GBIO 151 Chapter : IMG 5116
15 Mar 2019
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What are examples of thresholds (see: 127), absolute threshold- is the lowest level of stimulation that a person can consciously detect. 50% of the time the stimulation s present: see chart for examples. A candle flame at 30 miles on a clear, dark night. Hearing the tick of a watch 20 feet away in a quiet room. One drop of perfume diffused throughout a three-bedroom apartment. 1 teaspoon of sugar in 2 gallons of water. A bee"s wing falling off o the cheek from one centimeter above: understand how the parts of the eye work to produce sight. Look at pages 131-133 for some helpful images of the eye and visual processing systems. What is accommodation": the optic nerve sends the visual information to the brain, transduction comes in whenever you are talking about cones and rods. Everything looks the same in shades of gray: dichromatic color blindness- having one cone that does not work properly.
