Sağlıklı Bireylerde Farklı Bilişsel Ek Görevlerin Postural Stabiliteye Etkisinin Araştırılması

Studying dual task provides an important information basic questions about the functional architecture of the brain and whether human cognitive architecture includes a central processor. The aim of this study was evaluate the effects of concurrently different cognitive tasks on postural stability in healthy subjects. Sensory Organization Test using the Computerized Dynamic Posturography and digit span test was performed on 20 healthy subjects, aged 18-32. Cognitive tasks; auditory, visually and auditory-visually presented in the form of easy and difficult forward task and the auditory and visually presented in the form of backward tasks was applied simultaneously with the DOT. DOT scores and cognitive error scores were recorded during rehearsal. Concurrent cognitive tasks DOT scores compared with the basic DOT scores significant reduction were obtained in Conditions (C)1 and C2 (p.05). In other cognitive tasks, DOT scores were obtained significant decrease on C3 and C4 (p.05). During the visual and auditory-visual dual tasks, increase the difficulty of the task, caused a significant increase in the number of errors (p.05). Visual and auditory-visual difficult task compared with the difficult auditory task was found significantly increased of error scores (p.05). Diğer bilişsel görevlerde D3 ve D4'te DOT skorlarında anlamlı azalma saptanmıştır (p.05). Çift görev sırasında görsel ve işitsel-görsel görevlerde zorluk artışı, bireyin hata sayısında anlamlı artışa neden olmuş (p.05). Görsel ve işitsel-görsel zor görevlerde işitsel zor görev ile karşılaştırıldığında hata sayısında anlamlı artış saptanmıştır (p<.05). Oluşturulan çift görev modelinin, geriatrik ve vestibüler bozukluğu olan bireylerde çift görev performansının değerlendirilmesinde kullanılabileceği düşünülmektedir