• A pilot study of impulse radio ultra wideband radar technology as a new tool for sleep assessment 

      Pallesen, Ståle; Grønli, Janne; Myhre, Kenneth; Moen, Frode; Bjorvatn, Bjørn; Hanssen, Ingar; Heglum, Hanne Siri Amdahl (Journal article; Peer reviewed, 2018)
      Study Objectives: To validate Impulse radio ultra wideband pulse-doppler radar technology against polysomnography (PSG) for sleep assessment. Methods: In all, 12 participants were recruited and their overnight sleep was ...
    • Cardiovascular Health Effects of Shift Work with Long Working Hours and Night Shifts: Study Protocol for a Three-Year Prospective Follow-Up Study on Industrial Workers 

      Lunde, Lars-Kristian; Skare, Øivind; Mamen, Asgeir; Sirnes, Per Anton; Aass, Hans Christian Dalsbotten; Øvstebø, Reidun; Goffeng, Elisabeth Martinsen; Matre, Dagfinn; Nielsen, Pia; Heglum, Hanne Siri Amdahl; Hammer, Stine Eriksen; Skogstad, Marit (Journal article; Peer reviewed, 2020)
      There is a plausible association between shift work and cardiovascular disease (CVD), which may be due to disruption of the circadian rhythm causing hormonal changes and metabolic disturbances, resulting in high blood ...
    • Contact-free actigraphy: Measuring sleep with a radar sensor 

      Heglum, Hanne Siri Amdahl (Doctoral theses at NTNU;2023:68, Doctoral thesis, 2023)
      Background Sleep is an essential biological process, and sleep deprivation and sleep-related disorders have devastating personal and societal consequences. The diagnosis and effective treatment of sleeprelated problems ...
    • Contact-free radar recordings of body movement can reflect ultradian dynamics of sleep 

      Heglum, Hanne Siri Amdahl; Drews, Henning Johannes; Kallestad, Håvard; Vethe, Daniel; Langsrud, Knut; Sand, Trond; Engstrøm, Morten (Peer reviewed; Journal article, 2022)
      This work aimed to evaluate if a contact-free radar sensor can be used to observe ultradian patterns in sleep physiology, by way of a data processing tool known as Locomotor Inactivity During Sleep (LIDS). LIDS was designed ...
    • Developing a Multivariate Prediction Model for Sleep Apnea from Polysomnography Data 

      Heglum, Hanne Siri Amdahl (Master thesis, 2016)
      Recent years have seen a rapid expansion of consumer sleep monitoring devices, using a wide variety of cheap and accessible sensor technology. However, these products tend to be seriously lacking in terms of validation, ...
    • Distinguishing sleep from wake with a radar sensor: A contact-free real-time sleep monitor 

      Heglum, Hanne Siri Amdahl; Kallestad, Håvard; Vethe, Daniel; Langsrud, Knut; Sand, Trond; Engstrøm, Morten (Journal article; Peer reviewed, 2021)
      This work aimed to evaluate whether a radar sensor can distinguish sleep from wakefulness in real time. The sensor detects body movements without direct physical contact with the subject and can be embedded in the roof of ...
    • Evening light environments can be designed to consolidate and increase the duration of REM-sleep 

      Vethe, Daniel; Drews, Henning Johannes; Scott, Janine Linda; Engstrøm, Morten; Heglum, Hanne Siri Amdahl; Grønli, Janne; Wisor, J.P.; Sand, Trond; Lydersen, Stian; Kjørstad, Kaia; Faaland, Patrick; Vestergaard, Cecilie Lund; Langsrud, Knut; Kallestad, Håvard (Peer reviewed; Journal article, 2022)
      Evening exposure to short-wavelength light has disruptive effects on circadian rhythms and sleep. These effects can be mitigated by blocking short-wavelength (blue) frequencies, which has led to the development of evening ...