PSYC3331 Lecture Notes - Lecture 2: Inferior Temporal Gyrus, Cognitive Psychology, Visual Cortex
Damage to Broca's area (Broca's Aphasia)
Articulation
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Naming
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Prosody
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Writing
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Grammar
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Problems with language production
Broca (1861)
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Wernicke's Aphasia
Fluent speech
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Prosody intact
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Paraphasia common
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Writing
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Problems with language production
Speech
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Writing
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Very poor speech comprehension
Wernicke (1874)
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Wernicke
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Lichteim model (1885)
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Neurological models (19
th
Century)
1.
Understanding the neuropsychology of language
Neuropsychology of language
Monday, 18 June 2018 6:44 PM
Skye lecture 1 Page 1
Document Summary
Neurological evidence (based on lesions) provides a model of language function. Brain activation when people attempt cognitive tasks fmri measures deoxyhaemoglobin - an index of energy uptake. Based on subtraction methods, e. g. brain activation when reading aloud. Can see functional activation in areas that are rarely damaged. Not limited to damaged area (can see systems) Not based on assumption that cognitive process limited to specific structural location. Can look at abnormal function even without damage, e. g. disconnection. Cannot limit what people do mentally - maybe doing additional, implicit word processing. Baseline activation may vary with task, e. g. , visual processing of written words may increase when asked to read aloud relative to silently. Can only say area was sufficient to do task, but not necessary Left superior temporal gyrus (wernicke"s area) necessary fmri vs neurological model. Does not activate anterior part of broca"s area (pars triangularis) Does activate l post inferior temporal cortex/mid fusiform gyrus (not mentioned in neurological model)
