Sensation and Perception Flashcards
Sensation
sensory receptors and nervous system receive and represent stimuli from our environment
Perception
brain organizes and interprets sensory information, making meaning from sensations
The Senses
Receive sensory stimulation, transform sensory stimulation into neural impulses, and deliver neural information to the brain.
Top-down processing
deliberate and intentional
Bottom-up processing
Transduction
conversion of one form of energy to another
Absolute Threshold
minimum stimulus energy needed to detect a particular stimulus
difference threshold or Just Noticeable Difference (JND)
Minimum difference that a person can detect between any two stimuli
Weber’s Law
the JND is relative to the initial strength of the stimulus
Subliminal Stimulus
below the absolute threshold (too fleeting to enable
(Sublimiinal persuation msy produce a fleeting and sbtile enut not pwerful or enduring effect on behavior
Sensory Adaption
Diminished sensitivity due to constant stimulation
(not noticing the sound of a fan until it turns off)
Perceptual Set
Mental predisposition to perceive something over another
Schemas
- The mental way we group information.
- Organize and interpret unfamiliar information through experience.
Context Effects
The influence of environmental factors on one’s PERCEPTION of a stimulus ( top-down )