%0 Journal Article %A Schredl, Michael %D 2010 %F heidok:10865 %J International Journal of Dream Research %K Dream content, external stimuli, internal stimuli %N 1 %P 95-97 %T History of dream research: The dissertation “Entstehung der Träume (Origin of dreams)” of Wilhelm Weygandt published in 1893 %U https://archiv.ub.uni-heidelberg.de/volltextserver/10865/ %V 3 %X This article reviews the dissertation of Wilhelm Weygandt that was supervised by Wilhelm Wundt. The claim of the author that all dreams emanate from sensory impression is not valid anymore; nevertheless the careful observations and experiments yielded interesting results which should be studied in-depth using modern methodology, for example, the effect of internal stimuli on dream content.