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Yıl:1998; Cilt: 5; Sayı: 1>> Özet
Çocuk ve Gençlik Ruh Sağlığı Dergisi; 1998;5(1):28-33
Ergen ve Erişkin Başlangıçlı Şizofrenide P300 Farklılıkları
E Özatalay, S Özkaynak, B Aktekin, Z Önal, T Kahraman
Akdeniz Üniversitesi, Çocuk Psikiyatrisi Anabilim Dalı, Antalya
Bu çalışma, ergen (21 yaş öncesi) ve erişkin (25 yaş sonrası) başlangıçlı şizofren hastalarda bilgi işleme ve dikkate ilişkin bozuklukların olaya bağlı potansiyellerden P300 ile araştırmayı hedeflemiştir. Çalışmada 11 ergen başlangıçlı olmak üzere 20 erişkin şizofren ve 26 sağlıklı kontrol denek ele alınmıştır. Deneklerde "şaşırtmalı uyaran dizisi" uygulanarak hedef uyaranla P300 yanıtları ortaya çıkarılmıştır. Ergen başlangıçlı hastalarda N200 /P300 genliğinde azalma bulunmuştur. Sonuçlar ergen ve erişkin başlangıçlı şizofreninin nörogelişimsel iki ayrı hastalık olduğu veya bir süreklilik özelliği olan tek bir hastalık olduğuna ilişkin varsayımlar temelinde tartışılmıştır.
P300 Differences in Adolescent and Adult Onset Schizophrenia
In this study, we aimed to investigate information- processing and attentional disturbance in schizophrenic patients with adolescent (below age of 21) and adult-onset (after age of 25) by the help of event-related potentials. Here we used P300 wave as a measurement of cognitive performance with studied 20 schizophrenic (11 adolescents-and 9 adult-onset) and 26 healthy subjects. Audiotory oddball paradigm was used to elicit P300 compotenent in responses to target stimuti. we found that N200/P300 aplitude was attenuated in schiszophrenic patients with adolescent-onset. Results were discussed with reference to hypothesis that adolescent and adult onset schizophrenia represent a distinct neurodevelopmental disease entitiy or lie on a continuum.

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