Abstract

This chapter discusses the results of the investigation of the Muratoff bundle in rhesus monkey brains. The MB is a semilunar, compact, fiber bundle located immediately above the head and body of the caudate nucleus, below and medial to the fronto-occipital fasciculus. Both the MB and the FOF are situated beneath the corpus callosum and medial to the corona radiata. The MB contains densely packed, horizontally running fibers leading to the caudate nucleus. These fibers arise from the dorsolateral and dorsomedial prefrontal region, the supplementary motor area, cingulate gyrus, posterior parahippocampal gyrus, medial and dorsal superior parietal lobule, and the caudal inferior parietal lobule, caudal superior temporal gyrus, and the medial and dorsal preoccipital region. Thus, the MB may be conceived of principally as a corticostriatal system from association and limbic areas. It also conveys fibers to the body of the caudate nucleus from the dorsal part of the motor cortex corresponding to the foot and trunk representations.