3 ms·
Related: place cells. If a rat is in a room, there are cells that will fire when it's in a specific place. The specifics are pretty cool! https://en.wikipedia.
by ced 11y ago
Related: place cells. If a rat is in a room, there are cells that will fire when it's in a specific place. The specifics are pretty cool!
https://en.wikipedia.org/wiki/Place_cell https://en.wikipedia.org/wiki/Place_cell
https://en.wikipedia.org/wiki/Grid_cell https://en.wikipedia.org/wiki/Grid_cell
- sawwit 11y agoAlso related, but not yet confirmed: "Time cells", which are also located in the hippocampus: http://www.nature.com/nrn/journal/v15/n11/abs/nrn3827.html http://www.nature.com/nrn/journal/v15/n11/abs/nrn3827.html One can possibly think of the hippocampus as a 'space-time integrator' that continuously indices high-level activation patterns from the cortex and stores them much like a log book. Memories in the hippocampus last minutes to months, after which they are either transferred to long-term memory in the cortex or lost.
- FHorse 11y agoOne can also think of the hippocampus simply as a working memory - short term content addressable memory. If the rat happens to be working on a spatial task, like in a maze, you get place/grid cells. If it happens to be working on a timing task, time cells. The content is simply task dependent.
- deleted 11y ago[deleted]
- sawwit 11y agoYes, the HC likely plays a role in working memory for associative, declarative and spatial information. Most of the working memory is believed to reside in the (prefrontal) cortex, though; in patterns of synaptic depletion (less than 15-30 seconds) and based on the 'hot potato' principle in which processes in different modules mutually re-activate previous states to manipulate them.