Sensation and Perception Flashcards
Sensation
Detection of physical energy by sense organs
Perception
Interpretation of sensory inputs
Sensation is ___ ___ processing
Bottom-up
Physical energy - sense - brain
Perception ___ ___ processing
Top-down
stored knowledge - brain
Transduction
Process of converting external energy into neural activity
Sense receptors
Specific nerve energies
we “see” because our visual sense receptors have been stimulated
sometimes people can be trained to see with other organs
Paul Bach-y-Rita
Studied neuroplasticity
Sensory Substitution
BrainPort technology
Synesthesia
Stimulation of one sensory pathway leads to automatic involuntary experiences in another pathway
Grapheme - colour synthesia
Grapheme colour synesthete
Automatic, involuntary experience in another pathway
P to R
Psychophysics
Physical stimuli and the concious experience of them
Thresholds
Absolute - minimum level
Just noticeable difference - smallest change