Dr. Johann Saphier

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Extracellular activity was recorded from tuberoinfundibular neurones in 28 urethane-anaesthetized pro-oestrous rats. In each rat the electrical activity of one antidromically identified neurone was analysed before and during electrical stimulation in the preoptic/anterior hypothalamic areas (PO/AH). This stimulation (50 Hz, 30 s on and 30 s off for 15 min)(More)
The firing of tuberoinfundibular neurones antidromically identified as projecting to the median eminence was recorded during electrical stimulation of the preoptic and/or anterior hypothalamic areas (PO/AH) of the rostral hypothalamus. Parameters of stimulation were chosen which are known to cause increased secretion of most adenohypophyseal hormones.(More)
Die zahlreichen, h~ufig sehr l~ng dauernden UnLersuchungen boten trotz der immer noeh rel~tiv mangelhaften Liehtquelle eine giinstige Gelegenheit zur Vervollkommnung der Untersuchungsteehnik. Sie wurde dutch die Fertigstellnng der Abbildungen [von Frl. B. N e r e s h e i m e r 1)] wesentlieh gesteigert. Bei dieser Gelegenheit konnten vor Mlem meine(More)
Animals with unilateral or bilateral lesions, with respectively 85 and 70% of intact preoptic area tissue remaining, returned to regular oestrous cycles. By comparison with sham-operated controls, rats with lesions had more days with a leucocytic smear in each of the 1st, 2nd or 3rd post-operative cycle, before returning to a 4-day cycle. Hormone(More)
Single unit activity was recorded from tuberoinfundibular neurones in urethane-anaesthetized pro-oestrous rats. Responses following single shock (0.2 Hz) stimulation of the preoptic area/ anterior hypothalamus (PO/AH) or nucleus accumbens (ACB) were recorded and computed for 137 single units. More cells were shown, by antidromic activation, to project to(More)
Der Kampf mit den technischen Hindernissen bot im Verlauf weiterer s Versuche fast stets zunehmende Schwierigkeiten, wie es, den Verh~ltnissen entsprechend, kaum anders zu erwarten war. Ihre Hauptquelle ist der Kampf urns LiGht. Die hervorragende Beleuchtungsquelle, wie sic E. Weil~ in seinen Versuchen verwendet hat, ist abgesehen von der nicht zu(More)
Action potentials were recorded from 174 neurones in the mediobasal hypothalamus of ovariectomized adult female rats exposed neonatally to monosodium glutamate (MSG) and from 145 neurones in control rats. All of the animals, which were anaesthetized with urethane, had been ovariectomized for at least 3 weeks and received two injections of oestradiol(More)
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