Ulrich Jürgens

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The effects of bilateral destruction of the cortical face area, anterior and posterior supplementary motor area and anterior cingular cortex on spontaneous vocalization were studied in 16 squirrel monkeys (Saimiri sciureus). Each type of lesion was made in two groups of two animals each. Both animals of a group received the same type of lesion at the same(More)
Lamotrigine (LTG) is a new antiepileptic drug (AED), chemically unrelated to the drugs in current use. Previous studies have shown that LTG has only a limited effect on other AEDs, but its own metabolism can be strongly induced or inhibited by the comedication. We investigated the influences of carbamazepine (CBZ), phenytoin (PHT), phenobarbital (PB),(More)
The present study is an attempt to find out the brain areas involved in the motor coordination of species-specific vocalization. For this purpose, high-frequency coagulations were placed in a systematic manner throughout the brainstem and posterior diencephalon in altogether 43 squirrel monkeys (Saimiri sciureus). The effect of these lesions on different(More)
With the aid of the autoradiographic tracing technique the projections from cortical limbic vocalization areas to the auditory cortex in the superior temporal gyrus were studied in the squirrel monkey. The vocalization areas were identified by exploring the anterior limbic cortex with moving electrodes until a site was found where electrical stimulation(More)
In 22 squirrel monkeys (Saimiri sciureus) vocalization-eliciting electrodes were implanted into the amygdala and along the trajectory of the stria terminalis. Then, lesions were placed in the stria terminalis, its bed nucleus, the ventral amygdalofugal pathway and several di- and mesencephalic structures in order to find out the pathways along which the(More)
In 3 squirrel monkeys (Saimiri sciureus) horseradish peroxidase was injected into the cortical larynx area within the lower sensorimotor face cortex. Retrogradely labeled cells were found in a continuous band extending all along the upper bank of the Sylvian fissure from Broca's area rostrally to the parietal association cortex (area 7) caudally. In(More)
As Germany enters the 21st century, the traditional system of corporate governance, often referred to as “Deutschland AG”, has come under intense pressure to change. This report seeks to analyze the recent dynamics of the system to assess the extent to which they have already led to an erosion of the traditional characteristics. Many of the distinct(More)
Objective: To investigate the transfer of lamotrigine in pregnancy and during lactation from a mother on lamotrigine treatment to her child. Methods: Concentrations of lamotrigine were measured by high-pressure liquid chromatography in umbilical cord serum and in serum samples of the mother and her child as well as in the mother's milk during the first five(More)