Sensation and Perception Flashcards
Sensation
The physical process of environmental stimuli by the sense organs
Perception
The psychological process of interpreting sensory info
Transduction
The conversion of one form of energy into another
Absolute Threshold
The smallest amount of stimulation needed for detection by a sense
Signal Detection
Method for studying the ability to correctly identify sensory stimuli
Differential Threshold
The smallest difference needed in order to differentiate two stimuli
Bottom-Up Processing
When we build up perception from the individual pieces
Top-Down Processing
Stimuli we’ve experienced in the past will influence how we process new ones
Sensory Adaptation
Decrease in sensitivity of a receptor to a stimulus after constant stimulation
Binocular Disparity
Difference in images processed by the left and right eyes
Rods
Photoreceptors of the retina sensitive to low levels of light
Cones
Photoreceptors of the retina sensitive to color
Agnosia
Loss of the ability to perceive stimuli
Prosopagnosia
The inability to recognize faces
Vestibular System
Parts of the inner eat involved in balance
Tactile Sensation
Different receptors in our skin gather info about the environment
Somatosensory Cortex
Area of the cortex involved in processing somatosensory stimuli
Somatosensory
A sensation that can occur anywhere in the body
Somatosensation
Ability to sense touch, pain, and temperature
Phantom Limb Pain
Pain in a limb that no longer exists
Multimodal Perception
The effects that concurrent stimulation in more than one sensory modality has on the perception of events and objects in the world
