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PSYB51H3 (306)
Chapter 1

chapter 1

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Matthias Niemeier

PSYB51 Text Notes Chapter One Page 1Adaptation Just noticeable difference JND or difference thresholdA reduction in response caused by prior or continuation stimulationThe smallest detectable difference bw two stimuli or them minimum change in a stimulus that enables it to be correctly judged as difference from a Sensory transducerreference stimuliA receptor that converts physical energy from the environment into neural activityWeber LawThe principle that the JND is a constant fraction of the comparison stimulusNativismThe idea that the mind produces ideas that are not derived from external Fechners Lawsources and that we have abilities that are innate and not learnedA principle describing the relationship bw stimulus and resulting sensation such that the magnitude of subjective sensation increases proportionally to the Dualismlogarithm of the stimulus intensity Later found incorrectThe idea that mind and body both exist sk log Ra stimulus intensity grows larger larger changes are required for changes to Monismbe detected by the perceiverThe idea that mind and matter are formed from or reducible to a singles psychological sensation ultimate substance or principle of being log Rphysical stimulus level kconstantMaterialismThe idea that physical matter is the only reality and everything including the mind can be explained in terms of matter and physical phenomena Materialism is a type f monismMentalismThe idea that the mind is the true reality and objects exist only as aspects of the minds awareness Mentalism is a type of monismMindbody dualismOriginated by Rene Descartes The idea positing the evidence of two distinct principles of being in the universe spiritsoulmatterbodyEmpiricismthe idea that experience from the senses is the only source of knowledgePanpsychism FechnerThe idea that all matter has consciousnessPsychophysics FechnerThe science of defining quantitative relationships bw physicalpsychological subjective eventsTwopoint touch threshold WeberThe minimum distance at which two stimuli eg two simultaneous touches are just perceptible as separatePlato cave allegory metaphor of how what we perceive may not be the entire image of the worldHeraclitus Never step into the same stream twice exactly the same event happens twice it will not be perceived the same way because the perceiver changed following the first eventDemocritus Senses should be trusted bc perception is the result f physical interaction bw the world and our bodies Primary qualitiesdirectly perceived weight texture Secondary qualitiesrequire interaction bw atoms from objects and atoms in perceiver primary and secondary notion of difference bw sensation and perception respectivelyDescartes Cognito ergo sum I think therefore I am Nativist Dualist view of mind Asserts that his thinking mind defines and proves his existenceThomasEmpiricistHobbes All mental activityconsequence of experience Sensory experiences that are old and fadedmemories imagination is nothing but decaying senseJohn Locke Empiricist Newborns mind as a blank slate on which experience writesMolyneuxLocke agreed that those born wo sight wouldnt recognize objects they only touched and when seeing itRestored sight of adults followed by depression Whereas no such effects in the cases w children
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