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To remember and forget: lecture 3

Taeyoon Choi
September 23, 2014

To remember and forget: lecture 3

Taeyoon Choi

September 23, 2014


  1. • Lecture 3 • Affect and emotion ! • Lecture

    2 • Plasticity and computability !
  2. • 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
  3. An action potential is a very rapid change in membrane

    potential that occurs when a nerve cell membrane is stimulated.
  4. 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).
  5. 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.
  6. `

  7. A circuit is a group of neurons that are linked

    together by synaptic connections. !
  8. A system is a complex circuit that performs some specific

    functions...a series of hierarchically arranged circuits linked together by synaptic connections…
  9. ! Optic nerve, sees a light, triggers bundle of 1

    million output wires to the brain. o
  10. This strategy, known as rate coding, is used in different

    ways in different brain systems, but it is common throughout the brain.
  11. Each of these populations streams its own data, in parallel,

    to different processing centers upstream from the eye.
  12. the amygdalae perform primary roles in the formation and storage

    of memories associated with emotional events.
  13. ! 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.