Lecture 9 - Visual System - Quiz 1/2 Flashcards
Which area participates to saccadic eye movement?
Superior colliculus
Which thalamic nucleus receives projections from the retina?
Lateral geniculate nucleus
Where do half of the retinal ganglion cell axons cross before projecting to the contralateral thalamic nucleus?
The optic chiasm
T/F - The primary visual cortex processes both dorsal ant ventral stream information
True
T/F - The primary visual cortex is located on the upper and lower banks of the calcarine fissure
True
T/F - The right visual field projects to the visual cortex in the left hemisphere
True
T/F - The upper visual field projects to the visual cortex in the inferior aspects of the calcarine fissure
Grue
What types of information does the dorsal stream primarily process?
Location and motion
What types of information does the ventral stream primarily process?
Color and shape
Which neural structure is the first stage of visual information processing?
Retina
What are the properties of Parvo cells?
Color sensitive, cones, small receptive fields, form
What does the class of retinal ganglion cells distinct from Magno and Parvo cells process?
Intensity
T/F - Magno cells feed through the lateral geniculate nucleus of the thalamus (LGN) into the dorsal stream
True
T/F - Magno cells have large receptive fields
True
T/F - Magno cells are sensitive to movement
True
T/F - Magno cells are specialized for targets in the peripheral visual field
True
T/F - Magno cells are sensitive to color
False
Do Magno cells in the retina feed through the LGN through the ventral stream or the dorsal stream?
Dorsal stream
What happens when one pupil is stimulated with light in a normal individual?
Both pupils constrict
