TY - JOUR VL - 3 EP - 97 N2 - 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. IS - 1 A1 - Schredl, Michael SP - 95 UR - https://journals.ub.uni-heidelberg.de/index.php/IJoDR/article/view/507 Y1 - 2010/// ID - heidok10865 KW - Dream content KW - external stimuli KW - internal stimuli AV - none JF - International Journal of Dream Research TI - History of dream research: The dissertation ?Entstehung der Träume (Origin of dreams)? of Wilhelm Weygandt published in 1893 ER -