Difference between revisions of "W3 Cell"

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(Created page with "Intro Until relatively recently, it was thought that the receptive fields of retinal ganglion cells were one of two center-surround receptive field types (either OFF-center, ...")
 
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Until relatively recently, it was thought that the receptive fields of retinal ganglion cells were one of two center-surround receptive field types (either OFF-center, ON-surround or ON-center, OFF-surround). However, recently, it has been found that the retina has many different types of retinal ganglion cells, each with a distinctive receptive field. Together, the receptive fields of these different cell types form an array that allows individuals to perceive the entire visual field. Some cells respond only to object in particular orientations, while others respond only to objects moving in a specific direction. One example of such a cell is the W3 retinal ganglion cell, which has been identified in mice. W3 is considered the equivalent to the object motion selective ganglion cell (OMS) in salamanders. Because relatively little work has been done specifically on W3 and a fair amount has been done regarding connections and properties of OMS, some of the information in the article will be about OMS.  
 
Until relatively recently, it was thought that the receptive fields of retinal ganglion cells were one of two center-surround receptive field types (either OFF-center, ON-surround or ON-center, OFF-surround). However, recently, it has been found that the retina has many different types of retinal ganglion cells, each with a distinctive receptive field. Together, the receptive fields of these different cell types form an array that allows individuals to perceive the entire visual field. Some cells respond only to object in particular orientations, while others respond only to objects moving in a specific direction. One example of such a cell is the W3 retinal ganglion cell, which has been identified in mice. W3 is considered the equivalent to the object motion selective ganglion cell (OMS) in salamanders. Because relatively little work has been done specifically on W3 and a fair amount has been done regarding connections and properties of OMS, some of the information in the article will be about OMS.  
OMS and W3 respond sensitively to differential motion between the receptive field center and surround, as produced by an object moving over the background, but are strongly suppressed by global image motion, as produced by the observer’s head or eye
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OMS and W3 respond sensitively to differential motion between the receptive field center and surround, as produced by an object moving over the background, but are strongly suppressed by global image motion, as produced by the observer’s head or eye movements.

Revision as of 16:14, 23 March 2012

Intro

Until relatively recently, it was thought that the receptive fields of retinal ganglion cells were one of two center-surround receptive field types (either OFF-center, ON-surround or ON-center, OFF-surround). However, recently, it has been found that the retina has many different types of retinal ganglion cells, each with a distinctive receptive field. Together, the receptive fields of these different cell types form an array that allows individuals to perceive the entire visual field. Some cells respond only to object in particular orientations, while others respond only to objects moving in a specific direction. One example of such a cell is the W3 retinal ganglion cell, which has been identified in mice. W3 is considered the equivalent to the object motion selective ganglion cell (OMS) in salamanders. Because relatively little work has been done specifically on W3 and a fair amount has been done regarding connections and properties of OMS, some of the information in the article will be about OMS. OMS and W3 respond sensitively to differential motion between the receptive field center and surround, as produced by an object moving over the background, but are strongly suppressed by global image motion, as produced by the observer’s head or eye movements.