imported>Neils51: spelling - it's->its, typo(s) fixed: a overt → an overt

2020-02-12T11:37:51Z

spelling - it's->its, typo(s) fixed: a overt → an overt

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The brain pathway that orients visual attention to a stimulus is referred to as the '''orienting system'''. There are two main types of visual orientations, ''covert (exogenous)'' which occurs when a salient environmental change causes a shift in attention and ''overt (endogenous)'' which occurs when the individual makes a conscious decision to orient attention to a stimuli<ref name=":0">{{Cite book|title=The Psychology of Attention|last=Styles|first=Elizabeth|publisher=Psychology Press|year=1997|isbn=0-86377-464-4|location=United Kingdom|pages=61–85}}</ref> During a covert orientation of attention, the individual does not physically move, and during an overt orientation of attention the individual's eyes and head physically move in the direction of the stimulus.<ref name=":1">{{Cite book|title=Orienting of attention|last=Wright, Richard D., 1956-|date=2008|publisher=Oxford University Press|others=Ward, Lawrence M.|isbn=978-0198029977|location=Oxford|oclc=258378419}}</ref><ref name=":0" /><ref name=":2">{{Cite book|title=The Oxford handbook of attention|others=Nobre, Kia,, Kastner, Sabine|isbn=9780199675111|location=Oxford|oclc=869726275|year = 2014}}</ref>

Information acquired through covert and overt visual orientations travels through the [[norepinephrine system]], indirectly effecting the [[ventral visual pathway]].<ref name=":2" /> The four specific brain regions involved in this process are the [[Frontal eye fields|frontal eye field]], the [[temporoparietal junction]], the [[Pulvinar nuclei|pulvinar]], and the [[superior colliculus]].<ref name=":2" /><ref name=":1" /> The [[Frontal eye fields|frontal eye field]] is involved in goal-driven eye movements and can inhibit stimulus driven eye movements.<ref name=":1" /> The [[temporoparietal junction]] appears to be involved location-cueing tasks, and individuals with lesions in this area have difficulty with [[attentional reorienting]].<ref name=":1" /> The [[Pulvinar nuclei|pulvinar]] is located posterior to the thalamus and its role in the orientating system is still being researched; however it is thought to be involved in covert orienting.<ref name=":1" /> Finally, the [[superior colliculus]] provides information about the location of the stimuli to which attention is directed.<ref name=":1" />

== References ==
<references /><br />
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[[Category:Visual system]]
[[Category:Central nervous system]]
[[Category:Attention]]

{{Neuroscience-stub}}

Orienting system - Revision history

imported>Neils51: spelling - it's->its, typo(s) fixed: a overt → an overt