- Insomnia related to dysthymia: polysomnographic and psychometric comparison with normal controls and acute therapeutic trials with trazodone. Saletu-Zyhlarz, G.M., Abu-Bakr, M.H., Anderer, P., Semler, B., Decker, K., Parapatics, S., Tschida, U., Winkler, A., Saletu, B. Neuropsychobiology (2001)