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Related to Motor nucleus: motor nucleus of trigeminal nerve
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In the present study, the volume, neuronal number and neuronal nuclear area of nucleus rotundus- a visual thalamic relay nucleus and nucleus ruber- a motor nucleus of domestic chick were investigated after giving sound stimulation in the prenatal period.
The sections include (1) middle frontal gyrus; (2) superior and middle temporal gyri; (3) inferior parietal lobule; (4) occipital cortex; (5) anterior cingulate gyrus; (6) amygdala; (7) hippocampus with dentate gyrus and entorhinal cortex; (8) basal ganglia at the level of the anterior commissure with caudate, putamen, globus pallidus, and the nucleus basalis of Meynert; (9) thalamus with subthalamic nucleus; (10) cerebellar cortex and dentate nucleus; (11) midbrain with substantia nigra; (12) pons with locus coeruleus; (13) and medulla with dorsal motor nucleus of the vagus and hypoglossal nucleus.
Rather than beginning in the substantia nigra and moving into the cerebellar regions, nerve damage may begin in the dorsal motor nucleus of the vagal nerve and progress upward into the midbrain, killing neurons all along its path.