To remember and forget: lecture 3

Transcript

1. To remember and forget:
   Memory and machine
   Lecture 3
   Taeyoon Choi
   NYU ITP
   9.22 2014
   

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3. • Lecture 3
   • Affect and emotion
   !
   • Lecture 2
   • Plasticity and computability
   !
   

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4. • continuing on Lecture 2:
   • Plasticity and computability
   1. Central Nervous System
   2. Synapse
   3. Action potentials
   4. Long term potentiation
   5. Circuit and System
   6. Limbic system
   7. Emotion, feeling and affect
   8. Memory of love
   

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5. 1. Central Nervous System
   

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10. 2. Synapse
    

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11. dendrites
    cell body
    axons
    information
    flow
    receptive
    transmitting
    

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14. Neurotransmitters are
    !
    Gultamate
    GABA
    Acetylcholine
    Dopamine
    Serotonin
    

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16. 3. Action potentials
    a.k.a Spike
    

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19. An action potential is a very rapid change in membrane
    potential that occurs when a nerve cell membrane is
    stimulated.
    

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21. Specifically, the membrane potential goes from the resting
    potential (typically -70 mV) to some positive value (typically
    about +30 mV) in a very short period of time (just a few
    milliseconds).
    

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24. 4. long term potentiation
    

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25. long-lasting enhancement in signal transmission between two
    neurons that results from stimulating them synchronously. It is
    one of several phenomena underlying synaptic plasticity, the
    ability of chemical synapses to change their strength.
    

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30. 5. Circuit and System
    

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31. `
    

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32. A circuit is a group of neurons that are
    linked together by synaptic connections.
    !
    

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35. A system is a complex circuit
    that performs some specific
    functions...a series of
    hierarchically arranged circuits
    linked together by synaptic
    connections…
    

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42. !
    Optic nerve, sees a light, triggers bundle of 1 million output wires to the brain. o
    

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43. This strategy, known as rate coding, is used in different ways
    in different brain systems, but it is common throughout the
    brain.
    

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44. Each of these populations streams its own data, in parallel, to
    different processing centers upstream from the eye.
    

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45. 5. Limbic system
    

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46. Frontal lobe
    Parietal lobe
    medial temporal lobe
    occipital lobe
    

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48. Amygdala Hippocampus
    

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49. Amygdala Hippocampus
    

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56. the amygdalae perform primary roles in the formation and
    storage of memories associated with emotional events.
    

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70. • 6. Emotion, feeling and affect
    

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71. feeling
    https://www.youtube.com/watch?v=VmO_0tIGo-4
    

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73. emotion
    feeling warm and fuzzy
    

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76. Robert Plutchik’s wheel of emotion
    

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79. Affect
    consciousness
    

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80. !
    Affect is intensities coming together, moving each other,
    transforming and translating under or beyond meaning,
    beyond semantic or simply fixed systems, or cognitions, even
    emotions.
    

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