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29 Cards in this Set
- Front
- Back
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Lichteim's model
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a triangle that shows lesion sites
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verbal paraphasia
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when the person substitues a real word
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literal paraphasia
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phonological similarity 50% of the phonemes in the word need to be there
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neologistic paraphasia
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a non-word paraphasia
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transcortical sensory
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- boarder zone
- wernickes and broca’s spared - sometimes the watershed between mca and pca - language characteristics are wernicke like in production and comp. - repetition is NOT impaired |
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conduction aphasia
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- perisylvian
- inferior division of the MCA - the lesion may impair the arc faciculus and the supramargional gyrus. - What is the relationship between between supramarginal gyrus. o The arc faciculus is under the supramarginal gyrus. - Also it extends to the auditory association cortex. - There is supposedly a sparing of wernickes - No hemiparisis |
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anomic aphasia
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- fluent aphasia
- almost all aphasic patients have naming problem, but they don’t have anomic aphasia - they have fluent output - the lesion is nonlocalizing . - it is a pure naming deficit. - Their speech is fluent - Fluent output but they have somewhat empty - They have no grammatical difficulty. - It primarily affects nouns - Verbs are less impaired - Functional categories spared |
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fluent aphasias
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- wernickes
- transcortical sensory aphasia - conduction aphasia - anomic aphasia |
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broca's have this type of thing where they repeat the word over and over again
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- Perseveration – using the same word over and over again.
o They get locked into a particular network and have a hard time inhibiting that particular word |
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pure word deafness
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spontaneous speech unimpaired. speech comprehention very impaired. cannot repeat words and nonwords. locus of deficit - auditory analysis system
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word meaning deafness
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good spontaneous speech. writing unimpaired, very poor comprehention but good hearing. repitition unipaired. locus of deficit - connection between auditory input lexicon to the semantic system
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cohort model
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el ele elephant . activation begins with the first segment.
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logogen model
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they are word detectors. turned on by phoneme combinations. perfect match is not needed. words are activated when threshold is reached. faster access to frequently used words
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connectionist model
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network model with layers and units that have varying connection strengths.
visual feature units letter units word units semantic units |
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sensory-functional model
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animals plant life and artifact.
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typicality effect
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typical exemplars are faster and more accurate than atypical
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there is _________ input and output for the semantic system
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multimodal
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semantic priming
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when a word is introduced early in the lexical decision and reaction time test, the reaction time on the word when it is repeated is shorter
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cross modal lexical priming
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sentences are presented aurally at normal speaking rate, and at some point during each sentence, a letter sequence ( a word or nonword) is visually displayed on a screen. the particiapnt is asked to attend to teh aurally presented sentence and also to make a lexical decision about the letter sequence via
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factors affecting lexical access
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-frequency and familiarity
- semantic cateory - typicality - context - grammatical word class - age of acquisition - concreteness |
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deep dysphasia
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spontaneous speech is impaired. semantic paraphasias. inflection errors, repitition impaired, semantic paraphasias, open class easier than closed class, cannot repeat nonwords. reading aloud spared. locus of deficit - connection between auditory analysis and phoneme level , semantic system
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memory store for the spoken form of the words
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phonological output lexicon
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involved in phoneme specification
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phoneme level
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model:
conceptual level lemma level lexeme level |
Discrete two stage
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model:
conceptual level lexical semantic lexical phonological - feed forward as well as backwards |
interactive activation
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SIA
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semantic interference affect
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PFA
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phonological facilitation effect
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apperceptive agnosia
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- spontaneous speech good
- cannot match words to pictures - copying impaired - drawing from memory spared locus of deficit - object analysis system |
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associative agnosia
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- spontaneous speech spared
- auditory comp good - naming impaired with visual objects - copying spared - drawing from memory impaired - locus of deficit - object recognition units |
