Participation of the medial reticular formation of the medulla oblongata in the supraspinal control of locomotor and postural activities in the guinea pig

The influence of microinjections of novocaine (1.5 microliters of a 2% solution) into the ventromedial areas of the reticular formation of the medulla oblongata on the effects of electrical stimulation of the mesencephalic locomotor region, and of adequate stimulation of the vestibular apparatus, wa...

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Bibliographic Details
Published in:Neuroscience and behavioral physiology 1992-07, Vol.22 (4), p.336-342
Main Authors: Marlinskii, V V, Voitenko, L P
Format: Article
Language:English
Subjects:
Animals
Decerebrate State - physiopathology
Electromyography
Guinea Pigs
Medulla Oblongata - anatomy & histology
Medulla Oblongata - physiology
Microinjections
Motor Activity - physiology
Posture - physiology
Procaine - pharmacology
Reticular Formation - physiology
Space life sciences
Spinal Cord - anatomy & histology
Spinal Cord - cytology
Spinal Cord - physiology
Stereotaxic Techniques
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Summary:The influence of microinjections of novocaine (1.5 microliters of a 2% solution) into the ventromedial areas of the reticular formation of the medulla oblongata on the effects of electrical stimulation of the mesencephalic locomotor region, and of adequate stimulation of the vestibular apparatus, was investigated in experiments on decerebrate guinea pigs. It was demonstrated that such injections are accompanied by a reversible increase in the threshold of stimulation of the region indicated, necessary for the initiation of locomotor rhythmicity, as well as by the suppression of vestibular influences on the activity of the flexor muscles of the extremities. The role of the reticular formation of the brainstem in the supraspinal control of posture and locomotion is discussed.
ISSN:0097-0549
1573-899X
DOI:10.1007/BF01182876