Right, left: what is the difference between left-handed and right-handed

(ORDO NEWS) — All are right-handers with an analytical mindset and developed logic, while left-handers are creative, disorganized, but artistic. Everyone has known this since childhood… and this is the deepest delusion.

All people equally use both halves of the brain – a scientific fact. However, stereotypes associated with the predominance of the left or right hemisphere persist and continue to arouse curiosity.

The human brain is divided into two separate hemispheres connected by the corpus callosum. The hemispheres show a perfectly symmetrical structure and function. In 2013, scientists at the University of Utah published the results of a massive two-year study of both hemispheres.

In short, the authors did not find any evidence of significant differences in the dominance of one or another hemisphere in humans, and they examined a thousand people aged 7 to 29 years.

Scientists have thoroughly studied MRI images, namely activity in 7,000 areas of the brain and examined the neural connections within and between these areas, concluding that there is no evidence that one hemisphere of the brain is used more than the other.

Right left what is the difference between left handed and right handed 2

In fact, the hemispheres of the brain are interconnected and support each other in their processes and functions. They are united by a huge bundle of nerve fibers that create an information highway. Although the two sides function differently, they work together and complement each other.

Whether you are performing a logical or creative function, you receive the same amount of information from both hemispheres of your brain. For example, language is attributed to the left, but the right hemisphere helps you understand its context.

The left brain processes math equations, but the right brain helps with comparisons and rough estimates in calculations.

General personality traits, individual preferences, mindset, and even more so the level of intelligence does not depend on whether you are left-handed or right-handed. Unless in the situation with vision, things are a little more complicated.

The myth that humans have a dominant hemisphere over the other arose from a study by Nobel Prize winner Roger Sperry in the 1960s. Sperry studied patients with epilepsy who were treated with surgery. Roughly speaking, the poor fellows had their brains cut along a structure called the corpus callosum.

Because the corpus callosum connects the two hemispheres of the brain, the left and right sides of these patients’ brains could no longer exchange information. Sperry and other researchers used a series of smart tests to determine which parts or sides of the brain were involved in speech, math, drawing and other functions in these patients.

If you remove an entire hemisphere from the brain of a three-month-old baby – an operation that doctors sometimes perform in cases of severe epilepsy and other disorders – this will not affect the development of the child in any way, he will grow up the same as his peers, and the brain, more precisely, the remaining hemisphere, adapts to work alone. Surgeons have been performing such an operation since the beginning of the last century.

Therefore, left-handers and right-handers are dominated not by one of the hemispheres, but by certain skills. People with an analytical mindset may well be creative lines, and left-handed people can become famous mathematicians. Every person uses his brain holistically and regardless of whether he is an analytical or a creative person.


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