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At least 19 recordsLinked to original sources
PubMed2001

Differences between conduction aphasia and Wernicke's aphasia.

Conduction aphasia and Wernike's aphasia have been differentiated by the degree of auditory language comprehension. We quantitatively compared the speech sound errors of two conduction aphasia patients and three Wernicke's aphasia patients on various language modality tests. All of the patients were Japanese. The two conduction aphasia patients had "conduites d'approche" errors and phonological paraphasia. The patient with mild Wernicke's aphasia made various errors. In the patient with severe Wernicke's aphasia, neologism was observed. Phonological paraphasia in the two conduction aphasia patients seemed to occur when the examinee searched for the target word. They made more errors in vowels than in consonants of target words on the naming and repetition tests. They seemed to search the target word by the correct consonant phoneme and incorrect vocalic phoneme in the table of the Japanese alphabet. The Wernicke's aphasia patients who had severe impairment of auditory comprehension, made more errors in consonants than in vowels of target words. In conclusion, utterance of conduction aphasia and that of Wernicke's aphasia are qualitatively distinct.

Aged↗
PubMed1984

Crossed Wernicke's aphasia.

Severe Wernicke's aphasia occurred suddenly in a right-handed man and persisted with little improvement until he died 54 days later. Postmortem examination showed an infarct in the posterior temporoparietal region of the right hemisphere. This case demonstrates two new features of crossed dextral aphasia. First, language skills may be fully lateralized to the right hemisphere in right-handed patients. Second, when crossed lateralization occurs, the usual localization of aphasic syndromes is common, suggesting that the intrahemispheric organization mediating language activities is the same in the right hemisphere of the crossed dextral and the left hemisphere of the typical right-handed individual.

Aged↗
PubMed1983

Fundamental frequency, language processing, and linguistic structure in Wernicke's aphasia.

Five Wernicke's aphasics and five normal control subjects were tested in order to assess several aspects of fundamental frequency (F0) in speech production. The clinical impression of normal prosody in Wernicke's aphasia is correct inasmuch as these patients generally exhibited F0 declination. However, F0 declination ranged over shorter domains than in normal speech. Moreover, the increased use of F0 continuation rises by the Wernicke's aphasics indicated their inability to maintain a single F0 contour over constituents which are normally integral. The hypermelodic quality of F0 in the speech of Wernicke's aphasics further supported the notion that speech prosody was not strictly normal. F0 attributes tended to be normal when they corresponded to the global linguistic variable of sentence length, while they were abnormal when they corresponded to the processing of syntactic structure. No evidence was found that paraphasias and neologisms directly affected the programming of F0. The results are discussed in terms of speech processing abilities and limitations in Wernicke's aphasia.

Aphasia↗
PubMed1997

Speed of lexical activation in nonfluent Broca's aphasia and fluent Wernicke's aphasia.

Rapid, automatic access to lexical/semantic knowledge is critical in supporting the tight temporal constraints of on-line sentence comprehension. Based on findings of "abnormal" lexical priming in nonfluent aphasics, the question of disrupted automatic lexical activation has been the focus of many recent efforts to understand their impaired sentence comprehension capabilities. The picture that emerges from this literature is, however, unclear. Nonfluent Broca's aphasic patients show inconsistent, not absent, lexical priming, and there is little consensus about the conditions under which they do and do not prime. The most parsimonious explanation for the variable findings from priming studies to date is that the primary disturbance in Broca's lexical activation has something to do with speed of activation. Broca's aphasic patients prime when sufficient time is allowed for activation to spread among associates. To examine this "slowed activation" hypothesis, the time course of lexical activation was examined using a list priming paradigm. Temporal delays between successive words ranged from 300 to 2100 msec. One nonfluent Broca's aphasic patient and one fluent Wernicke's patient were tested. Both patients displayed abnormal priming patterns, though of different sorts. In contrast to elderly subjects, who prime at relatively short interstimulus intervals (ISIs) beginning at 500 msec, the Broca's aphasic subject showed reliable automatic priming but only at a long ISI of 1500 msec. That is, this subject retained the ability to access lexical information automatically if allowed sufficient time to do so, a finding that may help explain disrupted comprehension of normally rapid conversational speech. The Wernicke's aphasic subject, in contrast, showed normally rapid initial activation but continued to show priming over an abnormally long range of delays, from 300 msec through 1100 msec. This protracted priming suggests failure to dampen activation and might explain the semantic confusion exhibited by fluent Wernicke's patients.

