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Aphasia(poster)
Aphasia is an impairment in language comprehension and production caused by acquired brain lesions. Different types of aphasia are associated with lesions in specific brain regions. Wernicke's aphasia results from lesions in the temporal lobe including Wernicke's area and is characterized by fluent but meaningless speech. Broca's aphasia is caused by frontal lobe lesions including Broca's area and presents with nonfluent, agrammatical speech. Global aphasia arises from extensive perisylvian lesions and causes impaired comprehension, speech, reading, and writing.
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Aphasia(poster)
- 1. APHASIA Aphasia defined asimpairment in comprehension &/production of spoken or written language due to acquired lesion of brain. ANATOMY OF LANGUAGE AREA: Temporal , infrasylvian including angular & supramarginal gyri (22,39,40) Wernicke”s aphasia Frontal suprasylvian (44,45) Broca”s aphasia Large perisylvian or separate temporal & frontal Global aphasia Supramarginal gyrus (40) ,primary auditory cortex (41,42)or insula Conduction aphasia Surrounding Wernicke”s area (37) Transcortical sensory aphasia Anterior or superior to Broca”s area(watershed zone) Transcortical motor aphasia Calcarine & White matter or callosum (17,18,19) Pure word blindness B/L (or Left) Middle of Superior temporal gyrus (37) Pure word deafness Region of Broca”s area Pure word mutism Deep temporal lobe Anomic aphasia TYPES OF APHASIA: Types Of Aphasia Comprehension Speech Naming Reading Aloud Repetition Of Spoken Words Writing Spoken Words Written Words Dictation Copy Words Wernicke”s aphasia impaired Impaired Fluent, Effortless, Well Articulated Paraphasic , Neologisms, Lack Of menining. (Jargon Speech) Impaired Impaired Impaired Impaired Impaired Broco”s Aphasia Preserved Preserved Nonfluent, Effortful, Agrammtical. (Telegraphic Speech) Impaired Impaired Impaired Impaired Preserved Global Aphasia Impaired Impaired Nonfluent Impaired Impaired Impaired Impaired Impaired Conduction Aphasia Preserved Preserved Fluent, Paraphasic Impaired Impaired Impaired Impaired Impaired Transcortical Sensory Aphasia Impaired Impaired Fluent, Paraphasic Impaired Impaired Preserved (Echolalia) Impaired Impaired Transcortical Motor Aphasia Preserved Preserved Nonfluent Impaired Impaired Preserved Impaired Preserved Pure Word Blindness Preserved Impaired Preserved Preserved Impaired Preserved Impaired Impaired Pure Word Deafness Impaired Preserved Preserved Preserved Preserved Impaired Impaired Preserved Pure Word Mutism Preserved Preserved Mute Preserved Impaired Preserved Preserved Preserved Anomic Aphasia Isolated Word Finding Difficulty Isolated Word Finding Difficulty Fluent, Prominent Perseveration Impaired Preserved Preserved Preserved Preserved ADAM”S AND VICTOR”S NEUROLOGY (EIGHTH EDITION) DAMASIO AR : Aphasia .N Engl J Med 326:531, 1992 DR.BHUVANESHWARI.R FRONTAL LOBE OCCIPITAL LOBE PARITAL LOBE SYLVIAN ROLANDIC FISSURE 22- Wernicke”s area 44 ,45- Frontal suprasylvian Broca”s area 39-Angular gyri 40-supramarginal gyrus 37-Middle temporal gyrus 6-Supplementary motor area 17-primary visual area 18,19 –visual association area 41,42 - primary auditory cortex