Chapter 3: More Brain Stuff Flashcards
The brain is _____ in structure but ____ in Function
Symmetrical and Lateralized
What does a Symmetrical Brain mean?
The Brain has coressponding structures on both the left and right side.
What does Laterlized Brain mean?
Some specfic functions are only located on one side of the brain
- Left: Language
- Right: Movement
What is the Corpus Callosum?
The bridge of fibers that connects the two halves of the brain
Allows each side of the brain to communicate
What does a Contralateral Brain mean?
The Specific side of the brain controls the opposite side of the body
Ex: Left Hemisphere controls Right hand and Vice Versa
What is Psychophysics?
The Study of the relationship between physical stimuli and subjective sensations
Who invented PsychoPhysics?
Gustav Fechner
Who is Gustav Fechner?
Inventor of psychophysics
What is Absolute Threshold?
The Minimum intensity required for a stimulus to be detected?
What are three ways to measure absloute Threshold?
The Method of Limits
The Method of constant Stimuli
The MEthod of Adjustment
What is the Method of Limits?
Stimulus is gradually Increased/decreased till the participant responds
Ex: slowly increase sound until it can be heard
What is the method of constant stimuli?
A Fixed Set of stimuli that is presented randomly.
Ex: Random noises and you tell me which ones the quietest
What is The Method of Adjustment
Participants adjust the stimulus intesnity themselves
Ex: sound is turned down until no one can hear it
What is Just noticeable Difference?
The Minimum Detectable Difference between Two stimulus
What is Webers Law?
A small change in a big sample is unnoticeable but a big change in a small sample is noticeable
Ex: A drop of perfume in a room
and One more drop of perfume in a bathtub of perfume
What is the Difference Between Sensation and Perception?
Sensation is how you respond to environmental stimulus (HOW YOU FEEL)
Perception is how you organize and intepret the sensory information ( HOW YOU THINK)
What is Gestalt Psychology?
The whole (perception) is more than the sum of the parts (sensations)
Ex: Music (You can hear music but you have to think about it to perceive it)
What are some principles of Gestalt Psychology and how we organize information?
Proximity
Similarity
Good Contiuation
Closure
Common Fate
What is the difference between these three terms for the brain?
- Contralateral
- Symmetrical
- Lateralized
Contralateral - opposite side of the brain controls different sides.
Symmetrical - Brain has Symmetrical Structures and is even.
Lateralized - The two sides of the brain have different functions
