Explain how the human eye has both high sensitivity and high acuity.

The human eye has high sensitivity because many rods connect to a singular neurone, so many weak generator potentials combine to reach the threshold and trigger an action potential. The human eye has a high acuity because cones are close together and one cone joins one neurone. When light from two points hits two cones, action potentials from each cone go to the brain, meaning you can distinguish two points that are close together as two separate points.