PSY 1101 Lecture Notes - Lecture 4: Taste Bud, Color Blindness, Visual Cortex

• School: University of Ottawa
• Department: Psychology
• Course: PSY 1101
• Professor: Brenda Baird

Document Summary

Transduction: process by which sensory receptors convert energy into neutral impulses. Sensory receptors detect and respond to various stimuli (modality specific) The difference between not being able to perceive a stimulus and being able to just barely perceive it. The minimum amount of sensory stimulation that can be detected 50% of the time. Vision: a single candle flame from 30 miles on a dark, clear night. Hearing: the tick of a watch from 20 feet in total quiet. Smell: 1 drop of perfume in a 6-room apartment. Touch: the wing of a bee on your cheek, dropped from 1 cm. Taste: 1 tsp. sugar in 2 gal. water. A psychophysical theory that divides the detection of a sensory signal into a sensory process and a decision process. The ability to detect the smallest increase or decrease in a physical stimulus that is required to produce the just noticeable difference (jnd) in sensation that is detectable 50% of the time.