Evaluation of Potential Causes of Nap Modulated Tinnitus

1. \- Background : Tinnitus is a really important concern due to its high prevalence (10% world population) and its deteriorating effects on life quality. Subjective tinnitus still remains a scientific enigma because of its partial elucidation. The limited knowledge on its causes can be partially attributed to its intrinsic heterogeneity. In questionnaires previous to this study, 34% of participants showed a characteristic symptomatology of interactions between tinnitus and their sleep : they feel their tinnitus at its maximum intensity after sleeping periods (nap and sleep). In most cases they describe a frank rise of the intensity, compared in scientific papers to the "exploding head syndrome". Therefore this study aims to determine what are the main physiopathological processes correlated to the rises of tinnitus 2. \- Objectives : Estimate the correlations between tinnitus intensity changes (before and after the nap) and the number of sleep apneas. Secondary measurements are described in the outcome field.