PSY 1001 Lecture 1: Review for exam 2

• School: University of Iowa
• Department: Psychology
• Course: PSY 1001
• Professor: Amy Poremba

Document Summary

Sensation: the physical thing in the environment. Perception: understanding/ brain process of the sensation. Perception object we see: hearing. Perception sound (bird tweeting: touch. Perception poke, touch, etc: smell. Sensation chemicals in the air: taste. Transduction: transfer of info to brain through neurons. Absolute threshold: minimum stimulus needed for perception 50% of time. Just noticeable difference: smallest amount of stimulus needed to detect change in stimulus. Weber"s law: related to just noticeable difference, the more intense the stimulus, the bigger the change needs to be for detection, ex: if you have a 1-ounce weight and a 2-ounce weight, you could tell the difference. If you have a 10-ounce weight and a 12-ounce weight you couldn"t tell the difference. Gnostic cells: take shape, coloring, location and tell you what something is. Simple cells: detect orientation and specific location. Complex cells: detect orientation, less location dependent. Allows light in, can adjust to different amounts of light.