Retinal Projections Flashcards
Later Geniculate Nucleus
Axons that project to the lateral geniculate nuclei (LGN) transfer
their input to the visual cortex where vision is perceived
Hypothalamus
regulation of circadian rythms
Pretectum
reflex control of pupil and lens
superior colliculus
orienting the movement of head and eyes
LGN Layers 1, 4, 6
contralateral eye
LGN Layers 2,3, 5
ipsilateral eye
P- cells
streams into LGN
small receptor field- color
M- cells
stream into LGN
Large receptive field- motion
anopsia
loss of one or more quadrants of a visual field.
Hemianopsia
of half a visual field
Quadrantanopsia
loss of one quarter of a visual field
Homonymous
condition in which the visual field losses are similar for both eyes.
Heteronymous
condition in which the two eyes have nonoverlapping field losses.