• General Definition

Apperceptive Agnosia

Associative Agnosia

Prosopagnosia

Mirror Agnosia

Treatment

References  

ASSOCIATIVE AGNOSIA

• People with associative agnosia can correctly perceive objects presented visually, and therefore successfully perform basic tasks that those with apperceptive agnosia fail, but cannot assign meaning to visual stimuli. 

• Can be caused by left occipital and temporal lobe lesion, often in conjunction with damage to the posterior thalamus and limbic cortex.

• Patients with associative agnosia cannot associate visually-presented objects with their semantic meaning, or organize objects into semantic categories.

• It has become apparent that the boundaries of associative and apperceptive agnosia are not nearly as clear as once was thought, and that the distinction between these two disorders is a matter of degree rather than an absolute.