EFFECT OF AUTONOMIC AFFERENT IMPULSES ON BRAINSTEM NEUTRONS
Abstract
Methods were developed for production of sharpened platinum-wire electrodes with glass isolation; and for recording from moving tissue. A new stereotaxic machine is introduced which allows changing arbitrarily the point of drillhole on the skull and the direction of approach with the electrode for a given target. A technique for the large exposure of the rootlets of the ninth and tenth cranial nerves and a new method for histological determination of the site of the tip of micropipettes in tissue are presented. The usefulness of different kinds of microelectrodes for different purposes is discussed. Analysis of recordings from single filaments of the vagal rootlets has shown that cardiac and respiratory afferent activity enters the brain at different levels. Chronic degeneration experiments with transsection of caudal (respiratory) rootlets of the vagus nerve showed terminal degeneration in a region rostrolateral to the obex and ventral to the tractus solitarius. Intracellular records of respiratory nerve cells in the medulla oblongata of cats were obtained. The rhombencephalon was explored for impulses correlated with heart beats. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 1961
- Accession Number
- AD0272254
Entities
People
- Rudolf Von Baumgarten
Organizations
- University of Göttingen