Pschology mid term 2

Question Answer
Sensation simple stimulation of a sense organ
Perception (5) Organization, Identification and interpretation of a sensation in order to form a mental representation
Transduction The process that occurs when many sensors in the body convert physical signals from the environment into encoded neutral signals sent o the central nervous system.
Sensory Adaption The process whereby sensitivity to prolonged stimulation tends to decline over time as an organism adapts adapts to current conditions
Visual acuity The ability to see fine detail
What are the common principles of sensory systems? Specialized cells called receptors


Information transmission

Localization and detection

Sensory subsystems
Retina A layer of light sensitive tissue lining the back of the eyeball
Accommodation The process of how th eye maintains a clear image of the retina
Cones Photoreceptors that detect colour and focus on fine detail
Rods Photoreceptors that become active under low light conditions for night vision
Fovea An area of the retina where vision is the cleanest and there are no rods
Blind spot A spot that produces no sensation on the retina
Colour- Opponent system Theory stating that pairs of visual neurons work in opposition
Parallel processing The brain's capacity to preform multiple activities at the same time
Binding problem How the brain links features together so that we see unified objects in our visual world rather than free-floating or miscombined features
Illusory conjunction A perceptual mistake whereby the brain incorrectly combines features from multiple objects
Feature- integration theory The idea that focused attention is not required to detect the individuals features that make up a stimulus but is required to bind those individual features together.
Perceptual constancy A perceptual principle stating that even as aspects of sensory signals change, perception remains constant
Template A mental representation that can be directly compared with a viewed shape in the retinal image
monocular depth cues Aspects of a scene that yield information about depth when viewed with only one eye.
Binocular disparity The difference in the retinal images of the two eyes that provides information about depth
Apparent motion The perception of movement as a result of alternating signals appearing in rapid succession in different locations.
Change blindness Failure to detect changes to the visual details of a scene
Inattentional blindness A failure to perceive objects that are not the focus of attention