Physiologial Psychology Exam 5 chapter 14

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Lateralization of function
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Commissurotomyoperation that involves cutting the commissures.Left hemispherecontrols the right side of the body; analytical, language, mathRight hemispherecontrols the left side of the body; creative, intuitive, spacialhelping-hand phenomenonpresented with two different visual stimuli, the hand that "knows" may correct the othervisual completionthe completion of filling in of a scotoma (an area with partial or complete loss of vision in the visual field) by the brain - usually in split brain patientschimeric figures testinvolves the presentation of chimeric faces, which are vertically split composites of what is usually the same person's face displaying a different expression on each half.split brain syndromeA condition in which an individual's corpus callosum is severed such that the two hemispheres of the brain cannot communicate with each other.Left vs. right brain: are there differences?•There are no absolutes in life and lateralization is just another example of that fact. •It is a matter of statistics rather than all-or-none differencesDichotic listening testa test of language lateralization in which two different sequences of three spoken digits are presented simultaneously, one to each ear, and the subject is asked to report all of the digits heardWhen it comes to Ipsilateral movements...left brain is superiorWhat did Levy (1969) discover about the right brain?The right has superior spatial abilityEmotional stimuli is prominent in...The right brain. (ex: facial expressions)What did Kimura (1964) discover?That the right hemisphere processes music better. During this test, a dichotic melody recognition task was employed to determine cerebral lateralization of melodic stimuli among musicians and nonmusicians. Subjects who performed well on the melody recognition task were more likely to show a right ear (left hemisphere) superiority than those who performed poorly.Memory is more prominent in...right hemisphereThe left brain is the...interpreter (explains the meaning of things).Frontal operculumCenter for expression of language.Broca's areaControls language expression - an area of the frontal lobe, usually in the left hemisphere, that directs the muscle movements involved in speech.Planum temporaleinvolved in auditory processing and receptive languageWernicke's areacontrols language reception - a brain area involved in language comprehension and expression; usually in the left temporal lobeheschel's gyruscontains primary auditory cortexWernicke-Gerschwind modelcircuit for comprehending speech and generating a verbal response3 premises to the cognitive neuroscience approach1. There are several essential cognitive processes (phonological analysis, grammatical analysis, and sematic analysis) 2. Brain areas involved in language are not exclusively for language 3. Since it is part of brain areas with multiple functions, the language areas must be small.Phonological analysisanalysis of the sound of languageGrammatical analysisanalysis of the structure of languageSemantic analysisanalysis of the meaning of languageReading: Bavelier (1997)•Brain activity was patchy •Differences between participants and within participants •More widespread than WG model predictedDamasio's PET study of Naming (1996)•Category specific encoding of words •Animals, tools, famous faces