The purpose of this paper is to evaluate the correlational method as a means for examining the relationship between functions of the left and right hemispheres. I will compare the performance of people with intact brains with the performance of so-called split-brain patients. In many ways, the brains of these two groups are very similar. 1.a The location of the brainstem in the normal brain is located in the back part from the brain. The function of the brainstem is to have control of the body because the brain is in some way connected to the body. The difference between the functions of a normal brain and that of a split-brain brainstem is that a split-brain may send negative messages to the body that can cause negative effects mainly because a split-brain is an injury. 1.b The location of the hippocampus is in the middle part of the brain. The function for the hippocampus is to be helpful with terms of memory but with the long-term memory it aids the most. There doesn’t seem to be some difference regarding the hippocampus with the spilt brain. 1.c The location of the corpus callosum is located at the center of the brain. The function of the corpus callosum said by ‘Know Your Body’ is to deliver neural messages to both sides of the brains hemisphere which is the right and left. 1.d The location of the of the cerebral cortex is located in the front lower part of the brain. Its function is to process different parts of the brain regarding sensory. A difference that a normal brain and a split-brain can have regarding the cerebral cortex may be the ability to process what they ‘see’. Having a split-brain gives you a disadvantage when it comes to saying what you see.
The split-brain patient provides scientists with a window into the normal functions of the brain. 2.a A split-brain patient is a patient that has a brain that doesn’t use both the right side and left side brain like a normal brain would. Alexander Burgemeester, a graduate in Neuro-Psychology at the University of Amsterdam, said that the surgical technique in how to treat it is by “cutting through the middle of the brain, known as the corpus callosum, and separating the two halves of the hemispheres effectively leaving the patient with two brains.” 2.b A test of the split-brain patient used to demonstrate that language function is lateralized to one hemisphere is by asking a patient with split-brain to tell us what they see on each eye and see if they are able to do it. With that we will be able to tell which hemisphere is lateralized to language. 2.c The result with split-brain patients that can be used to understand laterality in the general population is testing those with people who have intact brains and split brains to see the advantages and disadvantages of both brains.
Cognitive tests performed on split-brain patients have identified a division of labor between hemispheres. It is conceivable that functions handled by the different hemispheres will show a strong relationship in the general population, but not in split-brain patients. 3.a Four brain functions that are lateralized to the left hemisphere that was given from ‘The Brain Made Simple’ is left-hand control, creativity, imagination and art awareness and the right is logic, language, right-hand control and reasoning. 3.b The Hypothesis is that, in intact brains, there would be a strong relationship between functions typically performed by the left hemisphere and those performed by the right hemisphere. We might hypothesize further that, in split brains, the relationship between hemispheres would disappear. The correlational method might be an appropriate technique for testing this hypothesis. 3.c I will use the correlation method to see how much of a difference there is between an intact brain and a split-brain and see if they have a strong or weak correlation.
Data were collected from a group of split-brain patients and a group from the general population to test the hypothesis using the correlational method. Each group completed three tasks shown previously to be lateralized: (1) a vocabulary test, (2) a logical reasoning task, and (3) a face recognition task.” 4.a The task vocabulary, and logical reasoning should be indicated in the left part of the hemisphere while the face recognition should be on the right side. 4.b My prediction for the pattern of correlation by looking at the data can be that they both have a strong correlation meaning both brains might be the same. 4.c The correlation for intact brains for Reasoning & Face is r = 0.85, where I = 60.2958; II = 116,785.8359; III = 2,253.1229. The correlation for intact brains for Vocabulary & Face is r = 0.635, where I = 78,176; II = 116,785.8359; III = 60,669.58. The correlation for intact brains for Vocabulary and Reasoning is r = .712; I = 1,545.78; II = 78,176; III = 60.296. The correlation for split-brain for Vocab & Reasoning is r = .72; I = 88,909; II = 95.91; III = 2,089.687. The correlation for split-brain for Reasoning & Face is r = 0.003; I = 15,091.95; II = 108,737.5519; III = 137.15. Lastly, the correlation for Vocab and Face is r = .345; I = 88,909; II = 108,737.55; III = 33,889.21.
The results of the correlational method were valuable in addressing the hypothesis under study. However, future investigations may need to adopt techniques that improve upon those used here. 5.a The results of the correlational analysis is consistent with the hypothesis because it shows how intact brains having a stronger correlation than those of split-brains. 5.b I believe that there isn’t any data given that’s not readily fit with the hypothesis. 5.c A feature that could be improved if the study were to be repeated might be using more people to get better data. 5.d Correlation studies can be used to evaluate hypothesis because it gives us either if the correlation of something is either weak, strong, positive or negative and with that studies can benefit from it. 5.e An experiment that I would use would be the same people used for this hypothesis but I would give them different tests to see if there are benefits in having a intact brain or a split-brain.