Abstract
The brain is capable of elaborating and executing different stages of information processing. However, exactly how these stages are processed in the brain remains largely unknown. This study aimed to analyze the possible correlation between early and late stages of information processing by assessing the latency to, and amplitude of, early and late event-related potential (ERP) components, including P200, N200, premotor potential (PMP) and P300, in healthy participants in the context of a visual oddball paradigm. We found a moderate positive correlation among the latency of P200 (electrode O2), N200 (electrode O2), PMP (electrode C3), P300 (electrode PZ) and the reaction time (RT). In addition, moderate negative correlation between the amplitude of P200 and the latencies of N200 (electrode O2), PMP (electrode C3), P300 (electrode PZ) was found. Therefore, we propose that if the secondary processing of visual input (P200 latency) occurs faster, the following will also happen sooner: discrimination and classification process of this input (N200 latency), motor response processing (PMP latency), reorganization of attention and working memory update (P300 latency), and RT. N200, PMP, and P300 latencies are also anticipated when higher activation level of occipital areas involved in the secondary processing of visual input rise (P200 amplitude).
Highlights
IntroductionRecent studies highlighted the importance of central organization of neural processes involved in what has been called the different stages of information processing.[1,2,3,4,5,6,7,8,9,10,11] The brain is capable of processing and executing these different stages in a seemingly simple and efficient manner, i.e. the brain detects, identifies and discriminates different stimuli, and subsequently selects and activates appropriate responses in a matter of hundreds of a millisecond.[1,2] exactly how these information-processing stages are processed in the brain remains largely unknown
Statistical analysis revealed that the latency of the P200 component, showed a significant moderate positive correlation with the latency of N200 observed in electrode O2 (Figure 3A); with the latency of PMP observed in electrode C3 (Figure 3B); with the latency of the P300
The results demonstrate moderate positive correlations among the latency of P200, N200, PMP
Summary
Recent studies highlighted the importance of central organization of neural processes involved in what has been called the different stages of information processing.[1,2,3,4,5,6,7,8,9,10,11] The brain is capable of processing and executing these different stages in a seemingly simple and efficient manner, i.e. the brain detects, identifies and discriminates different stimuli, and subsequently selects and activates appropriate responses in a matter of hundreds of a millisecond.[1,2] exactly how these information-processing stages are processed in the brain remains largely unknown. The brain is capable of elaborating and eral afferent and efferent pathways in the by assessing the latency and amplitude of early executing different stages of information pro- central nervous system have parallel path- and late ERP components, including P200, cessing. Exactly how these stages ways, and their distributed parallel processes N200, PMP and P300, in the context of a visual are processed in the brain remains largely might clarify certain features of human oddball paradigm. The acquisition and processing visual stimulus was presented on the monitor The International 10/20 System for elecby the ERP acquisition software, developed in trodes was used with a 20-channel EEG system
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