Aphasia, Broca↗
PubMed2006

Situational therapy for Wernicke's aphasia.

Patients with Wernicke's or expressive aphasia are able to produce fluent speech, however, this speech may be complete gibberish sounds and totally incomprehensible, or even when comprehensible to a degree is often laced with severe errors and abnormalities such as verbal and phonemic paraphasias and neologisms. Furthermore, patient's with Wernicke's aphasia have poor to no understanding of speech or language. There is no proven method for rehabilitation of Wernicke's aphasia, or even much guidance for physicians or speech therapists to treat Wernicke's aphasia patients. In contrast to their poor to non-existent communication skills using speech or other forms of language, it has long been appreciated informally and formally that Wernicke's aphasia patients are able to communicate well, even normally, using non-verbal means such as actions, movements, props, gestures, facials expressions, and affect. Furthermore, in non-language domains Wernicke's aphasia patients can show normal memory and learning abilities. Thus, we here suggest that the non-language communication channels of Wernicke's aphasia patients be channeled and utilized in their functional rehabilitation: Specifically, we suggest that therapy for Wernicke's aphasia patients should consist of placing patients in real or simulated important functional situations--e.g., buying food, taking transport--and let the patients train and learn to use and hone their non-language communication means and skills for improved practical functioning.

Aphasia, Wernicke↗
PubMed2004

Crossed Wernicke's aphasia: a case report.

Crossed aphasia is a phenomenon in which an individual sustains a lesion in the right hemisphere (typically non-language dominant), but who exhibits an aphasic syndrome. The authors present a case study of an individual with crossed aphasia (CA) in an attempt to provide anecdotal information for four questions posed by : (a). Is CA a reversal of the normal cerebral hemisphere pattern of language function? (b). Does the presence of aphasia following a right cerebral hemisphere lesion indicate that typical right hemisphere functions (e.g., visual perception) are intact? (c). How may the aphasia's presentation differ from typical left hemisphere aphasias? And (d). is the pattern of improvement following CA similar to that of typical left hemisphere aphasias? We longitudinally examined the communicative-cognitive performance of an adult man with crossed aphasia of the Wernicke's type following a cerebrovascular accident. A 21-week follow-up evaluation indicated improvements in his language functioning from our initial evaluation, but he continued to exhibit a classic, moderately severe Wernicke's aphasia.

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PubMed1989

Etiology of stroke in patients with Wernicke's aphasia.

We reviewed 49 patients with Wernicke's aphasia resulting from a stroke. Their aphasia was classified on the basis of comprehensive neuropsychological testing. Wernicke's aphasia was more common in older patients and in men. Cerebral infarction occurred in 38 patients (78%) and intracerebral hemorrhage in seven (14%); the remaining four patients (8%) developed aphasia after surgery for aneurysmal subarachnoid hemorrhage. Embolic events were the most common etiology of Wernicke's aphasia in the 38 patients with cerebral infarction, with cardiac emboli in 40% and large-vessel atheroemboli from a carotid source in 16%. In patients with Wernicke's aphasia secondary to infarction, an embolic source should be sought. Patients with Wernicke's aphasia should have computed tomography to exclude intracerebral hemorrhage before institution of anticoagulant therapy.

Adult↗
PubMed1986

Infarcts of the inferior division of the right middle cerebral artery: mirror image of Wernicke's aphasia.

We searched the Stroke Data Bank and personal files to find patients with CT-documented infarcts in the territory of the inferior division of the right middle cerebral artery. The most common findings among the 10 patients were left hemianopia, left visual neglect, and constructional apraxia (4 of 5 tested). Five patients had an agitated confusional state that was characterized by hyperactivity, restlessness, and easy distractibility. Motor and sensory abnormalities were not severe or persistent. The most common cause was cardiogenic embolism.

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PubMed2000

The experience of Wernicke's aphasia.

The authors induced a transient Wernicke's aphasia in a patient with left frontal arteriovenous malformation by superselective Wada injection exclusively into the lower division of the left middle cerebral artery. The patient was then asked to recall his experience, which the authors matched against his language during anesthesia. The patient's account showed that there was a more systematic attempt to respond appropriately than the authors could infer from his overt behavior. His narrative suggests that a thought process not measured by aphasia examinations may exist independent of language.

Aphasia, Wernicke↗