Adolophs R (2002), Trust in the brain. Nat Neurosci 5(3):192-193. American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders, (4th ed., text revision). Washington, DC: Author, 2000. Amici R, Zamboni G, Perez E, Jones CA, Parmeggiani PL (1998), The influence of a heavy thermal load on REM sleep in the rat. Brain Res 781:252-258.