One Brain or Two free essay sample

Many agreed to participate in the experiments. The experiments that they held focused on finding out what kind of limitations would each brain have if they operated independently, how the 5 senses would be affected as well as finding their unique abilities. The two hemispheres were analyzed with three different tests. One of the tests studied their visual abilities and interpretations. The test consisted on placing an image at a specific place while having their eyes fixed at a determined point.So that would make the patient capture the visual information in only one of the visual fields (area) of the right or left hemisphere. Interesting findings came out of this test. The patients claimed verbally to not have seen anything on the right field. However, when they were asked to point at the image seen, they pointed at the image on the right field where they had claimed to not have seen anything. We will write a custom essay sample on One Brain or Two? or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page These results lead Sperry and Gazzaniga to a logical conclusion: Our speech is controlled by the left hemisphere only.In other words, split-brain patients were not able to verbally express or even confirm what the right hemisphere has seen. Another of Gazzaniga and Sperry tests focused on tactile stimulation. This test was really simple. It consisted on being able to touch different items without seeing or hearing it. The results of this experiment give to the previous Gazzaniga and Sperry logical conclusion more credibility. At the time the patients used their right hands (connected to the left hemisphere), they could not name or describe verbally anything related to the objects.However, it was not the same story with the left hands of the patients (connected to the right hemisphere). They could match and point at the objects without problem; proving again the lack of speech ability that the right hemisphere has. The other test held was an auditory test. The test was done in two different ways. One way was finding the objects in a bag that were mentioned verbally and the other was identifying the item reached by touch. This test’s results were also supporting the previous researchers’ logical conclusion about the left hemisphere ability of speech.It confirmed the right hemisphere’s ability of comprehending language and its ability of expressing it in a nonverbal way. During the test, evidently, the right hemisphere had no trouble identifying the unknown objects by touch as the left hemisphere did. Moreover, some three- dimensional drawings of the slit-brain patients, who were all right handed, developed much better drawings using their left hands compared with their right hands. Those three types of tests were combined to make new tests. But the results are all similar to the ones mentioned before. These amazing findings get us to the conclusion that we possess two different brains with different abilities and behaviors. Gazzaniga emphasizes the possibility of doubling the brain’s performance by separating both halves. In other words, to put each brain half to think on their own. I find this hypothesis of perhaps being able to manage 2 tasks or having 2 extreme different thoughts at the same time very interesting. Knowing that something that sounds like fiction could actually be a possible truth one day provokes me countless thoughts about our so uncertain future.