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What Does The Left Hemisphere Of The Brain Control

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Is It Better To Be Left

Why Your Left Brain Hemisphere Controls The Right Parts Of Your Body

After centuries of studying the brain, neuroscientists have come up with an answer. Theres no difference if youre more left-brained or right-brained.

Its best to meet in the middle and exercise both the left and right sides of your brain.

People who use both their right and left the brain to solve problems are able to successfully analyze situations taking into account emotions, as well as logical reasoning.

Those who;use their left and right brain actively have a broad range of interests. For example, someone who is a left brain thinker like a scientist or mathematician will enjoy painting and playing the guitar on the weekends.;

We can say the same for someone who is a right-brain thinker like a dancer or artist. As one of their hobbies, they might learn foreign languages and solve math problems.

In sum, its essential for both the;left and right brain hemispheres to work together.;They both need to find balance because one cant function without the other.;

Lateralization Of Brain Function

Jump to navigationJump to searchFunctional specialization lateralized

The lateralization of brain function is the tendency for some neural functions or cognitive processes to be specialized to one side of the brain or the other. The medial longitudinal fissure separates the human brain into two distinct cerebral hemispheres, connected by the corpus callosum. Although the macrostructure of the two hemispheres appears to be almost identical, different composition of neuronal networks allows for specialized function that is different in each hemisphere.

Lateralization of brain structures is based on general trends expressed in healthy patients; however, there are numerous counterexamples to each generalization. Each human’s brain develops differently, leading to unique lateralization in individuals. This is different from specialization, as lateralization refers only to the function of one structure divided between two hemispheres. Specialization is much easier to observe as a trend, since it has a stronger anthropological history.

What Is Brain Lateralization

Information that enters the left hemisphere travel across the corpus callosum going to the right side of the brain and vice versa. The two hemispheres of the brain function interdependently.

Each of them has a role to play in the processing of information although the other is more dominant in certain functions. The process is called brain lateralization. The degree of brain lateralization is not the same in everyone.

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The Left Brain Right Brain Myth

While there is a left brain and a right brain, their use in popular culture has created a widespread misunderstanding. Itâs common to believe that the left brain is for logical thinking and the right brain is for creativity. People categorize themselves as being left or right brain-oriented depending on their interests and skills.

Scientists have been able to look closer at the brain and see that itâs more complicated than âleft = logical.â It wasnât until the 1960s when split-brain surgeries, a treatment of epilepsy, gave scientists the chance to investigate each half of the brain separately.

Scientists deduced that the left brain was better at language and rhythm, while the right brain was better at emotions and melody. However, this doesnât mean that the two halves are entirely separate.

The myth of the totally opposite hemispheres persists for a variety of reasons.

  • It satisfies the need for order.
  • Like astrological signs, it gives people a defined personality type.
  • People naturally see creativity and logic as opposites.
  • People find the idea of having untapped creative power appealing.

Brain Structure And Function

Zentangle: Heart

The brain has two halves or hemispheres: right and left. The right hemisphere controls the left side of the body, and the left hemisphere controls the right side. In most people, the left hemisphere regulates language and speech, and the right hemisphere controls nonverbal, spatial skills. If the right side of the brain is damaged, movement of the left arm and leg, vision on the left, and/or hearing in the left ear may be affected. Injury to the left side of the brain affects speech and movement on the right side of the body. Each half of the brain is divided into main functional sections, called lobes. There are four lobes in each half of the brain: the Frontal Lobe, Temporal Lobe, Parietal Lobe, and Occipital Lobe. Other important sections of the brain are the Cerebellum and the Brain Stem. Although not usually divided into lobes, the cerebellum and brain stem both have different parts. Each of the brain hemispheres and lobes, cerebellum, and brain stem has specific functions, and they all work together:

This image is from:

Frontal Lobe:;most anterior, right under the forehead; the frontal lobe controls intellectual activities, such as the ability to organize, as well as personality, behavior, and emotional control.

Parietal Lobe:;near the back and top of the head above the ears; the parietal lobe controls the ability to read, write, and understand spatial relationships.

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Right Brain Hemisphere Vs Left Brain Hemisphere

The left brain hemisphere is needed for rational thinking and logical skills such as mathematics and language. On the other hand, the right side of the brain is responsible for creative activities like arts and connecting to others in an emotional way. So, a person who is left brain dominant is logical while the right brain dominant is more emotional.

What Are The Warning Signs Of A Stroke

The words BEFAST can help you remember and recognize warning signs of a stroke:

  • B = Balance: Sudden loss of balance
  • E = Eyes: Loss of vision in one or both eyes
  • F = Face: Face droops on one side
  • A = Arms: Arm drops when both arms are raised
  • S = Speech: Speech is slurred or sounds different
  • T = Time: Time to get help immediately

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Lobes Of The Brain And What They Control

Each brain hemisphere has four sections, called lobes: frontal, parietal, temporal and occipital. Each lobe controls specific functions.

