The left-handed brain: the differences

In a right-handed world, left-handed brains have to make a series of adaptations. This involves the creation and application of strategies aimed at making him more skilled at both a psychomotor and cognitive level.

The left-handed brain: the differences

Have you ever thought about the difficulties left-handed people experience in a “right-handed world”? Currently, most of the objects are made for the right-handed. But how does the left-handed brain work? In the let's talk in this article.



While tools already exist that take their needs into account, not everyone has the ability to access them. This therefore implies the need for an adaptation on the part of individuals whose dominant hand is the left one.



But beyond the adaptation needs, in the next few lines we will analyze the peculiarities that distinguish the brain of left-handers . We will try to understand how brain activity is configured and what changes can occur . This, of course, taking into account a wide range of variables: from anatomy to carrying out daily activities.

Left-handed brain

Laterality in the left-handed brain

It can be said that the left-handed is a subject in which there is a dominance or preference to use the left side of the body . It gives priority to the use of the foot, eye, hand and left ear in the performance of any activity. This is determined by the lateralization of the brain.



Lateralization develops from psychomotor skills. It includes concepts such as the development of the body scheme, muscle development to perform certain activities and the balance necessary to perform them. In the body of left-handers, therefore, the psychomotor process is different from that of right-handers. Left-handed subjects strengthen and give preference to the left side of the body.

As far as cerebral lateralization is concerned, the process is quite different. In order to explain this aspect it is necessary clarify the hemispheric preference present in most brains . The left hemisphere has greater control over the functions of language and the sequential processing of information. On the other hand, the right hemisphere is mainly linked to space and body information activities.

Cerebral lateralization in left-handers generally has the same organization, but brain function is different. That is, the stimulation to which the left side of the body is subjected causes a different stimulation of the distribution of the body scheme, muscle development and balance. In this case, the brain gives priority to the areas of the right hemisphere, without putting aside the left hemisphere.



In this sense, it is important to highlight that the complete definition of cerebral lateralization coincides with the phase of acquiring multiple school skills . A fact that can have an impact on the development of the latter.

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Academic skills in left-handed people

Lateralization implies the preferential use of one hand in carrying out some school activities, such as writing. Through this learning mechanism, sensory and motor circuits are created in the areas involved in writing.

In left-handed people, although these circuits develop correctly, some difficulties related to this activity may arise. This because, given the way of writing, they do not see clearly what they are doing . As a result, they are more likely to make mistakes. In addition, they have problems such as getting ink on their hands as they write.

On the other hand, difficulties were also encountered in reading . This is because their innate orientation is to read from right to left, contrary to how it happens in languages ​​such as Italian and English, which go from left to right. This creates difficulties in organizing reading by providing for a possible delay in the acquisition of this skill.

Another difficulty in the school environment is related to fatigue of left-handed people in carrying out activities related to the use of paper and pen or manual skills, such as cutting. In the development of these activities they tend to be slower, as they have to calculate the direction of the stroke, as well as having to pay attention not to stain the work with the movement of the hand.

Is the left-handed brain more creative?

Among the characteristics attributed to the left hemisphere we have: spatial and visual skills, creativity , ability to synthesize and artistic talent. In light of this, one is led to think that left-handed brains are more sensitive, creative and imaginative.

This is due to the stimulation obtained by this hemisphere during its development, which may give greater importance to this characteristic. This leads to more easily accomplishing tasks that require greater creativity, such as art. Some more illustrious examples are the likes of Leonardo Da Vinci, Raphael or Michelangelo.

However, It is important to clarify that this ability does not only develop in left-handers . But rather than their brain can be benefited in developing such aspects, as it is always subjected to this stimulation.

Psychological features of the left-handed brain

Some research using functional imagery has revealed that the size of the corpus callosum in left-handed brains they are greater . The explanation given in this regard is that in order to integrate information correctly and perform activities in the best possible way, their brains must generate more interhemispheric connections.

Similarly, it was found that the sense of direction and rotation is different. That is, in activities where they are asked to rotate an object, left-handers do it clockwise. They also process graphic information from right to left . All this has advantages such as abstracting three-dimensional objects more easily and the development of precise visual-spatial skills.

Another characteristic found in people with a predominance of the left hemisphere concerns the way in which they acquire knowledge of the surrounding environment. They tend to create an outline of the context, and then focus on the details. This favors the application of unconventional solutions to everyday problems.

Calloused body

Flexibility and adaptation

In many cases, i left-handed subjects they are under greater pressure as they have to adapt to a world created for the right . As a side effect, this pressure in many cases makes them more psychomotor skillful. In addition, it would also improve interhemispheric connections, facilitating the learning of new information.

This adaptability also increases flexibility, especially cognitive. This offers greater competence in carrying out multitasking activities aimed at seeking novelty and establishing adaptable solutions to changing demands.

Conclusions

In summary, it is important to understand that left-handed people live in a world designed for right-handed people . They are therefore forced to adapt, consequently their brains must adopt strategies that can prove to be a cognitive advantage in certain situations.

Although they may encounter difficulties in acquiring and learning of reading and writing, thanks to some strategies they are able to bring this learning to completion. Similarly, the advantages in the creative field related to stimulation of the right hemisphere make their brain more prone to the elaboration of alternative solutions.

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Bibliography
  • Andrade-Valbuena, L. P. (2016). Differences in cognitive flexibility between left-handed and right-handed manuals . Recovered from https://reunir.unir.net/handle/123456789/4573
  • Pérez, J. A. P. (2009). Right Brain, Left Brain. Neuropsychological Implications of Hemispheric Asymmetries in the School Context. Educational psychology , fifteen (1), 5-12.
  • Taco, C. L. A. (2014). Left-handed laterality, a problem and a solution. Alétheia , 2 (1), 29-38. https://doi.org/10.33539/aletheia.2014.n2.1089