Psychology sensation and perception
Terms
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- subliminal messages
- Brief auditory or visual messages that are presented below the absolute threshold
- sensation
- what occurs when a stimulus activates a receptor
- psychophysics
- The study of the relationships between sensory experiences and the physical stimuli that cause them
- perception
- The process by which individuals organize and interpret their impressions in order to give meaning to their environment.
- absolute threshold
- the weakest amount of a stimulus that a person can detect half the time
- signal-detection theory
- the study of people's tendency to make correct judgements in detecting the presence of a stimuli
- constancy
- The tendency to perceive certain objects in the same way regardless of changing angle, distance, or lighting
- extrasensory perception
- An ability to gain information by some means other that the ordinary senses
- Weber's law
- the principle that for any change in a stimulus to be detected, a constant proportion of that stimulus must be added or subtracted
- difference threshold
- The smallest difference between two stimuli that can be detected half the time.
- motion parallax
- The apparent movement of stationary objects relative to one another that occurswhen the observer changes position
- illusions
- perceptions that misrepresent physical stimuli
- Gestalt
- The experience that comes from orgainizing bits and pieces of information into meaningful wholes