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Sensory maps information


Sensory maps are areas of the brain which respond to sensory stimulation, and are spatially organized according to some feature of the sensory stimulation. In some cases the sensory map is simply a topographic representation of a sensory surface such as the skin, cochlea, or retina. In other cases it represents other stimulus properties resulting from neuronal computation and is generally ordered in a manner that reflects the periphery. An example is the somatosensory map which is a projection of the skin's surface in the brain that arranges the processing of tactile sensation. This type of somatotopic map is the most common, possibly because it allows for physically neighboring areas of the brain to react to physically similar stimuli in the periphery or because it allows for greater motor control.

The somatosensory cortex is adjacent to the primary motor cortex which is similarly mapped. Sensory maps may play an important role in facilitating motor responses. Other examples of sensory map organization may be that adjacent brain regions are related through proximity of the receptors that they process as in the map of the cochlea in the brain, or that similar features are processed as in the map of the feature detectors or the retinotopic map, or that time codes are used in organization as in the maps of an owl's sense of direction via interaural time difference between ears. These examples exist in contrast to non-mapped or randomly distributed patterns of processing. An example of a non-mapped sensory processing system is the olfactory system where unrelated odorants are processed side-by-side in the olfactory bulb. In addition to non-mapped and mapped processing, stimuli may be processed under multiple maps as in the human visual system.

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Sensory maps

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Sensory maps are areas of the brain which respond to sensory stimulation, and are spatially organized according to some feature of the sensory stimulation...

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Sensory maps and brain development

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organization and pattern to an animal’s sensory processing. Sensory maps are the representations of sense organs as organized maps in the brain, and it is the fundamental...

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Cortical homunculus

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on a neurological "map" of the areas and proportions of the human brain dedicated to processing motor functions, and/ or sensory functions, for different...

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Trigeminal nerve

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a single primary sensory map of the body, when there are multiple primary maps. At least four separate, anatomically distinct sensory homunculi have been...

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Perception

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different areas processing different kinds of sensory information. Some of these modules take the form of sensory maps, mapping some aspect of the world across...

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Somatosensory system

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pressure, hot and cold, body position and pain. It is a subset of the sensory nervous system, which also includes the visual, auditory, olfactory, gustatory...

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Sensory processing

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Sensory processing is the process that organizes and distinguishes sensation (sensory information) from one's own body and the environment, thus making...

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Postcentral gyrus

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main sensory receptive area for the sense of touch. Like other sensory areas, there is a map of sensory space in this location, called the sensory homunculus...

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Sensory stimulation therapy

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Sensory stimulation therapy (SST) is an experimental therapy that aims to use neural plasticity mechanisms to aid in the recovery of somatosensory function...

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Neuroethology

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neuroscience as a whole, such as lateral inhibition, coincidence detection, and sensory maps. The discipline of neuroethology has also discovered and explained the...

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Cerebral cortex

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The organization of sensory maps in the cortex reflects that of the corresponding sensing organ, in what is known as a topographic map. Neighboring points...

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Cortical remapping

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that the sensory or motor maps were topographical; areas of the body adjacent to one another would likely be adjacent on the cortical maps. Due to Penfield's...

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Sensory cue

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In perceptual psychology, a sensory cue is a statistic or signal that can be extracted from the sensory input by a perceiver, that indicates the state...

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Michael Merzenich

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emeritus at the University of California, San Francisco. He took the sensory cortex maps developed by his predecessors (Archie Tunturi, Clinton Woolsey, Vernon...

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Cortical map

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(texture maps, color maps, contour maps, etc.). Cortical organization, especially for the sensory systems, is often described in terms of maps. For example...

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Development of the nervous system

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thought to instruct the formation of two sensory maps- the retinotopic map and eye-specific segregation. Retinotopic map refinement occurs in downstream visual...

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Sensory systems in fish

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form somatotopic maps within the brain informing the fish of amplitude and direction of flow at different points along the body. These maps are located in...

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Sensory substitution

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Sensory substitution is a change of the characteristics of one sensory modality into stimuli of another sensory modality. A sensory substitution system...

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Neurocomputational speech processing

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the sensory and motor maps (as introduced above) are distributed representations (Hinton et al. 1968): Each neuron within the sensory or motor map is more...

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Orthogonality

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neuroscience, a sensory map in the brain which has overlapping stimulus coding (e.g. location and quality) is called an orthogonal map. In philosophy,...

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Anatomy of the cerebellum

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order is preserved in the olivocerebellar tract projections onto the ‘body maps’ in the contralateral cerebellar cortex. Under resting conditions in animal...

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Claustrum

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finds". UPI. Retrieved 27 April 2022. Olson CR, Graybiel AM (1980). "Sensory maps in the claustrum of the cat". Nature. 288 (5790): 479–481. Bibcode:1980Natur...

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Stimulus modality

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Stimulus modality, also called sensory modality, is one aspect of a stimulus or what is perceived after a stimulus. For example, the temperature modality...

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Spinal cord

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Likewise, sensory nerve rootlets form off right and left dorsal lateral sulci and form sensory nerve roots. The ventral (motor) and dorsal (sensory) roots...

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