AP Psych Unit 3 Module 13
Terms in this set (14)
What is lateralization, and why is it important to the way our brains function?
Lateralization is the differing functions of the left and right hemispheres of the brain.Research over the years has shown that damage to one hemisphere or the other can produce different problems and knowing this can help predict behavior.
What is meant by the term split brain? Is it correct to refer to this condition as "having two brains"?
Split brain is a term used to describe the brain after cutting the corpus callosum. No, this is not two brains, but rather, one brain with two hemispheres that no longer communicate.
Left Hemisphere Functions
Reading, writing, speaking, arithmetic reasoning, math, and decision making.
Right Hemisphere Functions
Perceptual tasks, making inferences, perceiving/portraying emotions, modulating our speech, orchestrating our sense of self, and recognizing faces.
Why do the tasks listed above lend themselves to the myth that we are "right-" or "left-"brained?
It lends itself to the myth because there are people who are stronger in the factors listed below each respective column. Any task that is performed is not due solely to the activation of structures in only one hemisphere but is a coordinated, holistic process that includes the entire brain.
What role does the corpus callosum play in relation to the two hemispheres?
It connects the two hemispheres and relays messages between them.
Why were Gazzaniga's patients able to say the world ¨ART¨?
ART was flashed in the right visual field of the screen and was transmitted to the left hemisphere of the brain. The left hemisphere contains language centers and is able to send a signal to the motor cortex to direct the person to say "ART".
Why were Gazzaniga's patients able to point to the word ¨HE¨ with their left hand?
HE was flashed in the left visual field of the screen and was transmitted to the right hemisphere of the brain. The right hemisphere controls the motor coordination of the left side of the body and will direct the left arm to point to the word "HE".
What is the relationship between handedness and speech processing?
96% of right-handers process speech in the left hemisphere; 70% of left-handers process speech in the left hemisphere. The remainder process speech in either the right hemisphere or both hemispheres
How does split-brain research help us to understand the functions of our two brain hemispheres?
Makes it so that researchers can study the functions of each hemisphere separately.
How is cognitive neuroscience changing the way we understand mental processes?
Helps us to understand the "how" of the brain.
How does consciousness help humans survive?
It helps us act in our long-term interests by considering consequences rather than merely seeking short-term pleasure and avoiding pain.
What is dual processing? Give an example from the text of dual processing. Give an example from your own life of dual processing.
It is the principle that information is often simultaneously processed on separate conscious and unconscious tracks.
Ex. The dual processing of vision, which is made up of a visual perception track and a visual action track
How does the example of the hollow face illusion demonstrate dual processing?
The face looks like its coming out towards us, but really it's the inside of the mask. so the conscious track processes what we see and thinks it's coming towards us, but when we reach to get a bug on the face, we reach into the mask because the other unconscious track determined that it was the inside of a mask and told us (dual processing).