Psych Chapter 4B
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What is sensation?
taking in info from the outside world
info goes to brain and gets intrepreted
process of taking raw sensations from the environment and interpret them, using knowledge, experience, and understanding of the world, so that the sensations become meaningful experiences
What are the three approaches to perception?
computations by the nervous system translate raw sensory stimulation into an experience of reality
Brain is a machine
tries to determine the computations that a machine/ computer would have to perform to solve perceptual problems and tehn applies it to the NS
take different experiences and build them one on top of another
fargments of sensory info construct an image of reality
emphasizes the knowledge-based inferential aspects of perception
past experiences and knowledge, including culture, create expectations of what you will see or hear
we're good at adapting to environment because you can analyze very quickly
filtering out and attending only to important sensory messages
1) What is attention?
2) What are the types?
1) the process of directing and focusing psychological resources to enhance perception, performance, and mental experience
- 2) overt (focusing on an idea; deliberate movement)
- covert (shifting attention without moving)
Types of selective attention?
voluntary: goal-directed; purposely focus
involuntary: stimulus-driven; something captures attention
allows us to focus on stimuli occurring in one part of the environment while ignoring stimuli in other parts
Divided attention occurs when you __
The __: multitasking
simultaneously devote mental resources to more than one thing
Stroop Effect/ Task
Dichotic listening task
occurs when different messages are played into each ear
a skill that allows one to divide attention to do more than one thing at a time
the figure are what is being focused on, while the ground is the background
they have no ability to be separated
Depth position is what?
the ability to perceive three dimensional space and to accurately judge distance
Depth perception is dependent on what?
interposition: blocking something else
relative size: the bigger the object, the closer
height in visual field: the further up, the more distant
texture gradient: change in texture
clarity, color, and shadow
tests depth perception in infants
information processing that begins "at the bottom" with raw sensory data that feed "up" to the brain
specific, detailed info--> assembled as a whole
information starts at the top (make decisions based on prior experiences and knowledge)
decision made on prioer knowledge
Both __ and __ lead to perception.
What would you like to do?
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