cerebral peduncle


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cerebral peduncle

[sə′rē·brəl pi′dəŋ·kəl]
(cell and molecular biology)
One of two large bands of white matter (containing descending axons of upper motor neurons) which emerge from the underside of the cerebral hemispheres and approach each other as they enter the rostral border of the pons.
References in periodicals archive ?
The circulation of the cerebral peduncle is mainly supplied by perforating branches from the collicular artery, posteromedial choroidal artery, and circumflex branches from the pi or p2 segment of PCA.
It crosses the superior cerebellar artery close to the cerebral peduncles, passes the lateral edge of the clivus bone, and runs under the petroclinoidal ligament into the cavernous sinus between the double layer of dura and connective tissue at its lateral border, just below the oculomotor nerve and above the ophthalmic branch of the trigeminal (5th cranial) nerve.
The deficits are attributed to pressure on the contralateral cerebral peduncle, which leads to an indentation in the crus, called Kernohan's notch.
Signal intensity was observed at the bilateral globus pallidus, hypothalamus, bilateral cerebral peduncles, nucleus ruber, pons posterior, cerebellar dentate nuclei, bilateral periventricular deep white matter, and subthalamic nuclei and secondary ischaemia on T2-weighted images (Figures: 1a and 1b).
(1) The 'roots' of the molar tooth are represented by thick, perpendicular, non-decussated superior cerebellar peduncles, while the 'body' of the molar tooth is formed by the cerebral peduncles of the brainstem with a deep interpeduncular fossa (Fig.
Compared with controls, TBI patients showed marked abnormalities in the middle cerebral peduncles, in cingulum bundles, and in the right orbitofrontal white matter - areas that have been predicted by computer simulations to sustain the most intense stresses in a blast.
Structures arising from the mesencephalon are the superior and inferior colliculi of the tectum, cerebral peduncles, optic lobes, optic tectum, tegmentum and somatic motor neurons of cranial nerves III and IV.

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