Analyse Biological Time-Series Data

Compiles functions to trim, bin, visualise, and analyse activity/sleep time-series data collected from the Drosophila Activity Monitor (DAM) system (Trikinetics, USA). The following methods were used to compute periodograms - Chi-square periodogram: Sokolove and Bushell (1978) , Lomb-Scargle periodogram: Lomb (1976) , Scargle (1982) and Ruf (1999) , and Autocorrelation: Eijzenbach et al. (1986) . Identification of activity peaks is done after using a Savitzky-Golay filter (Savitzky and Golay (1964) ) to smooth raw activity data. Three methods to estimate anticipation of activity are used based on the following papers - Slope method: Fernandez et al. (2020) , Harrisingh method: Harrisingh et al. (2007) , and Stoleru method: Stoleru et al. (2004) . Rose plots and circular analysis are based on methods from - Batschelet (1981) and Zar (2010) .