actigraphy

actigraphy (uncountable)

1. The use of the actigraph to record the movements of a sleeping subject, and analyze the subject's sleep patterns.
   • 2006, Steven Jones; Richard P. Bentall, The Psychology of Bipolar Disorder, Oxford University Press:

     With actigraphy, the participant wears a wrist band with a small acceleration sensor that records movement over preset epochs.

   • 2021 April 8, Pedro Bessone; Gautam Rao; Frank Schilbach; Heather Schofield; Mattie Toma, “The Economic Consequences of Increasing Sleep among the Urban Poor”, in The Quarterly Journal of Economics, number qjab013, →DOI, →ISSN:

     The urban poor in developing countries face challenging living environments, which may interfere with good sleep. Using actigraphy to measure sleep objectively, we find that low-income adults in Chennai, India sleep only 5.5 hours per night on average despite spending 8 hours in bed.