What is a topographic organization?
the arrangement of components in a structure, particularly the orderly spatial relationship between the distribution of neural receptors in an area of the body and a related distribution of neurons representing the same functions in cortical sensory regions of the brain.
What is topographic mapping in psychology?
Topographic maps are a widespread organizing feature of the central nervous system whereby spatial relations between cells are preserved between the projecting set of neurons and the receiving set.
Why is topographical organization in the brain useful?
Topographic organization provides invaluable information about brain function and structure. More recently, the presence of topographic organization has been used to delineate boundaries between cortical areas, with V1 again providing a paradigmatic example.
What is topography of the brain?
Electrodes placed on the surface of the cortex can be used to stimulate the brain of a conscious patient or record its activity. these so-called ‘topographic maps’ exist in all of the brain’s sensory systems, as well as in its motor system. they arise during brain development, and are vital for information processing.
What is Retinotopic Organisation?
Retinotopy (also known as retinal mapping) is the mapping of visual information from the retina to neurons in the brain. The parts of the brain which receive visual information are organized into retinotopic maps (or visual field maps).
What is topographic nerve?
A topographic map is the ordered projection of a sensory surface, like the retina or the skin, or an effector system, like the musculature, to one or more structures of the central nervous system. Topographic maps can be found in all sensory systems and in many motor systems.
What is the purpose of a topographic map?
Topographic maps are a detailed record of a land area, giving geographic positions and elevations for both natural and man-made features. They show the shape of the land the mountains, valleys, and plains by means of brown contour lines (lines of equal elevation above sea level).
What are the two tracts form the direct pathways?
It contains mostly motor axons and is made up of two separate tracts in the spinal cord: the lateral corticospinal tract and the anterior corticospinal tract.
What is Spatiotopic Organisation?
Spatiotopy is a fundamental organizing principle of the visual brain. Using functional magnetic resonance imaging, we have demonstrated reliable data, consistent with spatiotopic organization in the human superior colliculi.