![]() The posterior fibers (called the postcommissural fornix) end through the mammillary body of the hypothalamus. ![]() ![]() The anterior fibers (called precommissural fibers) end in the septal region and nucleus accumbens 1,2. bilateral columns (anterior pillars): curve anteriorly and dives inferiorly into the hypothalamus (mammillary bodies)Īt the level of the anterior commissure, the fornix divides into anterior and posterior fibers. We present a systematic divide and conquer methodology for analyzing three-dimensional (3D) multi-parameter images of brain.body: from the merging of the crura, provides one of two major paths through which the hippocampi communicate with each other.bilateral crura: ascending anterior to the the splenium of the corpus callosum at the level of the superior colliculus (best seen on coronal images).The hippocampus is part of the limbic system, and plays important roles in the. Humans and other mammals have two hippocampi, one in each side of the brain. The alveus joins to form the fimbria of the hippocampus. The fimbria of each hippocampus thickens and then splits off from the hippocampus to form the crus (leg) of the fornix. The hippocampus (via Latin from Greek, ' seahorse ') is a major component of the brain of humans and other vertebrates. It is a curvilinear bundle of white matter fibers that begins as a group of myelinated fibers called the alveus. Roughly C-shaped, the fornix extends from the hippocampus to the mammillary bodies of the hypothalamus and the anterior nuclei of the thalamus.
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