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The Wada test is named after Japanese neurologist and epileptologist Juhn Atsushi Wada, of the University of British Columbia. [5] [6] He developed the test while he was a medical resident in Japan just after [citation needed] World War II, when he was receiving training in neurosurgery.
Studies show there is a correlation between brain lesion and language, speech, and category-specific disorders. Wernicke's aphasia is associated with anomia, unknowingly making up words , and problems with comprehension. The symptoms of Wernicke's aphasia are caused by damage to the posterior section of the superior temporal gyrus. [6] [7]
Aphasia, also known as dysphasia, [a] is an impairment in a person’s ability to comprehend or formulate language because of damage to specific brain regions. [2] The major causes are stroke and head trauma; prevalence is hard to determine, but aphasia due to stroke is estimated to be 0.1–0.4% in developed countries. [3]
The Boston Naming Test (BNT), introduced in 1983 by Edith Kaplan, Harold Goodglass and Sandra Weintraub, is a widely used neuropsychological assessment tool to measure confrontational word retrieval in individuals with aphasia or other language disturbance caused by stroke, Alzheimer's disease, or other dementing disorder. [1]
The Boston Diagnostic Aphasia Examination provides a comprehensive exploration of a range of communicative abilities. Its results are used to classify patient's language profiles into one of the localization based classifications of aphasia: Broca's, Wernicke's, anomic, conduction, transcortical, transcortical motor, transcortical sensory, and global aphasia syndromes, although the test does ...
The test contains a cognitive screening, a language battery and a disability questionnaire. The authors of the comprehensive aphasia test take account of current linguistic and psychological theory and other variable that impact aphasic performance. The CAT was published in 2005 and was the first new aphasia test in English for 20 years.
A patient who truly has an aphasia cannot have been diagnosed with any other medical condition that may affect cognition. [citation needed] Logorrhea is a common symptom of Wernicke's aphasia, along with circumlocution, paraphasias, and neologisms. A patient with aphasia may present all of these symptoms at one time. [citation needed]
Memory is a very broad function which includes several distinct abilities, all of which can be selectively impaired and require individual testing. There is disagreement as to the number of memory systems, depending on the psychological perspective taken.