• Early and Later Life Stress Alter Brain Activity and Sleep in Rats 

      Mrdalj, Jelena; Pallesen, Ståle; Milde, Anne Marita; Jellestad, Finn Konow; Murison, Robert; Ursin, Reidun; Bjorvatn, Bjørn; Grønli, Janne (Peer reviewed; Journal article, 2013-07-26)
      Exposure to early life stress may profoundly influence the developing brain in lasting ways. Neuropsychiatric disorders associated with early life adversity may involve neural changes reflected in EEG power as a measure ...
    • Increased Health Risk in Subjects with High Self-Reported Seasonality 

      Øyane, Nicolas Melchior Frederic; Ursin, Reidun; Pallesen, Ståle; Holsten, Fred; Bjorvatn, Bjørn (Peer reviewed; Journal article, 2010-03-03)
      Background: Seasonal variations in mood and behaviour, termed seasonality, are commonly reported in the general population. As a part of a large cross-sectional health survey in Hordaland, Norway, we investigated the ...
    • Midlife insomnia and subsequent mortality: the Hordaland health study 

      Sivertsen, Børge; Pallesen, Ståle; Glozier, Nick; Bjorvatn, Bjørn; Salo, Paula; Tell, Grethe Seppola; Ursin, Reidun; Øverland, Simon (Peer reviewed; Journal article, 2014-07-15)
      Background: Previous research suggests a possible link between insomnia and mortality, but findings are mixed and well-controlled studies are lacking. The aim of the current study was to examine the effect of insomnia in ...