Issues in Neuroscience
Question: In the Visual Ability test, a split-brain patient was shown an image in the left visual field but could not name the object. Explain why and identify the specialized functions that were discovered with regard to hemispheric lateralization. Consider some of the difficulties the split-brain operation causes and the strategies you would recommend to help a patient manage them. Was it ethical to do this study? Was it right to trade the suffering experienced by participants for the knowledge gained by the research?
Issues in Neuroscience
In the 1940s, it was established that disconnecting the two hemisphere of cerebral through dividing corpus callosum reduced the effects of epilepsy among the epileptic patients. This was because the sectioning of the nerve fibres’ bridge which connected the two hemispheres did not interfere with the interhemispheric processing. However, tests carried out on patients who had been operated reveal that there are dramatic effects brought about by the disconnection. This problem is known as the split-brain brain syndrome and has some effects on the patients’ cognitive skills.
Patients suffering from this syndrome are unable to verbally name an object that is placed on their left hand side if their eyes are closed. This is despite the fact that they can tell an object placed on their right when their eyes are closed. However, if the object is placed among many items and placed on the patient’s left hand, he or she can easily select the item from the other objects. This problem is brought about by the fact that the left hemisphere has access to speech something that the right hemisphere does not have access to. This syndrome is caused by the fact the splitting of the brain makes it unable to coordinate its activities. The right hand part of the brain is unable to know what its left part is doing whereas the left part is unable to know what the right hand part of the brain is doing (Plotnik & Kouyoumjian, 2011).
To control this condition, patients should pay a lot of attention to what they do. This stems from the fact that the two parts of the brain do not coordinate in their operations which makes it hard for one part of the brain to understand what the other part is doing. In this case, through paying attention, the patient will be able to coordinate the activities of both parts of the brain.
Doing this experience was ethically right if the identity of the person the experiment was conducted on was not revealed. This is because the experiment was aimed to find out ways of helping the other patients suffering from this problem and not for the benefit of the people conducting the experiment.
Plotnik, R., & Kouyoumjian, H. (2011). Introduction to psychology. Belmont, CA: Wadsworth/Cengage Learning.
Footnote: I am sorry about the assignment being late as I had walking pneumonia. I tried to sit to my computer yesterday after work and seeing the Doctor but just kept falling to sleep. Had to just give it up and try again today.
I need these questions answered today please!!! Must go to work. Called in. MUST BE DONE TODAY BY 10:00 P.M. cst