The most prominent feature of Wernicke's aphasia is that the patient's comprehension is severely impaired. When there is a lesion in Wernicke's area, images and words coming to the visual, auditory and somatosensory cortices cannot stimulate this area, and therefore cannot activate the language system; The patient cannot process this information in the context of language, so he cannot understand the speech he hears, cannot read the text he sees, or cannot say the name of the object he touches. In individuals with Wernicke's aphasia, reading is more severely impaired than the patient's writing.
The patient's naming and repetition skills are both impaired. The patient cannot find the correct name for the object he sees and has difficulty finding words. It was known that the reason for the repetition disorder was the patient's difficulty in understanding, that the patient could not understand the meaning of the word he heard, and that he could not repeat it because he could not analyze it in terms of sound. The information we have obtained from studies conducted with patients with PPA shows that Wernicke's area is a critical region for the "repetition" function, and that repetition is impaired if this part of the cortex is damaged.
Wernicke's area is the junction where all meaningful associations that will be converted into sound patterns pass. For this reason, when this area is damaged, the patient's performance based on both past and present auditory understanding is impaired. Therefore, the patient cannot process his own words correctly, and therefore his speech comes out in an absurd and nonsensical manner. The patient's speech is "fluent"; The number of words he says per minute is normal or even higher than normal, his pronunciation and articulation of syllables are fluent. Uses more words than usual in a sentence. Sometimes it is difficult to silence the patient; he talks non-stop. This conversation sounds like a normal conversation when listened to from a distance. However, when the patient is approached, it becomes clear that this is a meaningless conversation.
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