|
KMID : 0355519920160020087
|
|
Korean Journal of Oral Biology
1992 Volume.16 No. 2 p.87 ~ p.92
|
|
|
The Neural Activity of Bulbar Reticular Formation during Cortically-Induced Mastication
|
|
|
|
|
Abstract
|
|
|
This experiment was performed to clarify the role of brainstem for rhythm generation of mastication induced by stimulation of cerebral cortex. Rabbits were anesthetized with urethane and a pair of wire electrode was inserted into anterior
digastric
and
masseter muscles, respectively. Experimental animal was placed to stereotaxic apparatus and occipital craniotomy and cervical laminectomy was performed to expose caudal brainstem. Cortically-induced mastication was evoked by electrical
stimulation
of
cerebral masticatory area with concentric bipolar electrode and neural activity of brainstem and EMGs of masseter and anterior digastric muscle were recorded.
@ES The results obtained were as follows:
@EN 1. DThe neural activity of bulbar reticular formation was recorded at rostral 2-4mm. Lateral 0.5-1.5mm to obex and 1.5-2.5mm below the bulbar surfafce.
2. The site that neural activity corresponding with EMGs of masticatory muscles was recorded was medial bulbar reticular formation(MBRF)
3. The neural activity of medial bulbar reticular formation(MBRF) was corresponded with anterior digastric or masseteric EMG, respectively.
4. The neural activity of medial bulbar reticular formation(MBRF) and anterior digastric EMG was simultaneously recorded by twin pulse stimulation of contralateral cerebral masticatory area, and stimulation of lpsilateral medial bulbar reticular
formation(MBRF) evoked anterior digastric EMG.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|