Ludwig Julius Budge (11 September 1811, in Wetzlar – 14 July 1888, in Greifswald) was a German physiologist.
He studied medicine at the Universities of Marburg, Berlin and Würzburg, and following graduation worked as a general practitioner in Wetzlar and Altenkirchen.
[1] He is known for his anatomical and physiological investigations of the autonomic nervous system, discovering that sympathetic nerve stimulation brings about pupillary dilatation and that oculomotor nerve stimulus produces constriction.
[2] With neurophysiologist Augustus Volney Waller, he was awarded the Prix Montyon by the French Académie des Sciences for research in identifying the segments of spinal cord that control operation of the ciliary muscles.
[4] With Leonard Landois, he demonstrated the phenomena of cardiac arrest during electrical stimulation of the vagus nerve,.