Unit 2a: Cognition Flashcards
Perception
the way we construct our representations of the external world
select , organize , and interpret our sensations.
Bottom Up Processing
taking sensory information and assembling it .
Top Down processing
using models, ideas, and expectations to interpret sensory information.
perceptual Set
mental predisposition to percieve things in a particular way based on expectations, expreiences, or context.
perceptual set and top down processing combination
You have a perceptual set about something and use top-down processing to understand your perceptions.
Gestalt Psychology
= entirety
- studies how the mind intergrates and organizes sensory information into meanginful entirely.
- Three Principle: Closure, Figure and Ground, Grouping
- you don’t see the ears, nose, and fur, but instead you see the dog.
Closure (Gestalt)
- individuals tend to perceive incomplete objects as complete.
- If you see a circle that’s not all the way round, your brain thinks, “That’s a circle!” and fills in the missing part.
Figure and Ground (Gestalt)
- the way people distinguish an object( the figure) from its background (the ground).
- Imagine when you see a toy car on the floor. Your brain focuses on the car and not on the carpet around it.
Grouping
- objects are grouped together due to proximity and similiarity.
- If you have a bunch of red blocks and a bunch of blue blocks, your brain likes to put the red blocks together and the blue blocks together.
Selective Attention
ability to focus on a specific stimulus or task while ignoring other distractions.
Cocktail Party Effect
focus on one convo amidst a noisy environment, while still being able to detect relevant information.
Intentional Blindness
individuals fail to notice unexpected or conspicious stimuli in their visual field becasue their attention is focused somehwere.
Perceptual Constancy
we tend to recognize objects as being constant and unchanging despite variations in the sensory input.
- size
- shape
- color
- brightness
Depth Perception
Enables us to visually judge distance
Depth Cues
visual info that allows us to percieve depth/distance.
Binocular Depth Cues
require both eyes
monocular depth cues
only require one eye
Binocular (Retinal Disparity)
differnet images from each eye are combined to give a sense of depth and dimension
Binocular (Convergence)
amount of inward movement of eyes signals how close an object is.
Monocular (Relative Size)
objects that appear larger are perceived as being closer
Monocular (Relative Clarity)
objects that are clearer and more detailed are presumed as being closer.
Monocular (Texture Gradient)
the texture of a surface becomes less distinct and more compressed as it recedes into distance
Monocular (Linear Perspective)
parallel lines seem to be coverging as they recede into distane
- vanishing point drawings
Monocular (Interpositon)
an object that partially covers or overlaps another object is presumed to be closer to the observer.
Apparent Movement
perception of movement in stationery object.