Mating Signals Indicating Sexual Receptiveness Induce Unique Spatio-Temporal EEG Theta Patterns in Frog
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1
Chinese Academy of Sciences, Chengdu Institute of Biology, China
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2
University of Electronic Science and Technology of China, China
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3
Univ Maryland, Psychology, United States
Female mate choice is of importance for individual fitness as well as a determining factor in genetic diversity and speciation. Nevertheless relatively little is known about how females process information acquired from males during mate selection. In the Emei music frog, Babina daunchina, males normally call from hidden burrows and females in the reproductive stage prefer male calls produced from inside burrows compared with ones from outside burrows. The present study evaluated changes in electroencephalogram (EEG) power output in four frequency bands induced by male courtship vocalizations on both sides of the telencephalon and mesencephalon in females. The results show that (1) both the values of left hemispheric theta relative power and global lateralization in the theta band are modulated by the sexual attractiveness of the acoustic stimulus in the reproductive stage, suggesting theta oscillation is closely correlated with information processing and decision making; (2) mean relative power in the beta band is significantly greater in the mesencephalon than the left telencephalon, regardless of reproductive status or the biological significance of signals, indicating it is associated with processing acoustic features and (3) relative power in the delta and alpha bands are not affected by reproductive status or acoustic stimuli. The results imply that EEG power in the theta and beta bands reflected different processes related to acoustic signal processing with the theta band reflecting decision making processes closely related to mate choice in anurans.
Keywords:
EEG,
Frog,
mate choice,
theta patterns,
Acoustic Stimulation
Conference:
Tenth International Congress of Neuroethology, College Park. Maryland USA, United States, 5 Aug - 10 Aug, 2012.
Presentation Type:
Poster (but consider for student poster award)
Topic:
Hormones and Sex Differences
Citation:
Fang
G,
Cui
J,
Yao
D,
Brauth
SE and
Tang
Y
(2012). Mating Signals Indicating Sexual Receptiveness Induce Unique Spatio-Temporal EEG Theta Patterns in Frog.
Conference Abstract:
Tenth International Congress of Neuroethology.
doi: 10.3389/conf.fnbeh.2012.27.00447
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Received:
25 May 2012;
Published Online:
07 Jul 2012.
*
Correspondence:
Dr. Guangzhan Fang, Chinese Academy of Sciences, Chengdu Institute of Biology, Chengdu,, Sichuan, 610041, China, aleaf@yahoo.cn