Mismatch negativity of ERP in cross-modal attention

• Published in: Science China. Life sciences Vol. 40; no. 6; pp. 604 - 612
• Main Author: 罗跃嘉 魏景汉
• Format: Journal Article
• Language: English
• Published: China Springer Nature B.V 01.12.1997
• Subjects: and; Attention; Cross-modal; delayed; Delayed response; ERPs; event-related; Event-related potentials; Hearing; Latency; mismatch; Mismatch negativity; MMN; negativity; potentials; response; Scalp; selective; Sensorimotor integration; Sensory integration; Visual perception; Visual stimuli
• ISSN: 1674-7305; 1006-9305; 1869-1889; 1862-2798
• DOI: 10.1007/BF02882690

Event-related potentials were measured in 12 healthy youth subjects aged 19-22 using the paradigm "cross-modal and delayed response" which is able to improve unattended purity and to avoid the effect of task target on the deviant components of ERP. The experiment included two conditions: (i) Attend visual modality, ignore auditory modality; (ii) attend auditory modality, ignore visual modality. The stimuli under the two conditions were the same. The difference wave was obtained by subtracting ERPs of the standard stimuli from that of the deviant stim-uli. The present results showed that mismatch negativity (MMN), N2b and P3 components can be produced in the auditory and visual modalities under attention condition. However, only MMN was observed in the two modalities un-der inattention condition. Auditory and visual MMN have some features in common: their largest MMN wave peaks were distributed respectively over their primary sensory projection areas of the scalp under attention condition, but over front