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Visual mismatch negativity elicited by magnocellular system activation
Kremlácek J, Kuba M, Kubová Z, Langrová J
Jazyk angličtina Země Velká Británie
- MeSH
- dospělí MeSH
- elektroencefalografie MeSH
- evokované potenciály MeSH
- financování organizované MeSH
- lidé středního věku MeSH
- lidé MeSH
- pozornost fyziologie MeSH
- světelná stimulace metody MeSH
- vnímání pohybu fyziologie MeSH
- zraková pole genetika MeSH
- zrakové dráhy fyziologie MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
The processing of visual motion was tested by means of event related potentials recording (ERP) using a paradigm designed to produce a visual mismatch negativity effect. The stimuli were unattended and presented in the peripheral visual field (outside the central 15 degrees). The standard stimulus consisted of an up/down motion sequence, whilst the deviant stimulus of a down/up motion sequence. Significant ERP differences between the standard and deviant conditions were found in 8 out of 10 adult subjects already in 80 ms and prevailingly in interval 145-260 ms from the initial stimulus presentation. The results demonstrate that the magnocellular information undergoes processing capable of detecting differences in the sequence of unattended peripheral motion stimuli.
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- $a Visual mismatch negativity elicited by magnocellular system activation / $c Kremlácek J, Kuba M, Kubová Z, Langrová J
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- $a Department of Pathological Physiology, Charles University in Prague, Faculty of Medicine in Hradec Králové, Czech Republic. jan.kremlacek@lfhk.cuni.cz
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- $a The processing of visual motion was tested by means of event related potentials recording (ERP) using a paradigm designed to produce a visual mismatch negativity effect. The stimuli were unattended and presented in the peripheral visual field (outside the central 15 degrees). The standard stimulus consisted of an up/down motion sequence, whilst the deviant stimulus of a down/up motion sequence. Significant ERP differences between the standard and deviant conditions were found in 8 out of 10 adult subjects already in 80 ms and prevailingly in interval 145-260 ms from the initial stimulus presentation. The results demonstrate that the magnocellular information undergoes processing capable of detecting differences in the sequence of unattended peripheral motion stimuli.
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