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PsychSim 5: Hemispheric Specialization

Terms in this set (12)

What is the name of the band of fibers connecting the left and right hemispheres of the brain? What is its function?
Corpus Callosum. Relays information between the left and right hemispheres
Each hemisphere is primarily connected to. The opposite side of the body. This means that a touch on the left hand would be registered in which hemisphere?
Right hemisphere
When sound waves enter the right ear, which hemisphere receives the primary information?
Left hemisphere ( and vice versa for the right ear)
This crossover pattern is also true in the part of the visual pathway. When light enters the left eye, which hemisphere receives the information?
Both the left and right hemispheres
How is the visual pathway from the eye different from that of the ear or hand?
Both hemispheres receive the information even if the information comes In only one side (of your ears, hand, etc.) the image you are looking at will fall on directly on the dividing line, but any object to the left of where you are staring will fall on the right side and vice versa
Explain split-brain research
...
If a participant is blindfolded and a fork is placed in his or her right hand, how would you guess that the person would respond?
The person would identify the fork
If a participant is blindfolded and a fork is placed in his or her left hand, how would you guess that the person would respond?
The person would not know what the object is
A split-brain patient can name an unseen object placed in the right hand but cannot name objects placed in the left hand. What does this suggest about the language abilities of the two hemispheres?
The left hemisphere can better process language
In an additional experiment, words are flashed briefly to the left or right visual field of the participant. Try to predict the results. For example, when the word appears in the left visual field, will the person be able to read the word?
No
In a different task, a split-brain patient has to look at a completed block pattern and assemble the blocks near his or her right hand to match the pattern, using only the right hand. Can the patient do it?
If depends on the position of the completed block pattern. If in the left vision field, then no. The information will go to the right hemisphere
Why is it that the normal humans (with an intact corpus callosum) can name objects placed in either hand and easily read words flashed to either visual field?
The information is transmitted between hemispheres, making the eye in which the information received irrelevant
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