Visual Agnosia is the inability to recognize visual stimuli. Visual Agnosia is not caused by damage to the sensory organs such as the eye, retina, or optic tract. Individuals who suffer from Visual Agnosia are able to see well but cannot perceive, or make sense of the information that they see. Visual Agnosia seems to occur when there is damage to visual processing areas of the brain such as the parietal lobe or occipital lobe. Agnosia means "loss of knowledge" in Greek, this is very fitting because it seems that patients who suffer from Agnosias lose their knowledge in a specific category.

In this video the participant has trouble identifying common objects shown to him.

There are many types of Visual Agnosias which include: Inability to recognize specific object categories (living things, people, fruits, vegetables, tools, electronics, etc.), Inability to recognize faces (Prosopagnosia), Inability to recognize color (Achromatopsia).

This information about Visual Agnosias provides a lot of information to Cognitive Psychologists. Loss of visual perception of specific categories shows us that there are specific brain regions related to processing of these categories.

8 responses to "Visual Agnosia, Inability to Recognize Categories (Cognitive Psychology)"

  1. Interesting writings as always man. I definitely do learn a lot from this stuff about psychology

  2. 5:35 sooooo funny!

  3. That makes me sad to think there are people out there who are suffering from this. Thnaks, though! Interesting read like always!

  4. interesting

  5. Awesome blog, tons of good stuff here. Following!

  6. hot dang. If I ever got to the point of not recognizing things by sight I will no longer be a happy man. without vision life would be very very lame!

  7. It's scary really and hard to believe but it's true. Amazing how the brain works.

  8. Sounds horrible, interesting though.

Post a Comment