Lexical-Semantic and Phonological Processing Deficits in Wernicke’s Aphasia

This study investigates the lexical-semantic and phonological processing deficits in Wernicke’s aphasia by comparing with healthy controls aiming to shed light on the causes of impairment. Identifying and PictureNaming, Lexical-Semantic Association and Rhyme Recognition Tests were used to assess the processing. The results showed that Wernicke’s aphasics have the inability to retrieve a name associated with a picture but they were able to match the semantic prime with the associated target image similar to the control group. The results revealed that Wernicke’s aphasics are capable of dealing with lexical-semantic processing and semantic judgment. Rhyme Recognition Test results revealed that Wernicke aphasics have partially preserved comprehension of printed language. The results of this study also showed that Wernicke’s aphasics performed significantly lower accuracy than controls on the phonological test and performed comparably on the semantic test. It is concluded that their deficits are likely to be related to access to the phonological representations of words.

Wernike Afazisinde Sözcüksel-anlambilimsel ve Sesbilimsel İşlemleme Bozuklukları

Bu çalışma, Wernike afazili bireyleri sağlıklı bireylerle karşılaştırarak sözcüksel-anlambilimsel ve sesbilimsel işlemleme bozukluklarını incelemeyi amaçlamaktadır. İşlemleme bozukluğunun nedenlerini araştırmak için Tanımlama ve Resim Adlandırma Testi, Sözcüksel-anlambilimsel İlişkilendirme Testi, Uyak Tanıma Testi değerlendirmede kullanılmıştır. Çalışmanın sonuçları Wernike afazili bireylerin resimde bulunan bir kelimeyi hatırlamada ve telaffuz etmekte başarısız oldukları halde önceden anlamsal bağ kurmaları için gösterilen resimle anlamsal ilişkide olan hedef resmi seçmekte başarılı olduklarını göstermiştir. Çalışmanın sonuçları Wernike afazili bireylerin sözcüksel-anlambilimsel işlemlemede başarılı olduklarını göstermiştir. Uyak Tanıma Testi sonuçları ise Wernike afazili bireylerin yazılı dili tanıma yeteneklerinin kısmen korunduğunu göstermiştir. Çalışmanın bulguları ayrıca Wernike afazili bireylerin sesbilimsel testte anlamlı düzeyde düşük sonuçlar gösterdiğini buna rağmen sözcüksel-anlambilimsel testte kontrol grubuna benzer sonuçlar gösterdiğini vurgulamaktadır. Wernike afazili bireylerin işlemleme bozukluğunun nedeninin kelimenin sesbilimsel temsiline ulaşmayla ilişkili bir sorun olabileceği düşünülmektedir.

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