Computes interdaily stability (IS), intradaily variability (IV) & the relative amplitude (RA) from actigraphy data as described in Blume et al. (2016) <doi:10.1016/j.mex.2016.05.006> and van Someren et al. (1999) <doi:10.3109/07420529908998724>. Additionally, it also computes L5 (i.e. the 5 hours with lowest average actigraphy amplitude) and M10 (the 10 hours with highest average amplitude) as well as the respective start times. The flex versions will also compute the L-value for a user-defined number of minutes. IS describes the strength of coupling of a rhythm to supposedly stable zeitgebers. It varies between 0 (Gaussian Noise) and 1 for perfect IS. IV describes the fragmentation of a rhythm, i.e. the frequency and extent of transitions between rest and activity. It is near 0 for a perfect sine wave, about 2 for Gaussian noise and may be even higher when a definite ultradian period of about 2 hrs is present. RA is the relative amplitude of a rhythm. Note that to obtain reliable results, actigraphy data should cover a reasonable number of days.
| Version: | 0.7 |
| Imports: | ggplot2, grid, stringr, zoo |
| Published: | 2016-12-23 |
| Author: | Christine Blume Nayantara Santhi Manuel Schabus |
| Maintainer: | Christine Blume <christine.blume at sbg.ac.at> |
| License: | GPL-2 |
| URL: | https://www.r-project.org |
| NeedsCompilation: | no |
| CRAN checks: | nparACT results |
| Reference manual: | nparACT.pdf |
| Package source: | nparACT_0.7.tar.gz |
| Windows binaries: | r-devel: nparACT_0.7.zip, r-release: nparACT_0.7.zip, r-oldrel: nparACT_0.7.zip |
| OS X El Capitan binaries: | r-release: nparACT_0.7.tgz |
| OS X Mavericks binaries: | r-oldrel: nparACT_0.7.tgz |
| Old sources: | nparACT archive |
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