General
The "what" and "how" of vision are also described as these.
What are perception and action?
In Pohl's lesion study with rhesus monkeys, this type of lesion disrupted the dorsal pathway.
What is a parietal lesion?
Patient DF had this cognitive impairment which made her unable to identify objects based on their shape.
What is visual form agnosia?
This perceptual impairment involves a facial recognition deficit.
What is prosopagnosia?
What is the dorsal stream?
What is the centre optic chiasm?
We can measure reaching and grasping using an infrared tracking device called this.
What is an Optotrak?
Patient DF had severe damage to this stream.
What is the ventral stream?
In Pohl's lesion study with rhesus monkeys, this lesion disrupted the ventral pathway.
What is a temporal lesion?
Patient RV can only independently estimate size and shape, but can't apply that information to action. When approaching a block, she would do this until she touched the block.
What is open her hand as wide as possible?
According to Ungerleider and Mishkin's what vs where model, the ventral pathway is responsible for this (the what) and the dorsal pathway is responsible fo this (the where).
What are object recognition and object localization?
What is optic ataxia?
What is manual estimation?
While the dorsal stream is involved in grasp aperture and stability, the ventral stream uses this.
What is object recognition?
During the slot task, patient RV struggled with this, but could provide scaled estimates of the block's size.
What is grasping the block?
While the geniculostriate pathway is the primary visual pathway, there may be secondary pathways responsible for this.
What is blindsight?
In order to calibrate actions directed at an object, the dorsal stream needs to know these three things.
What are location, size, and shape?
In the slot task, patient DF had trouble with this portion of the task, but success with this.
What are matching the slot's orientation and placing the rectangle into the slot?
This is an impairment in matching and copying.
What is apperceptive agnosia?
In the blake shapes task, patient RV performed poorly and would do this.
What is grasp the shape at unstable points?
According to Goodale and Milner's model, both streams process information about an object's structure and spatial location, but the ventral stream is responsible for this and the dorsal, this.
What are vision-for-perception and vision-for-action?
This test can pose a great challenge for the dorsal stream if it only processes simple size information.
What is the blake shapes test?
Patient DF performed ___ on the blake shapes task.
What is successfully?
The ventral stream begins with the striate cortex and ends here.
What is the inferior temporal cortex?
Patient RV had no trouble doing this, unlike patient DF who could pick up objects but struggle with RV's strength.
What is discriminating objects?