Agnosia (from ancient Greek ἀγνωσία, “ignorance”, “absence of knowledge”) is a loss of ability to recognize objects, persons, sounds, shapes, or smells while the specific sense is not defective nor is there any significant memory loss. It is usually associated with brain injury or neurological illness, particularly after damage to the occipitotemporal border, which is part of the ventral stream. Agnosia only affects a single modality, such as vision or hearing.
Donna Williams have in particular described how agnosias have effected how sensory experiences in the world and they’re apart of her Autism Fruit Salad Model (1995/2005) – and I have learned a lot from about my agnosias and sensory perceptual issues that I have through vivid and reflective descriptions.
DO ALL PEOPLE ON THE SPECTRUM HAVE AGNOSIAS?
I think to answer to this question is yes and it what cluster of agnosias the person has that will effect the way in which they process the world around them different profiles means different types of agnosias can be present , more awareness of the inter-relationship both autism and agnosias have and Donna Williams and Olga Bogdashina have certainly made crucial and proactive waves in this relationship.
Paul Isaacs 2014