| Front | Rods |
|---|---|
| Back | Found mainly in peripheral parts of retina Rods only give information in black and white (monochromatic form) Rods are very sensitive to light (fire action potentials in dim light) Many rods join one neurone so many weak generator potentials combine to reach the threshold and trigger the action potential Rods give low visual acuity because many rods join the same neurone, which means light from too points close together can't be told apart |
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