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Journal of Integrative Neuroscience  2019, Vol. 18 Issue (1): 87-93    DOI: 10.31083/j.jin.2019.01.103
Original Research Previous articles |
The effect of odor exposure time on olfactory cognitive processing: An ERP study
Bang-bei Tang1, #, Xin Wei2, 3, #, Gang Guo5, Feng Yu3, Ming Ji4, Haiyang Lang2, *(), Junye Liu2, *()
1 School of Electromechanic Engineering, Chongqing University of Arts and Sciences, Chongqing 402160, China
2 Department of Radiation Medicine, Fourth Military Medical University, Xi'an 710032, China
3 Institute of Social Psychology, School of Humanities and Social Sciences, Xi’an Jiaotong University, Xi'an 710049, China
4 School of Psychology, Shaanxi Normal University, 199 South Chang’an Road, Xi'an 710062, China
5 College of Automotive Engineering, Chongqing University, Chongqing 400044, China
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Abstract  

The present study aimed to investigate the effects of stimulus time duration on central nervous odor processing. Twenty-one young healthy males participate in our study. There are three odor mixtures in this study and every odor mixture has two different duration time (300 ms; 500 ms). The odor was presented via a computer - controlled olfactometer and EEG was recorded from 64 scalp locations. At behavioral level, the longer the odor stimulus was presented, the greater the concentration was perceived by participants. Electrophysiological data showed that longer duration time lengthened the latency of Negative waves of about 200 ms appeared in stimulation (N2) and Positive waves of about 300 ms appeared in stimulation (P3) components, besides, have a larger N2 amplitude than the shorter duration time condition in the mid-frontal and left frontal-temporal areas. These results revealed that duration time of odor mixture do have an influence on the central nervous odor processing.

Key words:  Odor mixture      oddball paradigm      olfaction      odor processing      event-related potentials     
Submitted:  10 January 2018      Accepted:  29 April 2018      Published:  30 March 2019     
Fund: 
  • 51375510/National Natural Science Foundation of China
  • 106112017CDJXF330013/Fundamental Research Funds for the Central Universities' China
*Corresponding Author(s):  Junye Liu E-mail: junyeliu@fmmu.edu.cn; Haiyang Lang Email: lsealhy@fmmu.edu.cn   
# These authors contribute equally.

Cite this article: 

Bang-bei Tang, Xin Wei, Gang Guo, Feng Yu, Ming Ji, Haiyang Lang, Junye Liu. The effect of odor exposure time on olfactory cognitive processing: An ERP study. Journal of Integrative Neuroscience, 2019, 18(1): 87-93.

URL: 

https://jin.imrpress.com/EN/10.31083/j.jin.2019.01.103     OR     https://jin.imrpress.com/EN/Y2019/V18/I1/87

Figure 1.  The distribution map of 64-channel EEG electrodes in human brain.

Figure 2.  The waveform diagram of each stimulus and duration time in the midline sites and the topographic map of target’s P3 amplitude.

Figure 3.  The waveform diagram of target stimulus in different time duration at LFT and RFT and the topographic map for N2 component.

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