Agnosia
Which visual processing pathway is primarily responsible for object recognition?
The ventral stream (What pathway)
The occipital lobe is located behind this lobe of the brain
Parietal lobe
What deficit is the result of damage done to the retina or optic nerve in only one eye?
Monocular Blindness
Which maps are based on anatomy and connections, monkeys or humans?
Monkey
After experiencing immense cortical damage to the posterior area of the brain, Patient P.B was left blind but able to accurately identify the color of objects without visibly seeing them. What is Patient P.B able to demonstrate?
Colour Perception
Which type of agnosia would cause an individual to be unable to recognize familiar faces or their own face in a mirror?
Prosopagnosia
The occipital lobe houses this cortical region responsible for the initial processing of visual information
V1, Primary Visual Cortex
Which region in the visual field do lesions not affect in the occipital lobe?
The central/macular region
Which maps are heavily based on noninvasive techniques such as fMRI
Human
After bilateral posterior brain damage, L.M. had the ability to see colours, recognize objects, and read normally. However L.M. could not perceive motion. While pouring tea the liquid appeared to be frozen and when L.M was in a room full of people they all seemed to appear in different locations.
Which brain region is likely damaged? OR what visual disorder does patient L.M have?
Area V5 (Middle Temporal Area)
Motion Blindness
A patient can confidently copy a drawing of an object however they cannot identify the object. What type of Agnosia is this?
Associative Agnosia
This larger groove on the medial surface of the occipital lobe divides the primary visual cortex into upper and lower regions
the Calcarine Sulcus
What do lesions in the occipital lobe produce that are often known as “blind spots”?
Scotomas
Between humans and monkeys, which species has more visual processing capacity?
Humans
After suffering a stroke, Patient D. reports not being able to recognize the faces of her parents, husband, or even her own face in the mirror. Upon examination, a lesion on her right occipitotemporal region was identified.
Prosopagnosia
A number of patients with apperceptive agnosia have difficulty perceiving more than one object at a time. This symptom is known as what?
Simulantagnosia
What is another name for the visual cortex that comes from its distinctive striped appearance?
What is the Striate Cortex
What deficit emerges from a tumor growing in the pituitary gland resulting in the loss of lateral vision?
Bitemporal Hemianopia
In which species, between humans and monkeys, does the occipito-parietal (dorsal) stream take part in vision for action, flowing from area V1 to the posterior parietal visual areas?
Both!
D.F is a 35 y/o woman who has recently been exposed to carbon monoxide poisoning. She can see normally and move around, but she cannot recognize simple line drawings of objects. However, when she is asked to place a card into a slot that can rotate to different angles, she accurately adjusts her hand and inserts the card correctly. What visual disorder does she most likely have?
Visual Agnosia