PSY 654 Lecture Notes - Probability Distribution, Connectionism, Phineas Gage
13 Sep 2014
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Lesion studies: participant a: phineas gage, before railroad worker, hold down job, after profane, unable to plan. Perhaps the damage incurred is responsible for these informal changes we observe. However, data can"t be gathered until after the lesion. Association deficits: participant a, can"t process written words, can"t process spoken works. Perhaps there is some shared underlying damage that is causing both problems. Could be issues with the word processing systems in general rather than manipulating one specific spot or area. Double dissociation deficits: participant a: broca"s aphasia, participant b: wernicke"s aphasia. Perception is seemingly effortless and works nearly all the time. However it is very rare that we merely perceive. Rather, perception is almost always as active process in which our sensory experiences are built of previous history and prediction. Example of the influence of bottom-up processes in perception. Example of the influence of top-down processes in perception.
