Publications by authors named "Masayoshi Ikarashi"

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acquires seconds-scale rhythmic behavior.

J Exp Biol 2021 Apr 1. Epub 2021 Apr 1.

Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-Ku, Sendai, 980-8577, Japan

Detection of the temporal structure of stimuli is crucial for prediction. While perception of interval timing is relevant for immediate behavioral adaptations, it has been scarcely investigated, especially in invertebrates. Here we examined if the fruit fly, , can acquire rhythmic behavior in the range of seconds. To this end, we developed a novel temporal conditioning paradigm utilizing repeated electric shocks. Combined automatic behavioral annotation and time-frequency analysis revealed that behavioral rhythms continued after cessation of the shocks. Furthermore, we found that aging impaired interval timing. This study thus not only demonstrated the ability of insects to acquire behavioral rhythms of a few seconds, but highlighted a life-course decline of temporal coordination, that is common also in mammals.
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April 2021