Visual Cortex Flashcards
To what cortical layer to P type ganglion cells project? And what for?
Layers 3-6 for colour vision.
To what cortical layer to M type ganglion cells project? And what for?
Layers 1-2 for info about movement.
What visual fields are the fibres that cross the optic chaism responsible for?
Lateral.
To what cortical layer to inputs from the lateral geniculate nucleus go?
Layer 4
What type of lesion causes monocular blindness?
Optic Nerve Lesion
What type of lesion causes Bitemporal hemiopnia?
Optic chiasm lesion
What type of lesion causes homonymous hemianopia?
Optic radiation from lateral geniculate to cortex.
Receptive fields of these cells are from a combination of information from retinal ganglion cells that detect specific orientations of bars of light.
Simple cortical cells.
These cells are used for detecting edges.
Complex cortical cells.
Need motion to have an appropriate stimulus
Hypercomplex cortical cells.
Strabismus
Misalignment of eyes so they don’t move together.
Whats the fancy name for a “lazy eye”
Amblyopia
Which visual association areas are used for depth perception?
V2 and V3
Which visual association areas are used for motion detection?
MT
Which visual association areas are used for colour vision?
V4
