Paramedian reticular nucleus: a thermolytic area in the rat medulla oblongata

1990 ◽  
Vol 417 (4) ◽  
pp. 418-424 ◽  
Author(s):  
M. T. Lin ◽  
S. J. Won ◽  
L. J. Fan ◽  
C. Y. Chai
Keyword(s):  
Medulla Oblongata ◽  
Reticular Nucleus ◽  
Paramedian Reticular Nucleus

The effect of the lateral reticular nucleus of the medulla oblongata on the cerebellar cortex

1971 ◽  
Vol 2 (6) ◽  
pp. 439-443 ◽  
Author(s):  
Yu. I. Arshavskii ◽  
M. B. Berkinblit ◽  
I. M. Gel'fand ◽  
O. I. Fukson
Keyword(s):  
Cerebellar Cortex ◽  
Medulla Oblongata ◽  
Reticular Nucleus ◽  
Lateral Reticular Nucleus

Baroreceptor mechanisms controlling sympathetic nervous rhythms of central origin

1975 ◽  
Vol 228 (4) ◽  
pp. 1002-1003 ◽  
Author(s):  
DG Taylor ◽  
tgl Gebber
Keyword(s):  
Slow Wave ◽  
Cardiac Cycle ◽  
Reticular Nucleus ◽  
Direct Result ◽  
Renal Nerves ◽  
Central Origin ◽  
Baroreceptor Reflexes ◽  
Paramedian Reticular Nucleus ◽  
Sympathetic Nervous ◽  
Made In

A study was made in the anesthetized cat of the slow wave of sympathetic nervous discharge (SND) locked in a 1:1 relation to the cardiac cycle (3 cycle/s periodicity). SND was recorded from the preganglionic splanchnic and postganglionic renal nerves. The data contradict the generally accepted view that the slow wave occurs as the direct result of a waxing and waning of baroreceptor nervous discharge. Although baroreceptor denervation unlocked the phase relations between SND and the cardiac cycle, the slow wave persisted and its duration was not changed. Furthermore, the slow wave was aborted by stimuli delivered to the baroreceptor nerves or paramedian reticular nucleus during a time span which accounted for less than 1 percent of the cardiac cycle. It is concluded that the 3 cycle/s periodicity of SND is representative of a vasomotor rhythm of central origin which is entrained to the cardiac cycle by the baroreceptor reflexes. The sympathoinhibitory effect leading to the entrainment of the slow wave is mediated in the brainstem. ta spinal component of baroreceptor-induced sympathoinhibition also was demonstrated.

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