To remember and forget: lecture 3

Transcript

1. To remember and forget: Memory and machine Lecture 3 Taeyoon Choi NYU ITP 9.22 2014
3. • Lecture 3 • Affect and emotion ! • Lecture 2 • Plasticity and computability !
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
5. 1. Central Nervous System
10. 2. Synapse
11. dendrites cell body axons information flow receptive transmitting
14. Neurotransmitters are ! Gultamate GABA Acetylcholine Dopamine Serotonin
16. 3. Action potentials a.k.a Spike
19. An action potential is a very rapid change in membrane potential that occurs when a nerve cell membrane is stimulated.
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).
24. 4. long term potentiation
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.
30. 5. Circuit and System
31. `
32. A circuit is a group of neurons that are linked together by synaptic connections. !
35. A system is a complex circuit that performs some specific functions...a series of hierarchically arranged circuits linked together by synaptic connections…
42. ! Optic nerve, sees a light, triggers bundle of 1 million output wires to the brain. o
43. This strategy, known as rate coding, is used in different ways in different brain systems, but it is common throughout the brain.
44. Each of these populations streams its own data, in parallel, to different processing centers upstream from the eye.
45. 5. Limbic system
46. Frontal lobe Parietal lobe medial temporal lobe occipital lobe
48. Amygdala Hippocampus
49. Amygdala Hippocampus
56. the amygdalae perform primary roles in the formation and storage of memories associated with emotional events.
70. • 6. Emotion, feeling and affect
71. feeling https://www.youtube.com/watch?v=VmO_0tIGo-4
73. emotion feeling warm and fuzzy
76. Robert Plutchik’s wheel of emotion
79. Affect consciousness
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.