Unit 3 Cognition Flashcards
Selective Attention
We cannot pay attention to everything all the time, we have to select what we attend to.
Cocktail Party Effect
You focused your attention on one particular voice amidst the crazy loudness of all those other voices. Example of selection attention. Tendency to hear specific information pertaining to you when you are focusing on something else.
Inattentional Blindness
You don’t see the gorilla. When you are not selecting to apply your attention to something, you will be blind to it.
Change Blindness
When you are not applying your attention to something, you will not see a minor or obvious change.
Perceptual Set
Bias or readiness to perceive certain aspects of available sensory data and to ignore others. If you expect something, you will interpret it even if it may not be there.
Gestalt
We organize the sensory information coming into our brains. Our perception is greater than the sum of the parts actually presented to our senses.
Figure Ground
The organization of the visual field into objects that stand out from their surroundings. (Background vs. foreground).
Proximity
We groups nearby figures together.
Continuity/Similaity
We groups things based on continuous patterns and similar attributes of images.
Closure
We visually fill in the gaps to create a complete, whole object.
Depth Perception
Innate ability to see objects in 3D although images that strike the retina are 2D. Allows us to judge distance.
Visual Cliff
Experiment, fake illusion of a cliff to observe how babies would react to differences in height of ground.
Binocular Cue
Depth cues such as retinal disparity and convergence, depends on the use of two eyes. As an object becomes closer or farther, bot binocular depth cues operate to help us determine distance.
Convergence
To focus on close objects, the eyes must point inward. Muscles monitor the angle, determine depth.
Retinal Disparity
By comparing retinal images from the two eyes, the brain computes distance. Greater disparity means a closer object.
Monocular Cue
Depth cues that use one eye to give the illusion of depth on flat or 2D surfaces.
Relative Clarity
Because light from distant objects passes through more light than closer objects, we perceive hazy objects to be farther away than those that appear clear.
Relative Size
If we assume two objects are similar in size, we perceive the smaller image as farther away.
Texture Gradient
Degree to which you can see things finely pixelated. Finer detail in the front vs. the back.
Linear Perspective
Parallel lines appear to meet in the distance. The sharper the angle of convergence, the greater distance perceived.
Interposition
If one object partially blocks our view of another, we perceive it as closer.
Apparent Movement
As we move, objects that are stable appear to move.
Stroboscopic Movement
Our brain perceives a rapid series of slightly varying images as continuous movement. (Moving pictures)
Phi Phenomenon
Flashing lights create the illusion of movement.
Autokinetic Effect
Size
Perceptual Constancy
Top down process that recognizes objects without being deceived by changes in color, shape, size, lightness. Our brain keeps images constant.
Cognition
Metacognition
Concept
Prototype
Jean Piaget