Week 6 lecture 1- differentiating disorders

Question 1

Characteristics of PCA

Answer 1

› Onset age 55-65
› Gradual onset and decline
› In early stages mainly higher order visual perception disorders
› Intact awareness and understanding of the decline
› In later stages often also
 Clothing apraxia
 Word finding problems
 Memory problems
› language and communication difficulties
 secondary features of PCA

Question 2

visual perception disorders common in PCA

Answer 2

› Visual spatial disorders
› Alexia
› Neglect
› Visual agnosia
› Prosopagnosia
› Balint’s syndrome