Officers College of PAP, Chengdu, China; School of Aerospace Medicine, Air Force Medical University, Xi'an, China.
School of Aerospace Medicine, Air Force Medical University, Xi'an, China.
Neurosci Lett. 2023 May 14;805:137225. doi: 10.1016/j.neulet.2023.137225. Epub 2023 Apr 3.
The aim of the study is to explore differences in cognitive processing of phylogenetic and ontogenetic stimulus using the electroencephalography (EEG) technology. The researcher chose snakes and guns as representatives of phylogenetic stimulus and ontogenetic stimulus, respectively, and used the Oddball paradigm to present the experimental stimuli and explore the cognitive processing differences between them through time-domain analysis and time-frequency analysis. The results of time-domain analysis showed that snakes elicited larger N1, P2, and P3 amplitudes and a shorter P3 latency than guns and neutral stimuli, and that guns elicited greater P2 and P3 amplitudes than neutral stimuli. The findings of time-frequency analysis showed that the beta-band (320-420 ms, 25-35 Hz) power elicited by snakes was significantly greater than by guns and neutral stimuli, and that the beta-band power elicited by guns was significantly greater than by neutral stimuli. The results indicated that the brain has a cognitive processing advantage for both snakes and guns, which is more obvious for snakes than for guns, and that the brain is more sensitive to snakes.
本研究旨在利用脑电图（EEG）技术探索对种系发生刺激和个体发生刺激的认知加工差异。研究人员选择蛇和枪分别作为种系发生刺激和个体发生刺激的代表，并使用Oddball 范式呈现实验刺激，通过时域分析和时频分析来探索它们之间的认知加工差异。时域分析的结果表明，蛇诱发的 N1、P2 和 P3 振幅更大，P3 潜伏期更短，而枪诱发的 P2 和 P3 振幅大于中性刺激。时频分析的结果表明，蛇诱发的β频带（320-420ms，25-35Hz）功率明显大于枪和中性刺激，而枪诱发的β频带功率明显大于中性刺激。结果表明，大脑对蛇和枪都有认知加工优势，对蛇的优势更为明显，而且大脑对蛇更为敏感。
