The left hand and true Neurological disorders It could go hand in hand, revealed a new study, although researchers and others recognized the potential limitations.
While about 10% of people in the world are left -handed, People with autism They are 3.5 times more likely to be shot, according to an international team of researchers who analyzed data of more than 200,000 individuals.
The study, published in the Psychological Magazine Bulletin, indicated that the left hand and the mixed also appears more often in people who have diagnoses such as schizophrenia, autism and intellectual disability.
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According to psychology experts, it refers to a situation where people can use their left hand for a certain task and their right hand for others.
This is slightly different from the ambidexterity, which is the same use of both hands.
The study showed that the left and mixed hand appear more often in people who have certain diagnoses such as schizophrenia, autism and intellectual disability. (Istock)
“The main dams of this study are that the alterations in the preference of the standard of the norm (that is, the right hand) are especially associated with psychiatric and psychological conditions that affect the linguistic system (for example, dyslexia or schizophrenia) or affect the development of neurodes development through an early age (for example, Autism or ADHD), Dr. Julian), Packheiser, Dr. Julian Packheiser.
He is a researcher at the Ruhr Bochum University Cognitive Institute in Ruhr Bochum.
“Correlation does not imply causality, and being left does not mean that someone develops autism or schizophrenia.”
Not all neurological conditions showed a bond in the dominant hand of people.
Depression and disability (a disability in learning mathematics), for example, showed no significant difference in the preference of the hands compared to control groups, found the study.
Linguistic factor
Researchers also determined that the “atypical hand” may be associated with long -term linguistic symptoms such as stuttering and dyslexia.
“In most people, the dominant side of his brain It is usually where speech, language, logical processing and hand preference are found: “Dr. Earnest Lee Murray, a neurologist by West Tennessee Medical Group, told Fox News Digital.
Was not involved in the new study.
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“People who are left -wing or ambidextrous often do not have such a dominant unilateral brain, but the key portions of language can be divided between the two parties,” Murray said.
The study also examined the likelihood of atypical delivery in clinical populations or groups of people diagnosed with a specific set of Conditions of health compared to a control population.
It seems that, the sooner the symptoms of a disorder arose, researchers more often saw cases of left and mixed hand. (Istock)
“We suspected that the left and mixed hand could be associated with disorders whose symptoms are related to language,” Packheiser said in a statement statement.
“Language, like the hand, has a very face -to -face location, so it is reasonable that the development of the two and their disorders can be related.”
Synchronization is key
Researchers also considered other factors that could come into play, such as the age at which a person may have symptoms.
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Looks like as soon as possible The symptoms of the disorder It arose, researchers most often saw cases of left and mixed hand.
Researchers hypothesized that left and mixed manipulation could be associated with diseases that occur very soon in life, because the dominant hand is determined at a very early age, possibly even Before birth.
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In the uterus, the gestation of the thumb at ten o’clock is closely linked to which the hand will be preferred later in life, they pointed out.
The connection could help experts potentially understand how to organize brains and how they develop.
The new study includes potential limitations. According to experts, not all neurological conditions show a bond in the dominant hand of the person. (Istock)
“The study has implications in understanding the ways of finishing the neurorehabilitation of patients with unilateral brain conditions, such as a stroke, Multiple sclerosis or a traumatic brain injury, “said Murray.
Potential limitations
Jonathan Alpert, a psychotherapist and author of Manhattan, said that the study was “interesting”, although he emphasized his limitations.
“The correlation does not imply causality, and being left does not mean that someone develops autism or schizophrenia,” said Alpert, who was not involved in the study, told Fox News Digital.
“The hand is just one of the many factors that can be associated with neurological features and these findings must be interpreted with caution to prevent unnecessary alarm or stigma.”
The study found that depression showed no significant difference in the preference of hands compared to control groups. (Istock)
Alpert called for more research to understand the relationship, if any, between his hand and mental health.
The main author Packheiser agreed that the results are “purely correlational”.
“We have no causal evidence that the development of a psychiatric disorder related to language or neurodevelopmental provides a change of hand or if changes in the hand cause any disorder,” Fox News Digital told.
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“Therefore, people in the general public should not alarm if their child prefers to use his left hand,” the researcher said.
“But, given the increase in mental disorders in the population, it is important to understand -best.”
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