Brain cerebral peduncle

Fig. 5. The plate illustrates the ventral midbrain tegmentum as illustrated in the atlas of the rat brain of Swanson (1992), at levels approximately equivalent to those shown in Fig. 4. B and D are images of Nissl-stained sections. Abbreviations CLI, central linear nucleus of the raphe cpd, cerebral peduncle DGlb, dentate gyrus, lateral blade EW, Edinger-Westphal nucleus fr, fasciculus retroflexus hf, hippocampal fixure IF, interfascicular...

Fig. 5.1. Brain CT images showing a large hypodense (arrows) edematous cerebral infarct in the distribution of the middle cerebral artery, with midline shift. Such large infarcts cause herniation of the cingulate gyrus under the falx cerebri of the ispsilateral uncus under the tentorium to compress the oculomotor nerve, posterior cerebral artery and brainstem and of the contralateral cerebral peduncle to cause ipsilateral hemiparesis.

Fig. 5.14. Right temporal lobe intracerebral hemorrhage due to a ruptured MCA aneurysm. Beside basal subarachnoid hemorrhage CT reveals brain edema, compression of the basal cisterns and the cerebral peduncle...

A relationship between substantia nigra lesions, striatal DA and movement disturbance was demonstrated by making unilateral lesions in the ventromedial tegmentum of the upper brain stem. This caused loss of cells in the substantia nigra, decrease of striatal DA and NA but not 5HT and contralateral hypokinesis [130, 131]. If lesions were made in dorsomedial fibres of the cerebral peduncle then striatal 5HT decreased [132]. Lesions of the above types cause not only depletion of the amines but also of the enzymes necessary for their synthesis, tyrosine hydroxylase, tryptophan hydroxylase and aromatic amino acid decarboxylase [133, 134]. 

Suzuki K, Wakayama Y, Takada H, et al [A case of chronic toluene intoxication with abnormal MRI findings abnormal intensity areas in cerebral white matter, basal ganglia, internal capsule, brain stem and middle cerebellar peduncle] (English abstract). Rinsho Shinkeigaku 32 84-87,1992 Tarsh MJ Schizophreniform psychosis caused by sniffing toluene. Journal of Social and Occupational Medicine 29 131-133, 1979 Uitti RJ, Snow BJ, Shinotoh H, et al Parkinsonism induced by solvent abuse. Ann Neurol 35 616-619, 1994... 

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