PSY 101 Lecture Notes - Lecture 1: Absolute Threshold, Taste, Mental Image
Document Summary
Psy 101 - lecture 7 - sensation and perception part 1. The process by which sensory organs in the eyes, ears, nose, mouth, skin and other tissues receive, and detect stimuli. Psychophysics: the study of the relationships between the physical characteristics of stimuli, such as their intensity, and our psychological experience of them. Absolute threshold: the minimum stimulation needed to detect a particular stimulus 50% of the time. Example of taste: 1 teaspoon of sugar in 2 gallons of water. Jnds from zero (when you notice a change from zero) Just noticeable difference (jnd): the minimum difference between two stimuli required for detection 50% of the time. Change from something to more or less of that something. Weber"s law: jnds are proportional to the size of the original stimulus. The organization and interpretation of sensory stimuli by the brain. Specific receptor cells for each sense that stimulate neurons in the cns.
