The Nervous System
Essay by review • December 18, 2010 • Essay • 583 Words (3 Pages) • 1,336 Views
The Nervous System
1.
Photos of Faces (Levy et al., 1972)
Levy and his colleague were investigating that how would splitting the brain affect language and other abilities. In this research, the researchers took photographs of different faces, cut them in two, and pasted different halves together. Then the researchers showed the recreated picture to the split-brain patients on slides. The researchers also told the patients to stare at a dot on the middle of the screen, so that the half the image fell to the left of this point and half to the right. At the same time, they slide the pictures so fast that the patient had no time to move his or her eyes. When the asked the patient what they had seen, they said that they had seen the face on the right side of the composite--yet they pointed with their left hands to the face that had been on the left.
This investigation showed the researcher that the two cerebral hemisphere could not communicate, the verbal left hemisphere was aware of only the right half of the picture, and the relatively mute right hemisphere aware of only the left half.
2.
a) Cerebellum is one of the part of a brain structure that is located in the back of the brain, and a size of a small fist, it plays important role in the coordinate movement such as balance and muscles coordination. In addition, cerebellum plays in higher cognitive tasks, such as evaluating sensory information, resolve problems, and understanding words. If the person sustained an injury to that part of the brain, they would have ataxia that is the problem in the muscle coordination. This can obstruct with a person's capability to walk, talk, eat, and to perform other self-care tasks.
b) Thalamus is one of the parts of a brain structure that is located deep in the interior of the brain, roughly at brain center. It plays an important role in the perception of sensation. For instance, the sight of a sunset sends signals that the thalamus directs to a vision area, etc. If that part of the brain get injure, then the person
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