Psych 85_ Lecture Notes Week 1.docx - Wednesday April 3rd 2019 From the last class our mind computes Input emotions are also computations Firing neurons

# Psych 85_ Lecture Notes Week 1.docx - Wednesday April 3rd...

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Wednesday, April 3rd, 2019 From the last class: our mind computes! Input: emotions are also computations. Firing neurons, feel bad. 100 billion neurons How do minds compute: REPRESENTATIONS! 1- Symbols in the mind (neurons, binary code, etc) 2- Referents that are usually in the physical universe 3- Mapping between 1 and 2 (intentionality= directed at the object) Confusing because people think of intentionality as why you do it, but in Cognitive Science, intentionality refers to the mapping between symbols and referents. Tri-Level Hypothesis: IMPORTANT (Marr) Example: 4 x 4 -Computation: four is the input and 16 the output -Representation and algorithm: representation of four and representation of multiplying things and the algorithm is the solution (4 x 4 = 16). Or represented in binary code in computing devices such as calculators and smartphones. A child computes through a different algorithm (adding four plus four). -Physical Implementation: Actual thing that does it: brain, ears, output (lips, motor response). Software, switches, etc for computing devices Tri-Level Hypothesis’ Criticism: Some computations are easy for neurons and some are really difficult Structural Level of Analysis: more complex (hierarchy) How do we study The Mind?

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