Semantic processing is a high level cognition function of the human brain. It has been argued intensively whether this process could be accomplished in the absence of awareness. Continuous flash suppression (CFS) is a...Semantic processing is a high level cognition function of the human brain. It has been argued intensively whether this process could be accomplished in the absence of awareness. Continuous flash suppression (CFS) is a powerful approach to create stable unconscious state. In this study, subjects were required to observe a series of paired Chinese words and judge the correlation between them in CFS paradigm. A negative component of event related potential, N400, and a Brain symmetry index were used to measure whether the meaning of the paired stimulus was registered in subliminal semantic processing. Analysis didn’t detect a significant difference in N400 response and EEG signal symmetry between correlated and uncorrelated pairs under unconscious condition. These results support the view that semantic information of Chinese character processing is absent without consciousness created by CFS.展开更多
Neuroscientists have emphasized visceral influences on consciousness and attention,but the potential neurophysiological pathways remain under exploration.Here,we found two neurophysiological pathways of heartbrain int...Neuroscientists have emphasized visceral influences on consciousness and attention,but the potential neurophysiological pathways remain under exploration.Here,we found two neurophysiological pathways of heartbrain interaction based on the relationship between oxygen-transport by red blood cells(RBCs)and consciousness/attention.To this end,we collected a dataset based on the routine physical examination,the breaking continuous flash suppression(b-CFS)paradigm,and an attention network test(ANT)in 140 immigrants under the hypoxic Tibetan environment.We combined electroencephalography and multilevel mediation analysis to investigate the relationship between RBC properties and consciousness/attention.The results showed that RBC function,via two independent neurophysiological pathways,not only triggered interoceptive re-representations in the insula and awareness connected to orienting attention but also induced an immune response corresponding to consciousness and executive control.Importantly,consciousness played a fundamental role in executive function which might be associated with the level of perceived stress.These results indicated the important role of oxygen-transport in heart-brain interactions,in which the related stress response affected consciousness and executive control.The findings provide new insights into the neurophysiological schema of heartbrain interactions.展开更多
文摘Semantic processing is a high level cognition function of the human brain. It has been argued intensively whether this process could be accomplished in the absence of awareness. Continuous flash suppression (CFS) is a powerful approach to create stable unconscious state. In this study, subjects were required to observe a series of paired Chinese words and judge the correlation between them in CFS paradigm. A negative component of event related potential, N400, and a Brain symmetry index were used to measure whether the meaning of the paired stimulus was registered in subliminal semantic processing. Analysis didn’t detect a significant difference in N400 response and EEG signal symmetry between correlated and uncorrelated pairs under unconscious condition. These results support the view that semantic information of Chinese character processing is absent without consciousness created by CFS.
基金supported by the National Natural Science Foundation of China(31660274,31771247,and 31600907)the Reformation and Development Funds for Local Region Universities from the Chinese Government in 2020(00060607,ZCJK 2020-11).
文摘Neuroscientists have emphasized visceral influences on consciousness and attention,but the potential neurophysiological pathways remain under exploration.Here,we found two neurophysiological pathways of heartbrain interaction based on the relationship between oxygen-transport by red blood cells(RBCs)and consciousness/attention.To this end,we collected a dataset based on the routine physical examination,the breaking continuous flash suppression(b-CFS)paradigm,and an attention network test(ANT)in 140 immigrants under the hypoxic Tibetan environment.We combined electroencephalography and multilevel mediation analysis to investigate the relationship between RBC properties and consciousness/attention.The results showed that RBC function,via two independent neurophysiological pathways,not only triggered interoceptive re-representations in the insula and awareness connected to orienting attention but also induced an immune response corresponding to consciousness and executive control.Importantly,consciousness played a fundamental role in executive function which might be associated with the level of perceived stress.These results indicated the important role of oxygen-transport in heart-brain interactions,in which the related stress response affected consciousness and executive control.The findings provide new insights into the neurophysiological schema of heartbrain interactions.
