Yansu LIU,Yanzhu FAN,Fei XUE,et al.Changes in Electroencephalogram Approximate Entropy Reflect Auditory Processing and Functional Complexity in Frogs[J].Asian Herpetological Research(AHR),2016,7(3):180-190.[doi:10.16373/j.cnki.ahr.160006]
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Changes in Electroencephalogram Approximate Entropy Reflect Auditory Processing and Functional Complexity in Frogs
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Asian Herpetological Research[ISSN:2095-0357/CN:51-1735/Q]

2016 VoI.7 No.3
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Changes in Electroencephalogram Approximate Entropy Reflect Auditory Processing and Functional Complexity in Frogs
Yansu LIU1 Yanzhu FAN2 Fei XUE3 Xizi YUE3 Steven E. BRAUTH4 Yezhong TANG3 and Guangzhan FANG3*
1 Sichuan Nursing Vocational College. No.173, Longdu Nan Road, Longquan district, Chengdu, Sichuan, China
2 College of Life Science, Northwest Normal University. No. 967 Anning East Road, Lanzhou, Gansu, China
3 Chengdu Institute of Biology, Chinese Academy of Sciences. No. 9 Section 4, Renmin Nan Road, Chengdu, Sichuan, China
4 Department of Psychology, University of Maryland, College Park MD 20742, USA
electroencephalogram (EEG) approximate entropy (ApEn) complexityadvertisement call frog
Brain systems engage in what are generally considered to be among the most complex forms of information processing. In the present study, we investigated the functional complexity of anuran auditory processing using the approximate entropy (ApEn) protocol for electroencephalogram (EEG) recordings from the forebrain and midbrain while male and female music frogs (Babina daunchina) listened to acoustic stimuli whose biological significance varied. The stimuli used were synthesized white noise (reflecting a novel signal), conspecific male advertisement calls with either high or low sexual attractiveness (reflecting sexual selection) and silence (reflecting a baseline). The results showed that 1) ApEn evoked by conspecific calls exceeded ApEn evoked by synthesized white noise in the left mesencephalon indicating this structure plays a critical role in processing acoustic signals with biological significance; 2) ApEn in the mesencephalon was significantly higher than for the telencephalon, consistent with the fact that the anuran midbrain contains a large well-organized auditory nucleus (torus semicircularis) while the forebrain does not; 3) for females ApEn in the mesencephalon was significantly different than that of males, suggesting that males and females process biological stimuli related to mate choice differently.


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Last Update: 2016-09-25