PSY 100 Lecture Notes - Lecture 22: Gustav Fechner, Absolute Threshold, Psychophysics
Document Summary
Sensation - detection of a stimulus via a sensory system. Perception - the cognitive/psychological interpretation of a sensation. Involves what you do with the information you sense. The distinction between sensing and perceiving is an important one (some things you. Transduction - the process of converting energy from one form to another. Stimulus energy -> sensory receptors -> neural impulses -> brain. Psychophysics - the study of the relationship between stimuli and the sensations and perceptions they awoke. When we are exposed to a stimulus repeatedly, the nerve cells fire less frequently. Wavelength - the distance between two peaks. Cornea stands as the first line of defense for the eye. Pupil is a space that light enters into. Iris (like camera lens) adjusts the opening of the pupil for light.
