Brain Asymmetry Experiment
Distinctiveness between the right and left hemisphere of the brain
Word Count: 995
Abstract
The brain assymetry experiment is to investigate on the distinctiveness of the right and left hemisphere in the brain as each hemisphere has certain specializations. The experiment were carried out by initially asking the 25 participant on whether they were left or right handed and they had to choose the chimeric image which appeared younger to them. Laterality quotients were calculated in order to deduce the effect of the right or left hemisphere on visuo-spatiality as the participants had to make judgements on the faces. Right-handed individuals showed leftward perceptual bias compared to left-handed individuals, indicating that the right hemisphere has an effect on judgement of faces.
Introduction Brain assymetry refers to the fact that the brain has two different hemispheres, each assigned with different tasks and capabilities. Language, logical and analytical thoughts are dealt on the left side of the brain while spatial relations and creativity is dealt on the right side of the brain. The hemispheres controls the opposite sides of the body as the sensory signals are sent from the right side of the brain to the left side of the body and vice versa. The differences of the hemispheres have been studied through case studies of split-brain patients such as JW, whom underwent surgery to prevent epileptic seizure passing to the other hemisphere. The brain assymetry experiment is created to study the functional differences of the left and the right hemispheres, which is a technique devised by Levy, Heller, Banich and Burton (1983). Hypothesis
Right-handed people will perceive the chimeric image as younger when the left half of the face has younger qualities than the right side of the face, more often than the left-handed people. As right-handed people tend to show more effects of right and left-brain specialization than left-handed people,
Word Count: 995
Abstract
The brain assymetry experiment is to investigate on the distinctiveness of the right and left hemisphere in the brain as each hemisphere has certain specializations. The experiment were carried out by initially asking the 25 participant on whether they were left or right handed and they had to choose the chimeric image which appeared younger to them. Laterality quotients were calculated in order to deduce the effect of the right or left hemisphere on visuo-spatiality as the participants had to make judgements on the faces. Right-handed individuals showed leftward perceptual bias compared to left-handed individuals, indicating that the right hemisphere has an effect on judgement of faces.
Introduction Brain assymetry refers to the fact that the brain has two different hemispheres, each assigned with different tasks and capabilities. Language, logical and analytical thoughts are dealt on the left side of the brain while spatial relations and creativity is dealt on the right side of the brain. The hemispheres controls the opposite sides of the body as the sensory signals are sent from the right side of the brain to the left side of the body and vice versa. The differences of the hemispheres have been studied through case studies of split-brain patients such as JW, whom underwent surgery to prevent epileptic seizure passing to the other hemisphere. The brain assymetry experiment is created to study the functional differences of the left and the right hemispheres, which is a technique devised by Levy, Heller, Banich and Burton (1983). Hypothesis
Right-handed people will perceive the chimeric image as younger when the left half of the face has younger qualities than the right side of the face, more often than the left-handed people. As right-handed people tend to show more effects of right and left-brain specialization than left-handed people,
References: 1. Gazzaniga, M. S. (2005). Forty-five years of split-brain research and still going strong. Nature Reviews Neuroscience, 6(8), 653-U651 2. Levy J, Trevarthen C (IC)76): Metacontrol of hemispheric function in human split-brain patients. J Exp Psvchol (HP&P) 2:299-312 Reeves AG, Roberts DW, eds. (1995): Epilepsy and the Corpus Callosum 2 3. Levy , J. (1972). Perception of bilateral chimeric figures following hemispheric disconnection. Brain, 95, 61-78. 4. Bruce, W. (2002). Atypical depression: Enhanced right hemispheric dominance for perceiving emotional chimeric faces. Journal of Abnormal Psychology,111(3), 446-454. 5. Levy. J., Heller, W. Banich, M., & Burton, L. (1983). Assymetry of perception in free viewing of chimeric faces. Brain & Cognition, 2, 404-419