• Florent G Revel, Juergen Gottowik, Sylvia Gatti, Joseph G Wettstein, and Jean-Luc Moreau.
• CNS Discovery, F. Hoffmann-La Roche Ltd., Basel, Switzerland. florent.revel@roche.com
• Neurosci Biobehav Rev. 2009 Jun 1;33(6):874-99.

AbstractInsomnia, the most common sleep disorder, is characterized by persistent difficulty in falling or staying asleep despite adequate opportunity to sleep, leading to daytime fatigue and mental dysfunction. As sleep is a sophisticated physiological process generated by a network of neuronal systems that cannot be reproduced in-vitro, pre-clinical development of hypnotic drugs requires in-vivo investigations. Accordingly, this review critically evaluates current and putative rodent models of insomnia which could be used to screen novel hypnotics. Only few valid insomnia models are currently available, although many experimental conditions lead to disturbance of physiological sleep. We categorized these conditions as a function of the procedure used to induce perturbation of sleep, and we discuss their respective advantages and pitfalls with respect to validity, feasibility and translational value to human research.

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