03_Evolution+2 - EvolutionofLearning& Memory2:Operant...

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Memory 2: Operant  Conditioning
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Two Kinds of Conditioning n Classical Conditioning (Extension of reflexes) n Contingent CS – UCS pairing results in CS  eliciting response. n Is not voluntary action n Tone – air puff pairing n Operant Conditioning    (Learning) n Reward increases likelihood of action n Is voluntary action n Bar press to obtain food or water
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Response versus Place  Learning Controversy n What does a rat learn who learns to run  a maze? n A sequence of actions, turn-left, turn-right,  etc. n A mental map of the maze that guides his  actions
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Habit versus Instrumental  Learning of a Maze n Instrumental Learning  (Hippocampus) n Rat learns a mental map that guides  actions n Early declarative stage n Habit Learning  (Striatum) n Rat learns a sequence of actions, turn left,  turn right etc. n Later autonomous stage
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(McGaugh et al.) n After week of practice turning right in T-Maze center  bar is flipped. n Habit learning predicts rat will still turn right and miss  reward. n
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03_Evolution+2 - EvolutionofLearning& Memory2:Operant...

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