Editing Agnosia (section)

===Visual agnosia===
[[Visual agnosia]] is a broad category that refers to a deficiency in the ability to recognize visual objects. Visual agnosia can be further subdivided into two different subtypes: [[apperceptive agnosia|apperceptive visual agnosia]] and [[associative visual agnosia]].<ref name="Cognitive Psychology">{{cite book|last=Galotti]|first=Kathleen M.|title=Cognitive psychology : in and out of the laboratory|year=2010|publisher=Nelson|location=Canada|isbn=978-0-17-644065-7|edition=1st Canadian }}</ref>

Individuals with apperceptive visual agnosia display the ability to see contours and outlines when shown an object, but they experience difficulty if asked to categorize objects. Apperceptive visual agnosia is associated with damage to one hemisphere, specifically damage to the posterior sections of the right hemisphere.<ref name="Cognitive Psychology" />

In contrast, individuals with associative visual agnosia experience difficulty when asked to name objects. Associative agnosia is associated with damage to both the right and left hemispheres at the occipitotemporal border.<ref name="Cognitive Psychology" />  A specific form of associative visual agnosia is known as prosopagnosia.  [[Prosopagnosia]] is the inability to recognize faces.  For example, these individuals have difficulty recognizing friends, family and coworkers.<ref name="Cognitive Psychology" /> However, individuals with prosopagnosia can recognize all other types of visual stimuli.<ref>{{cite book|last1=Silverman|first2=Jay |last2=Friedenberg |first1=Gordon|title=Cognitive science : an introduction to the study of mind|publisher=SAGE|location=Thousand Oaks, Calif.|isbn=978-1-4129-7761-6|edition=2nd |date=2011-07-14}}</ref>