What Does Your Handedness Say About Your Brain Structure?

Left-handedness, as a relatively uncommon phenomenon, never fails to fascinate people. There is a common perception that left-handed people are more talented and artistic. To what extent these assumptions are correct, and what your preferred use of right or left hand can tell you about your brain structure? Handedness represents the better performance or preference of using one hand, i.e., the dominant hand. Right-handedness is the most common type observed in 70–95% of the world population, followed by left-handedness, and then a very rare type of mixed handedness and ambidexterity. Although this is an important physiological feature in humans, it seems that the origins of handedness are not well understood. While many scientists assume that genetics is the main determinant of handedness, others disagree and believe that other factors also play an important role. They believe that variations in handedness are related to some behavioral and anatomical measures. For instance, although just 10% of humans are left-handed, these individuals tend to be over-represented in artistic professions, have better mathematical abilities, and have a lower predisposition to diseases such as arthritis and ulcers. On the other hand, there is an increased prevalence of some health issues, including cardiovascular disease, dyslexia, asthma, multiple sclerosis, and others. In addition to strict (constant) handedness, there is something called mixed, i.e., inconsistent handedness. Some scientis...
Source: World of Psychology - Category: Psychiatry & Psychology Authors: Tags: Brain and Behavior Brain Blogger Publishers Brain Structure Handedness left-handed right-handed Source Type: blogs