Editing Attention (section)

===Hemispatial neglect===
{{Main|Hemispatial neglect}}
Hemispatial neglect, also called ''unilateral neglect'', often occurs when people have damage to the right hemisphere of their brain.<ref name="Kalat, J. W. 2013">{{cite book | vauthors = Kalat JW | date = 2013 | title = Biological Psychology | edition = 11th | publisher = Cengage Learning }}</ref> This damage often leads to a tendency to ignore the left side of one's body or even the left side of an object that can be seen. Damage to the left side of the brain (the left hemisphere) rarely yields significant neglect of the right side of the body or object in the person's local environments.<ref name="Silveri, M. 2011">{{cite journal | vauthors = Silveri MC, Ciccarelli N, Cappa A | title = Unilateral spatial neglect in degenerative brain pathology | journal = Neuropsychology | volume = 25 | issue = 5 | pages = 554–66 | date = September 2011 | pmid = 21639641 | doi = 10.1037/a0023957 }}</ref>

The effects of spatial neglect, however, may vary and differ depending on what area of the brain was damaged. Damage to different neural substrates can result in different types of neglect. Attention disorders (lateralized and nonlaterized) may also contribute to the symptoms and effects.<ref name="Silveri, M. 2011"/> Much research has asserted that damage to gray matter within the brain results in spatial neglect.<ref>{{cite journal | vauthors = Karnath HO, Rorden C, Ticini LF | title = Damage to white matter fiber tracts in acute spatial neglect | journal = Cerebral Cortex | volume = 19 | issue = 10 | pages = 2331–7 | date = October 2009 | pmid = 19168667 | pmc = 2742593 | doi = 10.1093/cercor/bhn250 }}</ref>

New technology has yielded more information, such that there is a large, distributed network of frontal, parietal, temporal, and subcortical brain areas that have been tied to neglect.<ref>{{cite journal | vauthors = Buxbaum LJ | title = On the right (and left) track: Twenty years of progress in studying hemispatial neglect | journal = Cognitive Neuropsychology | volume = 23 | issue = 1 | pages = 184–201 | year = 2006 | pmid = 21049327 | doi = 10.1080/02643290500202698 | s2cid = 27750259 }}</ref> This network can be related to other research as well; the [[dorsal attention network]] is tied to spatial orienting.<ref>{{cite journal | vauthors = Ptak R, Schnider A | title = The dorsal attention network mediates orienting toward behaviorally relevant stimuli in spatial neglect | journal = The Journal of Neuroscience | volume = 30 | issue = 38 | pages = 12557–65 | date = September 2010 | pmid = 20861361 | pmc = 6633576 | doi = 10.1523/JNEUROSCI.2722-10.2010 }}</ref> The effect of damage to this network may result in patients neglecting their left side when distracted about their right side or an object on their right side.<ref name="Kalat, J. W. 2013"/>