Difference between revisions of "MemoryFormation"
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Revision as of 01:27, 16 June 2015
Memory Formation Research
@@Home -> NeoCortexResearch -> MemoryFormation
Memory Prediction research covers using HTM/Memory Prediction theory for memorizing and recognizing complex patterns, produce internal representation.
Terms
- *short-term memory* - lasts for max 18 seconds
- *long-term memory* - lasts for day or years (undergo forgetting process) - declarative and procedural
- *declarative memory* - all memories that are consciously available - episodic and semantic
- *episodic memory* - memory for specific events in time
- *semantic memory* - knowledge about the external world
- *procedural memory* - how to perform certain motor behaviour
Long-term memory (LTM)
as per [[1]]:
- *declarative memory* - encoded by hippocampus (also by enthorinal and perirhinal) but consolidated somewhere else - probably in temporal cortex
- *procedural memory* - encoded and probably stored in cerebellum / striatum
- *emotional memory* - related to amygdala
Sensory Neocortex
- recognize and predict functions, as per Jeff Hawkins
- long-term memory formation by hippocampus - how it is related to neocortex?
- do we have short-term memory in neocortex?
- Current Understanding*:
- information is supplied by discrete events (not as ongoing flow) - e.g. saccades, which supply fragmentary information to visual neocortex 3 times per second
- neocortex holds generalization structures, averaged perceived information, not episodic memory
- association cortex and frontal cortex (holds feelings) supply feedback via cingulate gyrus to sensory cortex and hippocampus
* associations and emotionally stressed data are stored easier
- temporal cortex (TC) lies between visual sensory cortex (VC) and hippocampus (HC)
* LTM is not stored by hippocampus, but hippocampus is absolutely required to create LTM as per HM patient * hippocampus is not required to keep short-term memory (18 seconds) * most appropriate place for LTM is temporal cortex * VC perceives primary sensory information and transforms to stable internal representation * VC -> TC flow supplies flow of internal representations, or signal of inability to recognize/predict; TC -> VC is unclear * HC -> TC flow represents control of memorising by hippocampus