Introduction to Cognitive Psychology - Department of Psychological ...

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Greg Francis 1/2/13However,...Searle has set up a deceptively simple scenario the Chinese room may be an impossibilityYou can imagine a situation where one has a bookwith rules to answer questions in Chinese but only if you do not think too hard in reality, there may be no such book! if the questions can be on almost any topic, thenunderstanding is required for that type of complexprocessingAnd understanding is generally restricted toconsciousness Or maybe one needs to conclude that such an advancedbook has potential consciousnessPurdue UniversityAnd moreover...At a smaller level of computation, it is hard to seehow consciousness could not be (theoretically)possible in computersEach cell in your head is data in - data out suppose cells were gradually replaced by tinycomputers that kept all processing the same» Neuromorphic chips would you claim that at some point you are no longerconscious?There is nothing fundamental about organicconsciousnessPurdue University2. QualiaSome researchers object to the very idea thatcomputers could become conscious They argue that some things in consciousness are notjust computation e.g., consider the color red There seems to be a particularly subjective experienceof seeing something red2. QualiaConsider two people who see the world incolor oppositesQualia for person 1A red apple with agreen leafQualia for person 2A red apple with agreen leafPurdue UniversityPurdue University2. QualiaClearly, theres a big difference in theperceptual experience of these people,but their behavior is essentially the same And there seems no way to distinguish oneexperience from the other Its the unmeasureable experience that is aqualia2. QualiaQualia proponents argue, for example, you can learn all there is to know about light waves,photoreceptors, neural transduction and coding ofcolor,… But suppose you never see any red objects Your knowledge will not tell you what you willexperience when you first see the red of an apple Indeed, you could be tricked into believing a greenapple was red (if you had never seen green either)Purdue UniversityPurdue UniversityPSY200 Cognitive Psychology 4
Greg Francis 1/2/132. QualiaConclusionsBut this is a defeatist argument, or a pointless oneConsciousness if I knew everything about light, photoreceptors, andneural representation of colors, then I would be able toknow what I will experience when I see red it is difficult (maybe impossible for any single human) toknow (or even imagine knowing) all that information in anacademic sense but that doesnt mean that such information does notexistIts partly an empirical question But no one can do the experimentdistributed processing in the brain no site of consciousness no time of consciousnessChinese roomQualiaArtificial IntelligenceDaniel Dennet Consciousness ExplainedPurdue University(1991)Purdue UniversityNext time Review for exam 3 After Exam 3 Start a discussion of language Language as an instinct pidgins and creolesWhy we do not have to worry about teachinglanguage in school.Purdue UniversityPSY200 Cognitive Psychology 5
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