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Mid-fusiform Sulcus
The mid-fusiform sulcus is a shallow sulcus that divides the fusiform gyrus into lateral and medial partitions. Functionally, the MFS divides both large-scale functional maps and identifies fine-scale functional regions such as the anterior portion of the fusiform face area. Anatomy Cytoarchitectonically, the lateral and medial sides of the MFS are dissociable. The anterior and posterior portion of the MFS also have different long-range connections. The vertical occipital fasciculus terminates in the posterior aspects of the MFS, while the arcuate fasciculus terminates in the anterior portions of the MFS. History The mid-fusiform sulcus was first identified in 1896 by Gustav Retzius. Retzius is known for many other discoveries such as Cajal-Retzius cells. He first identified the MFS as the sulcus sagittalis gyri fusiformis. Since his label, there have been several other proposed labels, but the MFS nomenclature is the most widely accepted in present day. References {{Reflist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fusiform Gyrus
The fusiform gyrus, also known as the ''lateral occipitotemporal gyrus'','' ''is part of the temporal lobe and occipital lobe in Brodmann area 37. The fusiform gyrus is located between the lingual gyrus and parahippocampal gyrus above, and the inferior temporal gyrus below. Though the functionality of the fusiform gyrus is not fully understood, it has been linked with various neural pathways related to recognition. Additionally, it has been linked to various neurological phenomena such as synesthesia, dyslexia, and prosopagnosia. Anatomy Anatomically, the fusiform gyrus is the largest macro-anatomical structure within the ventral temporal cortex, which mainly includes structures involved in high-level vision. The term fusiform gyrus (lit. "spindle-shaped convolution") refers to the fact that the shape of the gyrus is wider at its centre than at its ends. This term is based on the description of the gyrus by Emil Huschke in 1854. (see also section on history). The fusiform gyrus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fusiform Face Area
The fusiform face area (FFA, meaning spindle-shaped face area) is a part of the human visual system (while also activated in people blind from birth) that is specialized for facial recognition. It is located in the inferior temporal cortex (IT), in the fusiform gyrus (Brodmann area 37). Structure The FFA is located in the ventral stream on the ventral surface of the temporal lobe on the lateral side of the fusiform gyrus. It is lateral to the parahippocampal place area. It displays some lateralization, usually being larger in the right hemisphere. The FFA was discovered and continues to be investigated in humans using positron emission tomography (PET) and functional magnetic resonance imaging (fMRI) studies. Usually, a participant views images of faces, objects, places, bodies, scrambled faces, scrambled objects, scrambled places, and scrambled bodies. This is called a functional localizer. Comparing the neural response between faces and scrambled faces will reveal areas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vertical Occipital Fasciculus
The vertical occipital fasciculus is a fascicle of white matter running vertically in the rear of the brain. It is found at least in primates. It "is the only major fiber bundle connecting dorsolateral and ventrolateral visual cortex." Early discovery Originally depicted by Carl Wernicke, who called it the ''senkrechte Occipitalbündel'' (vertical occipital bundle), the region was practically lost to scientific knowledge during the twentieth century. Theodor Meynert had described the brain's other white matter tracts as being horizontally oriented, and did not accept Wernicke's finding. Heinrich Obersteiner named the area the "fasciculus occipitalis perpendicularis", and Heinrich Sachs named the area the "stratum profundum convexitatis". It appeared in a 1918 edition of Gray's Anatomy, but fell into obscurity. A diffusion tensor imaging (DTI) study in 2004 noted an area of short-range association fibers in the lateral occipital lobe The occipital lobe is one of the four ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
