1. CS 182 Sections 101 & 102 slides created by: Eva Mok (emok@icsi.berkeley.edu)emok@icsi.berkeley.edu modified by JGM Jan. 25, 2006

2. Annoucements a1 is due at 11:59 on Monday Remember to submit it as ‘a1’ We’ll get to hw questions in a minute a2 out on 1/31 quiz on 2/7

3. Where we stand Last Week –Intro and Brain basics This Week –Neural Development –Psycholinguistics Coming up –Neural Nets and Backprop

4. a1 questions? I realize some of the wording is confusing…

5. Before we move on to new material How does the brain work?

6. Quiz 1.What is the significance of the amoeba analogy? 2.Why is there a 1ms delay between neural firings? 3.What is the significance of the frog’s inability to compensate for the surgery? 4.Why is neural development crucial to our understanding of the brain’s role in language production? (i.e. What’s the point of yesterday’s lecture?)

7. 5 levels of Neural Theory of Language Cognition and Language Computation Structured Connectionism Computational Neurobiology Biology MidtermQuiz Finals Neural Development Triangle Nodes Neural Net Spatial Relation Motor Control Metaphor SHRUTI Grammar abstraction

8. Key Points from last lecture Three stages of development –Prenatal –Postnatal fine-tuning –Learning Humans come pre-wired for learning –Some plasticity Activity dependent fine tuning Long term memory Pre-wiring biases the way we learn