Unformatted text preview: Memory and the Basal Ganglia!
A form of nondeclarative memory that involves the learning of a variety of motor and cognitive
skills.! Tower of Hanoi! Basal Ganglia! Procedural memory is the "how to" memory. For example how to ride a bike. Often
times procedural memory is very important in motor actions and motor plans, which is
why we see the basal ganglia is involved. It can also do cognitive things, for example
reading is very automatic. People who have damage to the basal ganglia, for example
Parkinson's patients, will start to lose the ability to learn new procedures. And they can
start to lose the memory for things that had been well learned in the past. And yet their
episodic memory is completely intact. Thus we can see a double dissociation, where
we have patients who have lost episodic memory but procedural is intact, while
Parkinson pateints have episodic intact but lost procedural memory. Theory of Multiple Memory Systems!
Memory is not a single brain system, but multiple systems with different psychological
functions and different underlying brain structures.! Priming and Sensory Cortex!
A form of nondeclarative memory in which a behavioral response is facilitated after repeated
exposures to a stimulus.! Complete these word stems:!
obs-----! obstruct! pref------! prefrontal! 52:00 Priming is one of those memory systems that people are not
very familiar with. You can think of this as a memory system that is
the facilitation of things that have occurred before. tran-------! tranquility! hippo------! hippocampus! Priming has a robust effect, and typically see a difference in
reaction/responding time. Somehow the system has kept track of
the ﬁrst occurrence of that stimulus. Occurs for all sorts of stimuli
(auditory, visual, etc)
The amnesia patients with damage to the MTL will not remember
seeing the word before, but will still get this priming effect. At the
advent of fMRI and EEG, we began to see a neural correlate of this
priming as well, and this is called repetition suppression, where you
get a reduced BOLD effect the 2nd time being exposed to the word.
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- Fall '11
- temporal lobe, medial temporal lobe, memory impairment, different underlying brain