the retina Flashcards
What are the 2 types of photoreceptor
rods and cones
What do rod cells do
Detect light accord the middle of the visible light spectrum
What are rod cells more sensitive to
Low light intensities
What protein pigment do rod cells use to detect light
Rhodopsin
What protein pigment do cone cells use to detect light
Iodopsin
How many types of cones cell are there and why do we need multiple
3 types that detect different colours (red cones, blue cones, green cones). They absorb different amounts of red green and blue light
How does the brain perceive colour vision
By analysing how much red, green and blue light there is
What are cone cells more sensitive to
High light intensity
How many types of rod cell are there
1
What vision do rod cells have
Black and white
Where do photoreceptors pass their signal too
Bipolar cells
Cone cells tend to have what attached
their own bipolar cell
Do one or multiple rod cells connect to a single bipolar cell
Multiple
Why do multiple rod cells attach to a single bipolar cell
As it allows many low level signals to be pooled into a single signal
What benefit is there for multiple rod cells attaching to a single bipolar cell
Improves the accuracy of rod cells in low level light
