Visual input

what are the three types of eye movement

smooth pursuit, vergence, saccaidic

what does retina actually detect

differences in light intensity

what are the two types of cells found in the retina

rods, cones

what is the name of the cells that rods and cones synapse to

bipolar cells

what cells do bipolar cells synapse onto

ganglionic

what cell has the highest concentration in the fovea

cones

which cells are used for colour vision

cones

how many types of opsins do cone cells have

3

what is the name of the G-protein linked to opsins

transducin

what enzyme does the alpha subunit of transducin bind to

PDE

does cGMP cause the cation channels to stay open or shut

stay open

What happens to both rods and cones when exposed to light

hyperpolarization

are rods fast or slow onset

slow

are cones fast or slow onset

fast

what cells control the on and off pathways in retina

bipolar cells

In cones, what does increased light intensity ,in the ON pathway, do to the frequency of action potentials

increases

In cones, what does increased light intensity, in the OFF pathway, do to the frequency of action potentials

decreases

what type of receptors are found on the post synaptic membrane of the ON PATHWAY cone-bipolar cell synapse

mGluR6

what type of receptors are mGluR6

inhibitory

what type of receptors are found on the post synaptic membrane of the OFF PATHWAY cone-bipolar cell synapse

AMPA

what type of receptors are AMPA receptors

excitatory

what cells help rod pathways transmit signals to ganglion cells

amacrine

how do amacrine cells transmit the ON pathway rod signals

gap junctions

how do amacrine cells transmit the OFF pathway rod signals

glycine