Professor Dr. phil. et med. E. Gellhorn

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Choosing the contraction of the normal nictitating membrane as the indicator of the neurogenic and that of the denervated nictitating membrane as the indicator of the hormonal (adrenomedullary) response it is shown that increasing excitation of the posterior division of the hypothalamus or stimulation of the medulla oblongata leads gradually from a(More)
1. The effect of stimulation of the sympathetic division of the hypothalamus on gut and cardiovascular system shows two phases: 1. the sympathetic phase which appears mainly during stimulation and is characterized by inhibition of the gut and rise in blood pressure and heart rate; 2. a phase of delayed excitation of the gut appearing either immediately(More)
Stimulation in cats of the hypothalamus in combination with reflex stimulation of the sciatic nerve or cutaneous nerve endings was used for the study of spatial summation of the sympathetic system with the nictitating membrane, the blood pressure and the heart rate as indicators. If subthreshold stimuli are chose they become effective in combination; if(More)
It was shown in a preceding paper ~ that stimulation of the sympathetic division of the hypothalamus may result in sympathetic excitation of the cardiovascular system and parasympathetic excitation of the gut. In view of the faet ' that these findings are contrary to the widely held assumption that the sympathetie system discharges as a whole, a further(More)
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