Visual Disorders and Illusions

Start with visual agnosia

The Visual Agnosias mind map is a starting point for studying difficulty with object recognition. It describes visual agnosia as a deficit in object recognition and refers to damage in extrastriate areas while V1 remains intact. The Visual Agnosias flashcards ask what agnosia is, what is impaired in visual agnosia and what remains intact.

Begin with the mind map to organize the terms, then use the flashcards to practice explaining them. The quiz on the ventral visual stream and visual agnosia offers questions to work through afterward.

Study visual pathways and disorders

The Visual disorders flashcards ask about the geniculostriate pathway, the optic nerve and visual field defects. They also include questions about how light enters the eye and what the pupil does to reduce light. These questions provide a way to practice the terms alongside the resources on disorders.

The clinical neuropsychology quiz includes a question about damage to the optic nerve before the optic chiasm. Another quiz asks learners to label parts of the visual pathways. For a different view, the mind map on visual perception and perceptual disorders includes rods and cones in its visual processing material.

Compare resources on illusions

The Illusions notes introduce the Hermann and Hering grids and the scintillating grid. They mention receptive fields as a possible explanation for a grid illusion while noting that this may not be the whole story. The Illusions & Disorders of Vision mind map also brings together material on disorders of vision and blindsight.

Use the collection within the unit

Visual Disorders and Illusions is a section of The Visual System unit in Neuroscience. The pathway questions, disorder flashcards and mind maps offer different ways to study material within that section. A map can help you organize concepts before you use a quiz to see which questions need another look.

Choose a map and a quiz to use together as you study the section.