חישוביות וקוגניציה א' 06118. “men ought to know that from nothing else but...

06118חישוביות וקוגניציה א'

“Men ought to know that from nothing else but thence [from the brain] come joys, delights, laughter and sports, and sorrows, griefs, despondency, and lamentations. And by this, in an special manner, we acquire wisdom and knowledge, and see and hear, and know what are foul and what are fair, what are bad and what are good, what are sweet and what unsavory.”

Hippocrates, 460BC-370BC

What are the questions?

What are the questions?5. What is a neuronal map, how does it arise, and what is it good

for?

6. What is the role of top-down connections?

8. What is the origin and functional properties of irregular activity?

11. What is the formal computation in early vision?

12. Are neurons adapted for specific computations?

13. How can neural systems compute in the time domain

14. How common are neural codes?

15. How does the hearing system perform auditory scene analysis?

22. Do qualia, metaphor, language, and abstract thought emerge from synesthesia ,

23. What are the neural correlates of consciousness?

What are the challenges?

The brain operates on multiple temporal and spatial scales

10-9 10-6 10-3 100 103 106 109 (sec)

sound localization

Barn owlOrmia ochracea (fly)

humans

spike

persistent activity

protein synthesis

protein turnover

lifetime memories

What are the challenges?

The brain operates on multiple temporal and spatial scales

10-9 10-6 10-3 100 (m)

ionicchannel

synapse soma ofneuron

fMRI resolution

length of axon

hypercolumn

vesicle

The approach

• Proper level of abstraction

• Mathematical models

Mechanistic vs. normative questions

5. What is a neuronal map, how does it arise, and what is it good for?

6. What is the role of top-down connections?

8. What is the origin and functional properties of irregular activity?

11. What is the formal computation in early vision?

12. Are neurons adapted for specific computations?

13. How can neural systems compute in the time domain

14. How common are neural codes?

15. How does the hearing system perform auditory scene analysis?

22. Do qualia, metaphor, language, and abstract thought emerge from synesthesia ,

23. What are the neural correlates of consciousness?

The approach

• Mechanistic models (‘how’ questions)

• Functional models (‘why’ questions’)

SyllabusComputation and Cognition A:

• Dynamics of neural networks

• Multistability

• Oscillations

• Associative memory

• Supervised learning

• Binary perceptron

• Linear perceptron

• Back-Propagation

• Unsupervised learning

• PCA

• Clustering

• Reinforcement learning

SyllabusComputation and Cognition B:

• Search algorithms

• Games

• Reinforcement learning

• Probabilistic models of Cognition

• Motor control

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06118חישוביות וקוגניציה א'

yonatan@huji.ac.il יונתן לוינשטיין מרצה:

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