CGSC 1001 Lecture Notes - Lecture 2: Sensory Memory, Basal Ganglia, Long-Term Memory

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Mysteries of the mind: CGSC1001
Lecture 2
Learning, Memory, and Representation
Cognitive systems:
-Transforms things in the environment to internal representations.
Environment →perception → cognitive system → action → environment (back to
start)
-Turns desires to act into physical changes in the environment.
Ex; We percept something, we think of acting on it, we act on it, then we see it. Etc.
How the animal/human mind works:
The world → (perception) → senses (brain, action of body) → the world (back to start)
Robotics:
The world → (perception) → sensors, actuators, (action) → the world (back to start)
Disembodied software:
User input → (perception) → Updating database → amazon.com’s recommender
system → display to screen → (action) → user input (back to start)
Distributed cognition:
The world → Sensors, sensory, organs, etc → People and artifacts → action
perception
-Cognition is a manipulation of representations
-Representations are stored in memory
Animal/human: Brain, long-term memory, short-term memory
Software: Databases, symbols
Distributed system: Paper, brain, disk, environment manipulation
-Human memory of facts and perception (not skills)
Sensory memory → short-term memory → long term memory
∙Sensory memory: like a scratch pad (for vision) or a bit of recording tape (for
hearing), that can be overwritten with new things. It is re-written every few seconds
by new perceptions.
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