PSY 1001H Study Guide - Midterm Guide: Necker Cube, Detection Theory, Visual Acuity
Document Summary
Sensation & perception will be included on the first progress check on sept 30. Detection of physical energy by sense organs, which then send info to brain (pick up) Process of converting energy or substance into electrical activity within neurons, like light or sound. Brain"s interpretation of raw sensory inputs (make meaning) Image perceivable in 2 ways (ex: vase or faces?) Sensation does not change, but perception must shift to view both images. How we perceive sensory stimuli based on physical characteristics. Lowest level of a stimulus needed for the nervous system to detect a change 50% of time. Smallest change in intensity of stimulus we can detect. Proportional relationship between jnd and original stimulus intensity (ex: stronger the stimulus, bigger change needed to be noticeable) Part of visual field we cannot see because absence of rods and cones. Chemicals that change following exposure to light in receptor cells. Time in dark before rods regain max light sensitivity.
