Ascending noradrenaline neurons from the pons and the medulla oblongata

Zusammenfassung Nach einseitigen Läsionen im Rattenhirn an der Grenze zwischen Pons und Mesencephalon, konnte auf Grund von anterograden und retrograden neuronalen Veränderungen gezeigt werden, dass mindestens 2/3 der noradrenergenen Endigungen im Telencephalon und Diencephalon hauptsächlich zu den ungekreuzten, von Zellkörpern aus Pons und Medulla oblongata stammenden, Axonen gehören.     

Direct autonomic nerve fibers to the renal medulla in man

Résumé Des fibres nerveuses passent directement du plexus nerveux des artères arcuates aux artérioles efférentes juxtamédullaires et aux vasa recta. Il est donc possible, que le contrôle neural de la distribution du sang entre le cortex et la medulla soit indépendant du passage du sang aux glomeruli.

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This investigation was supported by the Medical Research Council of Canada, Grant No. MA-3169.     

Presynaptic depolarization of olfactory afferent fibers in cat prepyriform cortex

Resumen El efecto de estímulos condicionantes sobre el potencial evocado del área prepiriforme fué estudiado en gatos. La estimulación del bulbo olfatorio y de la corteza prepiriforme contralateral provocan inhibiciones de larga duración (> de 100 mseg); estas pertenecen al tipo presináptico a juzgar por la depolarización aferente primaria (DAP) de los terminales axónicos y los efectos desinhibitorios de la picrotoxina.     

Spontaneous miniature potentials in primary afferent fibres

Summary Intracellular recording from primary afferent fibres of the isolated frog spinal cord revealed the existence of spontaneous synaptic activity, related probably to the firing of presynaptic inhibitory fibres.     

Effects of histamine,histidine and imidazole acetic acid on neurones of the medulla oblongata of the cat

Zusammenfassung Mikroelektrophoretisch verabreichtes Histamin, Histidin und Imidazolessigsäure hemmen die Aktivität von Neuronen der Medulla oblongata der Katze. Strychnin, welches in reversibler Weise die hemmende Wirkung von Glycin blockiert, zeigt keinen Antagonismus zu Imidazolessigsäure.     

Spontaneous miniature potentials in primary afferent fibres.

Intracellular recording from primary afferent fibres of the isolated frog spinal cord revealed the existence of spontaneous synaptic activity, related probably to the firing of presynaptic inhibitory fibres.     

Intraluminal bile salt increases rate of firing in afferent fibers from the small intestine of the rat

Summary Perfusion of a rat intestinal segment with a solution containing sodium deoxycholate (8 mM) increases the rate of firing in periarterial afferent nerves from the gut. This observation indirectly supports our earlier proposal that bile salt evokes a net fluid secretion in the small intestine via an activation of the enteric nervous system.This study was supported by grants from the Swedish Medical Research Council (2855), The Medical Council of Swedish Life Insurance Companies and the Faculty of Medicine, University of Göteborg.     

Intraluminal bile salt increases rate of firing in afferent fibers from the small intestine of the rat

Perfusion of a rat intestinal segment with a solution containing sodium deoxycholate (8 mM) increases the rate of firing in periarterial afferent nerves from the gut. This observation indirectly supports our earlier proposal that bile salt evokes a net fluid secretion in the small intestine via an activation of the enteric nervous system.     

Cardiopulmonary origin of vagal afferent fibers exerting a tonic reflex influence on the circulation

Riassunto Le fibre afferenti presenti nel vago cervicale, e dotate di tonica attività inibitrice sui fenomeni circolatori, originano da aree recettrici intratoraciche, non provengono in misura importante dall'arco aortico, ma si dipartono da ampie zone della regione cardio-polmonare.

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This research has been sponsored in part by Wright Air Development Division of the Office of Aerospace Research, United States Air Force, through its European Office, with Contract No. AF 61 (052)-253, and by Consiglio Nazionale delle Ricerche.