title: The magnitude of the central visual field could be detected by active middle-late processing of ERPs.
abstract: This study investigated the changes in event-related potential (ERP) waveforms under different central visual field conditions using a three-stimulus oddball paradigm. Circular checkerboards were presented in the center of a computer screen with a visual angle of 5°, 10°, 20°, or 30°, which were regarded as target stimuli. The ERP waveforms were analyzed separately for different stimulus conditions. Participants responded more slowly and had lower accuracy for the 30° visual field level than the other three visual field levels. The ERP results revealed that the amplitudes of target P2 gradually increased from the 5° to 20° visual field conditions, while they decreased abruptly in the 30° visual field condition. Regional effects showed that the amplitudes of target P2 were larger from the occipital electrodes than that from the temporal sites. Besides the negative-going deflection of target N2 and visual mismatch negativity (vMMN) components having an increasing tendency with expansion of the visual field, there was also a trend that the amplitudes of target P3 were decreased and the peak latencies were prolonged with increasing visual field ranges. In addition, the latencies of the difference P3 had a similar trend to the latencies of the target P3, and all the differences were more obvious at the 30° visual field level. The study demonstrated that middle-late components of ERPs can reflect changes in the visual field to some extent.
authors.affiliation: Department of Forensic Science, Soochow University, 215021 Suzhou, China.
authors.forename: Maojuan
authors.initials: M
authors.lastname: Li
authors.affiliation: Yancheng Medical Association, 224002 Yancheng, China.
authors.forename: Xiaoqin
authors.initials: X
authors.lastname: Liu
authors.affiliation: Department of Forensic Medicine, Wannan Medical College, 241002 Wuhu, China.
authors.forename: Qianqian
authors.initials: Q
authors.lastname: Li
authors.affiliation: Department of Forensic Science, Soochow University, 215021 Suzhou, China.
authors.forename: Mengmeng
authors.initials: M
authors.lastname: Ji
authors.affiliation: Department of Forensic Science, Soochow University, 215021 Suzhou, China.
authors.forename: Wenwen
authors.initials: W
authors.lastname: Huang
authors.affiliation: Department of Forensic Science, Soochow University, 215021 Suzhou, China.
authors.forename: Mingyang
authors.initials: M
authors.lastname: Zhang
authors.affiliation: Department of Forensic Science, Soochow University, 215021 Suzhou, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Wang
authors.affiliation: Department of Forensic Science, Soochow University, 215021 Suzhou, China.
authors.forename: Chengliang
authors.initials: C
authors.lastname: Luo
authors.affiliation: Department of Forensic Science, Soochow University, 215021 Suzhou, China.
authors.forename: Zufeng
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Department of Forensic Science, Soochow University, 215021 Suzhou, China. Electronic address: xipingchen@suda.edu.cn.
authors.forename: Xiping
authors.initials: X
authors.lastname: Chen
authors.affiliation: Department of Forensic Science, Soochow University, 215021 Suzhou, China.
authors.forename: Luyang
authors.initials: L
authors.lastname: Tao
mesh_terms: D000328:Adult; D001288:Attention; D001921:Brain; D004569:Electroencephalography / Q000379:methods; D005071:Evoked Potentials / Q000502:physiology*; D005072:Evoked Potentials, Auditory; D005260:Female; D006801:Humans; D008297:Male; D010775:Photic Stimulation / Q000379:methods; D011930:Reaction Time; D058609:Visual Field Tests / Q000379:methods*; D014794:Visual Fields / Q000502:physiology*; D014796:Visual Perception
keywords: Event-related potentials; N2; P2; P3; Visual field; Visual mismatch negative (vMMN)