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Lesson 5 the role of the neuron in memory formation 2012 sh

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Lesson 5 the role of the neuron in memory formation 2012 sh

  1. 1. Lesson 5 - The role of Neurons in Memory formationFriday, 13 April 2012
  2. 2. Last lesson...... From which form of declarative memory is retrieval of information often more difficult? Why? 3 marksFriday, 13 April 2012
  3. 3. Last lesson...... From which form of declarative memory is retrieval of information often more difficult? Why? 3 marks Answer Retrieval of information is often more difficult from episodic memory.There memories are less well learned, and are more context dependent and state-dependent in nature.Friday, 13 April 2012
  4. 4. Todays lesson............ •Review the function of a neuron •Explain the role of the neuron in memory formation informed by the work of E. Richard Kandel!Friday, 13 April 2012
  5. 5. Revision - The NeuronFriday, 13 April 2012
  6. 6. Kandel found that any experience resulting in memory produces physical changes in the brain at the neuronal level, changes in structure and function of neurons.Friday, 13 April 2012
  7. 7. Kandel’s Research on the role of neurons Eric Kandel studies the sea slug Aplysia for the following reasons: •Very simple nervous system •Only 20,000 neurons •Largest neurons in the world and can be seen with the naked eyeFriday, 13 April 2012
  8. 8. Kandel’s experiments Studied simple learning and remembering of the gill- withdrawal reflex of Aplysia Observed changes at the synapse (i.e. point of communication by adjacent neurons) in the structure and function of neurons in three ways: •Release extra neurotransmitter •Increase number of receptor sites •Growth of new synapses These changes are called collectively Long Term PotentiationFriday, 13 April 2012
  9. 9. Long Term PotentiationFriday, 13 April 2012
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