)
A genus of marine fishes in the order Gasterosteiformes which contains the sea horses.

hippocampus

fabulous marine creature; half fish, half horse. [Rom. Myth. and Art: Hall, 154]
References in periodicals archive ?
These findings are all the more unexpected because it was not appreciated that the preterm hippocampus was already capable of these learning processes.
Ramirez and his team artificially activated the memory cells at the bottom part of the brains hippocampus. This caused negative memories to become even more debilitating.
Using a technique called optogenetics, Chen and Ramirez mapped out which cells in the hippocampus were being activated when male mice made new memories of positive, neutral, and negative experiences.
The objects also were represented in the hippocampus, but there was a clear distinction between these and the cells that fired electric pulses in response to other bats.
In this study, we focused on the hippocampus as a target for intervention, if limbic-auditory interactions could be shown in tinnitus, and found that SA significantly increased the SFR of the hippocampus, indicating involvement of the hippocampus in tinnitus.
That study was described by experts as "sobering," because it indicated the human hippocampus is largely generated during fetal brain development.
For stereological analyses, six sections of the hippocampus were chosen from each side (Bregma -3.3, -3.6, -3.9, -4.2, -4.5, and -4.8 mm).
MRI test results showed that only the participants in the video-game cohort saw increases in grey matter volume in the hippocampus and cerebellum, and their short-term memory was also improved, according to the study.
"That's why we decided to do a full neuro-imaging study, scanning the brains of habitual players of action video games and comparing them to non-players, and what we saw was less grey matter in the hippocampus of habitual players."
Neuroscientists from Massachusetts Institute of Technology studied the neural circuits involved, and found that memories don't transfer from the hippocampus to the neocortex, but instead, form simultaneously in both those regions of the brain.
Todos los caballitos de mar se agrupan en un solo genero (Hippocampus Rafinesque, 1810), dentro del cual Lourie et al.
demonstrated that MPTP-induced dopaminergic damage had time-dependent effects; the neurotoxic effect was evident mainly in the ventral region of the hippocampus [4].