摘要Brain asymmetry for processing visual information is widespread in animals. However, it is still unknown how the complexity of the underlying neural network activities represents this asymmetrical pattern in the brain. In the present study, we investigated this complexity using the approximate entropy (ApEn) protocol for electroencephalogram (EEG) recordings from the forebrain and midbrain while the music frogs (Nidirana daunchina) attacked prey stimulus. The results showed that (1) more significant prey responses were evoked by the prey stimulus presented in the right visual field than that in the left visual field, consistent with the idea that right-eye preferences for predatory behaviors exist in animals including anurans; (2) in general, the ApEn value of the left hemisphere (especially the left mesencephalon) was greatest under various stimulus conditions, suggesting that visual lateralization could be reflected by the dynamics of underlying neural network activities and that the stable left-hemisphere dominance of EEG ApEn may play an important role in maintaining this brain asymmetry.