The left hemisphere of the brain processes information analytically and sequentially. Neuroscientist and Nobel laureate Roger Sperry has contributed significantly to the research of lateralization and split-brain function. For instance, structurally, the lateral sulcus generally is longer in the left hemisphere than in the right hemisphere, and functionally, Broca's area and Wernicke's area are located in the left cerebral hemisphere for about 95% of right-handers, but about 70% of left-handers. The hemispheres exhibit strong bilateral symmetry regariding structure as well as function. The human brain is split into two distinct cerebral hemispheres connected by the corpus callosum. Essentially, the brain is interconnected, and the two hemispheres support each other in its processes and functions. The brain scans did not show any evidence that people use one side of the brain more than the other. Neuroscientists analyzed over 1,000 brain scans from people between the ages of seven and 29. These findings, while true, serve as the basis for the now-disproved theory that people who are logical, analytical and methodical are left-brain dominant, and those who are creative and artistic are right-brain dominant.Ī study conducted at the University of Utah has debunked the myth. The right hemisphere tends to recognize relationships, integrate and synthesize information, and arrive at intuitive thoughts. Sperry discovered that the left hemisphere of the brain usually functions by processing information in rational, logical, sequential, and overall analytical ways. left brain dominance originates with Nobel Prize winning neurobiologist and neuropsychologist Roger Sperry. Trouble with visual perception (understanding how far or near something is) neglect of left side of the body inability to see things to the left poor decision making impulsiveness short attention span slow learning of new things. Trouble speaking or understanding spoken or written words slow, careful movements inability to see things on the right side of the body. Visualization, spatial/abstract thinking,įollowing by sequence, understanding parts, organizing a large body of information, remembering names. Multi-dimensional thinking, art, music, drawing, athletics, coordination, repairs, remembers faces, places, events. Mathematics, analytics, reading, spelling, writing, sequencing, verbal and written language. Intuitive - spatial/abstract perception emphasis on possibilities. Logical - order/pattern perception emphasis on strategies. Random non-verbal (process with visuals). Holistic, big-picture oriented - "whole to details" approach. Linear, detail-oriented - "details to whole" approach. Holistic thinking, random processing, intuitive decision-making, non-verbal processing, fantasy-oriented.Īnalytical, logical, pay attention to detail
Linear thinking, sequential processing, logical decision-making, reality-oriented. Spatial awareness, intuition, facial recognition, visual imagery, music awareness, art, rhythm. Speech and language, logical analysis and reasoning, mathematical computations. Comparison chart Left Brain versus Right Brain comparison chart
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