Comments and questions about the APOD
on the main view screen.
- :---[===] *
- Posts: 2663
- Joined: Sun Apr 22, 2007 12:07 am
Nice image of it...
- Vacationer at Tralfamadore
- Posts: 17033
- Joined: Mon Jan 21, 2008 1:57 pm
- Location: Alexandria, Virginia
<<The hippocampus (from the Greek ἱππόκαμπος, "seahorse") is a major component of the brain of humans and other vertebrates. Humans and other mammals have two hippocampi, one in each side of the brain. The hippocampus is part of the limbic system, and plays important roles in the consolidation of information from short-term memory to long-term memory, and in spatial memory that enables navigation. The hippocampus is located under the cerebral cortex in the allocortex, and in primates it is in the medial temporal lobe
In Alzheimer's disease (and other forms of dementia), the hippocampus is one of the first regions of the brain to suffer damage; short-term memory loss and disorientation are included among the early symptoms. Damage to the hippocampus can also result from oxygen starvation (hypoxia), encephalitis, or medial temporal lobe epilepsy. People with extensive, bilateral hippocampal damage may experience [an] inability to form and retain new memories.
In rodents as model organisms, the hippocampus has been studied extensively as part of a brain system responsible for spatial memory and navigation. Many neurons in the rat and mouse hippocampus respond as place cells: that is, they fire bursts of action potentials when the animal passes through a specific part of its environment. Hippocampal place cells interact extensively with head direction cells, whose activity acts as an inertial compass, and conjecturally with grid cells in the neighboring entorhinal cortex.>>
- Posts: 5427
- Joined: Wed Jul 27, 2005 3:41 pm
- Location: Nebraska
Very Nice! Kudos to the photographer!
Smile today; tomorrow's another day!
- Science Officer
- Posts: 125
- Joined: Fri Mar 22, 2019 2:19 pm
Today's APOD reminds me;
last week I first heard of "dark constellations" of the night skies in the Southern Hemisphere.
Some were associated with aboriginal peoples of Australia.
Does anyone have more information or links so I can learn more about them?
Thanks in Advance