P1‐322: SLEEP QUALITY AND COGNITION IN PATIENTS WITH ALZHEIMER'S DISEASE. (1st July 2006) - Piñol, Gerard; Torres, Gerard; Minguez, Olga; Gibert, Aurora; Carnes, Anna; Huerto, Raquel; Tahan, Nuria; Fatzekas, Faride; Barbe, Ferran