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Fig. 1 | BMC Neuroscience

Fig. 1

From: A mathematical model provides mechanistic links to temporal patterns in Drosophila daily activity

Fig. 1

Power spectrum of fly locomotor activity shows multiple peaks. a Schematic representation of fly activity measurement. Each time the enclosed fly crosses an IR beam, the computer receives a “1”. b Activity of a single wild type fruit fly measured in constant darkness. Subjective day/night time is shown in white/grey bars. c Power spectrum of the fly activity. Spectrum from 0 to 30 h is shown on top, dashed rectangle is enlarged in the lower panel. Power spectra calculated with Lomb–Scargle (LS, black) and maximum entropy spectral analysis (MESA, red) methods show the expected ~24 h circadian peak and additionally show a series of statistically significant peaks at lower \(T\). Dashed horizontal line represents statistical significance of 0.005 for the Lomb–Scarge spectrum. Peak positions detected by LS and MESA agree to within 2 %

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