The hyperarousal model of insomnia
Insomnia is one of the most prevalent health complaints worldwide. It is defined by difficulties initiating or maintaining sleep or non-restorative sleep, accompanied by significant daytime impairments. Current aetiological models highlight the role of cognitive, emotional and physiological hyperarousal for the development and maintenance of the disorder, however, the pathophysiology is still poorly understood. Evidence for and against the hyperarousal model will be presented including current own studies in which multimodal neuroimaging techniqes were used to investigate the neurobiological basis of poor sleep.