El Tercihinin Görsel P300 Yanıtları ve Görsel Tarama Yolları Üzerine Etkisi

Year 2012, Volume: 1 Issue: 1, 32 - 40, 01.04.2012

Gökçer Eskikur İlker Yücesir Ümmühan İşoğlu-alkaç

Abstract

Beyin yarıküre asimetrilerinin davranışa da benzer şekilde yansıdığı düşünülmektedir. Bu konuda en belirgin davranışsal asimetri, el tercihidir. Görsel Oddball paradigması ile 19 farklı bölgeden, sol ve sağ elini kullanan 14’er gönüllünün toplam 28 kişi Olaya İlişkin Potansiyel OİP verileri kaydedilmiştir. Ayrıca değişikliği tespit paradigmasında tarama yolu değerlendirilmiştir. Sağ ve sol elini kullananların P300 yanıtlarının genlik ve latans değerlerinin karşılaştırmasında gruplar arası fark bulunmazken; kanal bazında orta hat Fz, Cz, Pz genlik p

Keywords

El tercihi, Olay ilişkili potansiyelleri, P300, EEG

The Effect of Handedness on Visual P300 Responses and Visual Scanning Pathways

Abstract

It is thought that hemispheric asymmetry is reflected to behavioral asymmetries. The most prominent behavioral asymmetry is hand preference. This study consisted of two groups 14 each with different handedness. Event-Related Potentials ERPs to a visual oddball task were recorded from 19 sites, and another session with a “change detection paradigm” was applied, where the visual scanning pathways were recorded. The comparison of P300 grand averages of 19 sites showed no significant difference between the groups. The comparison of the central sites Fz, Cz, Pz showed significant differences of both, amplitude and latency, p

Keywords

Hand preference, Event-related potentials, P300, EEG

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