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Patients with Wernicke's aphasia demonstrate fluent speech, which is characterized by typical speech rate, intact syntactic abilities and effortless speech output. [3] Writing often reflects speech in that it tends to lack content or meaning. In most cases, motor deficits (i.e. hemiparesis) do not occur in individuals with Wernicke's aphasia. [4]
Another symptom of Wernicke's aphasia is use of semantic paraphasias or "empty speech" which is the use of generic terms like "stuff" or "things" to stand in for the specific words that the patient cannot think of. Some Wernicke's aphasia patients also talk around missing words, which is called "circumlocution". Patients with Wernicke's aphasia ...
Paraphasia is associated with fluent aphasias, characterized by "fluent spontaneous speech, long grammatically shaped sentences and preserved prosody abilities." [4] Examples of these fluent aphasias include receptive or Wernicke's aphasia, anomic aphasia, conduction aphasia, and transcortical sensory aphasia, among others.
Receptive aphasia (also known as "sensory aphasia" or "Wernicke's aphasia"), which is characterized by fluent speech, but marked difficulties understanding words and sentences. Although fluent, the speech may lack in key substantive words (nouns, verbs, adjectives), and may contain incorrect words or even nonsense words.
The classical explanation for conduction aphasia is a disconnection between the brain areas responsible for speech comprehension (Wernicke's area) and that of speech production (Broca's area). This is due to specific damage to the arcuate fasciculus, a deep white matter tract. Aphasic people are still able to comprehend speech as the lesion ...
Receptive aphasia is associated with the posterior third of the superior temporal gyrus in the distribution of the inferior division of the middle cerebral artery, [3] known as "Wernicke's area", an area adjacent to the cortex responsible for auditory processing. If the damage extends posteriorly, visual connections are disrupted, and the ...
[3] [7] Expressive aphasia differs from dysarthria, which is typified by a patient's inability to properly move the muscles of the tongue and mouth to produce speech. Expressive aphasia also differs from apraxia of speech, which is a motor disorder characterized by an inability to create and sequence motor plans for conscious speech. [8]
Instead, it requires speech production damage, where the desired phonemes are selected erroneously or in an incorrect sequence. [7] Therefore, although Wernicke's aphasia, a combination of phonological retrieval and semantic systems impairment, affects speech comprehension, it also involves speech production damage. [7]