  • Frontal lobe. The largest lobe of the brain, located in the front of the head, the frontal lobe is involved in personality characteristics, decision-making and movement. Recognition of smell usually involves parts of the frontal lobe. The frontal lobe contains Brocas area, which is associated with speech ability.
  • Parietal lobe. The middle part of the brain, the parietal lobe helps a person identify objects and understand spatial relationships . The parietal lobe is also involved in interpreting pain and touch in the body. The parietal lobe houses Wernickes area, which helps the brain understand spoken language.
  • Occipital lobe. The occipital lobe is the back part of the brain that is involved with vision.
  • Temporal lobe. The sides of the brain, temporal lobes are involved in short-term memory, speech, musical rhythm and some degree of smell recognition.

What Is The Pons Function

What Does the Left Side of the Brain Control

The pons, while involved in the regulation of functions carried out by the cranial nerves it houses, works together with the medulla oblongata to serve an especially critical role in generating the respiratory rhythm of breathing. Active functioning of the pons may also be fundamental to rapid eye movement sleep.

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Injury In The Right Hemisphere Of The Brain

The right hemisphere of the brain controls the left side of the body. Any injuries on the right side of the brain could result in left-sided weakness. The following problems could arise:

  • The patient finds it challenging to focus on concentrate on a task.
  • The left side of the body cant attend to things.
  • Difficulty in processing the information on the left visual field.;
  • The patient cant recall the previously learned information as well as difficulty in learning new information.
  • The person fails to identify problems or even generate solutions.
  • The persons social communication skills are affected such as interpreting abstract language, understanding jokes, making inferences, and understanding non-verbal cues.;
  • Difficulty in recalling significant events such as the time, date, and place.
  • Difficulty in organizing things such as arranging information and planning.

A detailed comparison between the right brain hemisphere and the left brain hemisphere is shown in the table below.

The brains two lateral halves also known as left hemisphere and right hemisphere have neurons/receptors which are used for various bodily functions. The left hemisphere of the brain is in-charge of the cognitive functions such as speech and language.

The right hemisphere of the brain is more on creativity and face recognition. Although the functions of the brain is divided based on its hemisphere, even a particular functions to be executed, it would still need the entire brain.

References

Is There A Right Brain Vs Left Brain Test

While recent research often contradicts the concept of strict right-brain vs. left-brain laterality, the way a person learns most effectively may be described by what is often categorized as left-brain or right-brain functioning. Brain Works software is thought to be an effective left-brain vs right-brain test. The test uses questions in the form of written text and graphs to calculate the dominant side of a persons brain.

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Damage To The Left Brain

Damage to either side of brain can lead to adverse effects on the individuals body. Considering that the right part of the body is commanded by left brain, any damage caused to it shows in the form of adverse effects on the right side of the body. Nervous system and immune system are related to each other and hence, any damage caused to either of them, reflects on the other parts of human anatomy. Even studies stress on the basic fact that left hemisphere brain damage can lead to immunological disorder in right-handed individual. Besides this, the person is also known to experience difficulty with various functions attributed to this side of the brain, including speaking, writing, memorizing, and analyzing.

All these functions and characteristic traits of the left brain help people excel in fields requiring analytical skills. These include law, accounting, engineering, etc.

In Conclusion: Brain Anatomy

Thumbing through life......: Left Handers Day 13th August 2011

The human brain is an incredibly complex, hardworking organ. As one-half of the human nervous system, the brain structure oversees nearly all of the bodys operations, including how we move, think, feel and understand ourselves and the world around us. And knowing all this brain anatomy is important. From the cerebrum, cerebellum and the brain stem, to all the parts in between: this three-pound organ is what makes us humans, well, human.

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Common Symptoms Of Stroke

Symptoms of stroke depend on which area of the brain is affected. A stroke in the brain stem can interfere with vital functions such as breathing and heartbeat. Other functions that we perform without thinking, such as eye movements and swallowing, can also be altered. Brain stem stroke can also impair your speech and hearing, and cause vertigo.

All of the signals from your brain move through the brain stem to reach the different parts of your body. Nerve cells that come from various sections of the brain carry these signals right through the brain stem to the spinal cord.

When blood flow in the brain stem is interrupted, such as with stroke, those brain signals are also disrupted. In turn, the different parts of the body that these signals control will also be affected. This is why some people experience numbness on one or both sides of the body, or paralysis in their arms or legs.

The Two Hemispheres And Brain Lateralization

Brain lateralization is the idea that some brain functionsrely more heavily on one hemisphere than on another. One example of this is when we process language. The left hemisphere is in charge of language processing for the most part, whereas the right hemisphere only processes verbal information in relation to emotion. However, it has recently been that speech is processed in both hemispheres equally, so perhaps language is not as lateralized as we previously thought.;

Likewise, it was believed that a left-handed persons brain was less lateralized for language development. That is, it was believed that these people would use more of the right brain hemisphere for language, contrary to the general right-handed population. It has been that this only happens in 1% of the left-handed population.;

It was even found that the degree of lateralization of some brain functions may vary from individual to individual.

