[引用][C] Respiratory neurones of the ventrolateral nucleus of the solitary tract of cat: vagal input, spinal connections and morphological identification
C Von Euler, JN Hayward, I Marttila, RJ Wyman - Brain Research, 1973 - Elsevier
C Von Euler, JN Hayward, I Marttila, RJ Wyman
Brain Research, 1973•ElsevierElectrical activity of single cells was recorded extracellularly in the vicinity of the solitary tract
complex in the medulla oblongata of pentobarbital anaesthetized, paralysed cats. The
anatomical location and gross morphological properties of some of the neurones were
determined by a fluorescent dye (Procion Yellow) injection technique.(2) Of a total of 279
cells studied, 261 cells fired rhythmically with some phase of the respiratory cycle, ie,
respiratory neurones. Most respiratory neurones (238 cells) discharged in phase with the …
complex in the medulla oblongata of pentobarbital anaesthetized, paralysed cats. The
anatomical location and gross morphological properties of some of the neurones were
determined by a fluorescent dye (Procion Yellow) injection technique.(2) Of a total of 279
cells studied, 261 cells fired rhythmically with some phase of the respiratory cycle, ie,
respiratory neurones. Most respiratory neurones (238 cells) discharged in phase with the …
Abstract
- (1)Electrical activity of single cells was recorded extracellularly in the vicinity of the solitary tract complex in the medulla oblongata of pentobarbital anaesthetized, paralysed cats. The anatomical location and gross morphological properties of some of the neurones were determined by a fluorescent dye (Procion Yellow) injection technique.
- (2)Of a total of 279 cells studied, 261 cells fired rhythmically with some phase of the respiratory cycle, i.e., respiratory neurones. Most respiratory neurones (238 cells) discharged in phase with the phrenic, i.e., they wereinspiratory neurones.
- (3)Most of the 73 anatomically identified cells were found in the ventrolateral nucleus of the solitary tract which proved a somewhat heterogenous nucleus with a roughly equal mixture of ‘inspiratory-vagal’, ‘inspiratory-non-vagal-spinal’ cells along with a few ‘inspiratory-expiratory’, expiratory and non-respiratory neurones.
- (4)Inspiratory neurones could be divided into 2 main groups on the basis of their vagal and spinal connections: (1) inspiratory neurones driven by electrical stimuli to the cervical vagus and influenced by lung inflations; (2) inspiratory neurones not influenced by vagal afferents but driven with short latency from the ventrolateral columns of the contralateral side of the spinal cord.
- (5)The ‘inspiratory-vagal’ cells showed inspiratory activity even when lung expansion in the inspiratory phase was prohibited, thus resembling the Rβ cells of von Baumgarten and Kanzow.
Elsevier
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