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NROC64 : Lec 1 : Chemical Senses (nearly word-for-word what was said in lecture)

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NROC64Lec 1Introduction to SensoryMotor SystemsChemical SensesIntroduction to Sensory Motor SystemsOur knowledge nowadays is STILL comparable to what was known in earlier times in Europe about AfricaoMetaphoroEuropeans didnt know much about Africa except for coastlines nothing known about inside ppl who lived in Africa knew much more earlieroSimilar to what we know about the brainwe know some detail but theres a lot of gapsSensory and motor coastlinesoSensory transduction and sensory physiology for each of the sensory sysmodels of sensory processing sometimes using cpuwe have pretty good understanding of the outputs spinal and central mechanisms of motor controloBut still somewhat disconnectedoIn order to understand more about the brain you have to look at it in a diff wayhave to make cxns btn coastlines like sending expeditions across continent of AfricaoTherefore instead of looking at sensory AND motor systemswell look at SENSORIMOTOR systems ALSOabout how this whole thing works togetherSensorimotor integration expeditions into the uncharted brainoOne of the challengesvastof neurons100 billion neuronsoComplexityoEx 60000 oculomotor neuronsoOne output path of 100 billion neuronsoWe need to understand the synapsesoHow many synapses does a neuron have Variable but say 1000 avgoBuilding model on cpu difficulthigh level of detaillot of infooSynapse can have diff strengths lets say you take 256 values to code info for strength of synaptic cxn 8 bits1 byteoThis is the amount of bytes that we need to code for all the synaptic cxns in avg human brainoSUMMARY not impossible to code all this info but you need 100000 cpus w 1 terabyte hard driveoHard to knowunderstand what these networks do by looking at individual cxns only Simple mindsoHaving a simple brainoStudying simple brainsoStudying subsystems of complex brains
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