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57669
Basal Ganglia
Description
Biological (Memory & Learning) Mind Map on Basal Ganglia, created by n.c.wetmore on 26/04/2013.
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biological
memory & learning
biological
memory & learning
Mind Map by
n.c.wetmore
, updated more than 1 year ago
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Created by
n.c.wetmore
over 11 years ago
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Resource summary
Basal Ganglia
Hippocampus isn't responsible for all learning and memory
most important for episodic memory - develops from a single experience
After damage to hippo, learning still occurs but gradually over repeated experiences
Hard to put into words
Gradual learning depends on basal ganglia
Implicit or habit learning
Each trial given 3 or 4 pieces of info - pictures and you have to predict weather to be either sunny or rainy
By trial and error, discover none of pictures is completely accurate but partly accurate
By paying attention to any one picture, you could guess correctly most of the time but attending to all 3, you increase your accuracy
People adopt a strategy of responding based on one of pics getting correct answer
Based on declarative memory
Gradually basal ganglia learned the pattern through repetition and established a habit
If we test those wit Parkinsons they perform normally but have intact hippocampus
Don't show any gradual improvement that requires basal ganglia
On other tasks, if they don't form explicit declarative memory, they don't improve at all.
they don't learn habits and implicit memories
Amnesia from hippocampal damage
perform randomly on weather task for many trials
No declarative memories and can't remember that any particular symbol is signal for one type of weather
if they continue long enough, gradual improvements show supported by basal ganglia
If signals switch, they are slow at switching their response
When people learn complex task under conditions of extreme discretion 0 similar to those with damage to hippo
Gradual learning under these circumstances depends on basal ganglia
Research results suggest hippo is more important for declarative memory
Basal ganglia more important for procedural memory
no longer believe strict separation between the two
Nearly all tasks activate both areas
Albouy et al (2008)
Possibly to shift from one type of memory to the other, even on same task
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