How can a person with associative visual agnosia be differentiated from a person with optic aphasia?
a) Both disorders are unable to correctly copy a drawing, but only persons with optic aphasia are able to realize that they are showing poor performance.
b) Those with associative visual agnosia may also show difficulties in recognizing colour but a person with optic aphasia never has these difficulties.
c) Those with associative visual agnosia usually cannot correctly mimic the use of the object, whereas those who exhibit optic aphasia usually can pantomime the object's use, despite their inability to name it.
d) Those with associative visual agnosia can correctly name musical instruments whereas those with optic aphasia cannot.
e) Optic aphasia is a result of damage to the primary visual cortex whereas associative visual agnosia can occur from damage to a variety of different regions.
Question 2
Which of the following statements regarding the visual pathway is true?
a) complex.
b) V4 is, in a sense, the gateway to the higher cortical areas.
c) The left lateral geniculate nucleus sends axons to the right V1, whereas the right lateral geniculate nucleus sends axons to the left V1.
d) The middle temporal region sends its projections dorsally to the parietal lobe.
e) The V1 complex sends its projections ventrally to the temporal lobe
Photograph of a person with a cataract in the right eye.
Optic canal
The Primary Visual Pathway
Assessment of Aphasia
Diagram Showing How Conduction Aphasia is Caused
Right and Left Visual Fields