Our brain is lateralized in some of its functions, however, most of these happen in both hemispheres. If a brain region or even a whole hemisphere is damaged or destroyed, other neighboring areas or even the opposite hemisphere may, in some cases, take over the activity typically performed by the damaged region. When brain damage interferes in the connections between one area and another, alternative connections can be developed to bridge the difficulties. This is only possible thanks to the brains great ability to adapt, which is called brain plasticity.

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Detailed Information About The Functions And Characteristics Of The Left Brain

  • It has the ability to understand the sum of any situation/look at things from.
  • It involves the movement of large muscles such as walking.
  • It plays an important role in maintaining balance.
  • It is responsible for non-verbal communications.;
  • It can sense smell, taste, and sound.
  • It is responsible for emotional functions.;
  • It regulates avoidance behavior.;
  • It controls the immune system.
  • It is in charge of involuntary body functions like digestion, the beating of the heart, and breathing.;
  • It is stimulated by new experiences.;
  • It affects the persons ability to pay attention to details.
  • Fine motor skills.
  • Convert sounds to language and translates meaning.;

The Geography Of Thought

Brain Lobes and Left and Right Hemispheres of the Brain

Each cerebral hemisphere can be divided into sections, or lobes, each of which specializes in different functions. To understand each lobe and its specialty we will take a tour of the cerebral hemispheres, starting with the two;frontal lobes , which lie directly behind the forehead. When you plan a schedule, imagine the future, or use reasoned arguments, these two lobes do much of the work. One of the ways the frontal lobes seem to do these things is by acting as short-term storage sites, allowing one idea to be kept in mind while other ideas are considered. In the rearmost portion of each frontal lobe is a;motor area;, which helps control voluntary movement. A nearby place on the left frontal lobe called;Brocas area; allows thoughts to be transformed into words.

When you enjoy a good mealthe taste, aroma, and texture of the foodtwo sections behind the frontal lobes called the parietal lobes; are at work. The forward parts of these lobes, just behind the motor areas, are the primary;sensory areas;. These areas receive information about temperature, taste, touch, and movement from the rest of the body. Reading and arithmetic are also functions in the repertoire of each parietal lobe.

As you look at the words and pictures on this page, two areas at the back of the brain are at work. These lobes, called the;occipital lobes;, process images from the eyes and link that information with images stored in memory. Damage to the occipital lobes can cause blindness.

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What Emotions Does The Left Hemisphere Process

The left hemisphere is dominant for processing positive emotions whereas the right hemisphere is dominant for processing negative emotions. According to the valence hypothesis, fear, anger, disgust and sadness are considered negative emotions, and happiness and surprise are classified as positive emotions.

Where Did The Myth Of The Right Brain And The Left Brain Come From

This myth arose from the misinterpretation of Roger Sperrys experiments on divided brains. Studying the effects of epilepsy, Sperry found that cutting corpus callosum could reduce or eliminate epileptic seizures.

However, these patients also suffered other symptoms after communication channels between the brain hemispheres were severed. For example, many brain-split patients found themselves unable to name objects that were processed on the right side but were able to name those processed on the left side .

From this information, Sperry suggested that language was controlled exclusively by the left side of the brain.

We hoped you liked our article and please feel free to comment below.

This article is originally in Spanish written by Andrea García Cerdán, translated by Alejandra Salazar.;

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How To Use This Information To Help Your Child

If a child has a strong left brain and a less mature right brain, he may experience social difficulties and have little interest in sports or outdoor activities. This imbalance in skills can be tough on kids and parents.;

It was once thought that the brain was static, unable to grow or change. But extensive research has shown that the brain remarkably adaptable, able to create new neural pathways in response to stimulus in the environment. This is a branch of science called neuroplasticity.

Children With A Strong Left Brain Function Typically Perform Well Academically But May Struggle Socially And Behaviorally

Human Brain Left And Right Functions Royalty Free Stock ...

Our brains consist of two sides or hemispheres. Children with behavioral, academic, social, or other challenges often have an imbalance where they predominantly use one side of the brain. This causes one side of the brain to be stronger, while the other side develops more slowly and is weaker.

The left hemisphere of the brain controls learning and information processing. Children who have stronger left-brain functions tend to be more analytical in their thinking and typically perform well academically. They may have a great ability to memorize large amounts of data, have a large vocabulary, and are detail-oriented.

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What Is The Gray Matter And White Matter

Gray and white matter are two different regions of the central nervous system. In the brain, gray matter refers to the darker, outer portion, while white matter describes the lighter, inner section underneath. In the spinal cord, this order is reversed: The white matter is on the outside, and the gray matter sits within.

Gray matter is primarily composed of neuron somas , and white matter is mostly made of axons wrapped in myelin . The different composition of neuron parts is why the two appear as separate shades on certain scans.

Each region serves a different role. Gray matter is primarily responsible for processing and interpreting information, while white matter transmits that information to other parts of the nervous system.

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