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What Does Each Side Of The Brain Control

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Injury In The Right Hemisphere Of The Brain

What’s the Difference Between the Right Brain and Left 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

What Parts Of The Brain Control The Parts Of Your Body

MayoClinic.com describes the brain as containing billions of nerve cells arranged in patterns that coordinate thought, emotion, behavior, movement and sensation. Each part of the brain is responsible for a specific function, and they all work together. The main parts of the brain include the cerebrum, cerebellum, limbic system, brain stem and pituitary gland

If you are experiencing serious medical symptoms, seek emergency treatment immediately.

What Research Says About Brain Functions And Dominance

Several studies have debunked the old brain theory and straightened out information regarding hemispheric differences. Recent research has shown that the human brain has a symmetrical structure for a reason everyone uses both brain regions equally unless one side has been damaged due to a brain injury.

After studying the brains of 1,000 people using an MRI, a 2013 scientific article published by PLOS One concluded that there’s no such thing as a dominant brain because a person uses both sides of their brain, depending on the task that needs to be completed.

How the left hemisphere of the brain emerged as more dominant than the right stemmed from the split-brain study of neuropsychologist Roger W. Sperry in the 1960s, which won him the Nobel Prize. According to PLOS Biology, the study involved patients who had undergone split-brain surgery, wherein the corpus callosum connecting the two hemispheres was removed to address a type of severe epilepsy. After testing each hemisphere, the language centres were revealed in the left and emotional and nonverbal functions in the right.

However, Sperry’s findings were exaggerated by many ill-founded publications that immortalised the popular belief that the right hemisphere is responsible for creativity in the world of art, business and education.

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How Does The Brain Work

The brain sends and receives chemical and electrical signals throughout the body. Different signals control different processes, and your brain interprets each. Some make you feel tired, for example, while others make you feel pain.

Some messages are kept within the brain, while others are relayed through the spine and across the bodys vast network of nerves to distant extremities. To do this, the central nervous system relies on billions of neurons .

Crossing The Nerve Pathways: Pyramidal Decussation

How to Sync The 2 Hemispheres of Your Brain for Better ...

To begin the explanation, we have to resort to the concept of decussation or chiasma .

We call pyramidal decussation the crossing made by the pyramidal fibers, passing the nerve fibers from the left side of the brain to the right half body and those from the right side to the left.

This therefore implies that the part of the brain that controls our right part is the left hemisphere, being the lesion of the left hemisphere the one that could cause paralysis and other conditions on the right side of the body.

However, despite the fact that most nerve fibers cross the contralateral hemibody, between 15 and 20% of nerve fibers do not pass through decussation, continuing to function ipsilaterally .

From this decussation, two large bundles of neurons emerge, the anterior corticospinal and the lateral corticospinal . The lateral corticospinal is associated with the fine movement of the most distal parts of the body, such as the fingers, allowing skills such as writing or manipulating objects.

The ventral or anterior, although it does not decline in the pyramidal decussation of the medulla oblongata, largely ends up doing so within the spinal cord itself, reducing the percentage of fibers that remain ipsilateral to around 2%. It takes care of the proximal areas of the extremities, trunk and neck.

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Left Brain Characteristics And Functions

Individuals with a dominant left brain are considered relatively more intelligent than individuals with a dominant right brain. Their approach is analytical, sequential, logical, objective, and rational, as a result of which they get into the details of the subject, analyze it, and come to a rational conclusion. In contrast, right-brained people just grasp the subject halfheartedly, as their attention always lingers on how things are happening, instead of what things are happening. While left-brained people rely more on verbal aspect of the subject, their right-brained counterparts rely more on the visual aspect.

Like we said earlier, the right side of our body is wired to the left brain, while the left side of our body is wired to the right brain. It means our right hand is commanded by the left hemisphere of our brain, while our left hand is commanded by the right hemisphere of the brain. Similarly, our right eye is guided by the left brain, and the left eye by the right brain.

Words and language are given utmost importance by the left side of the human brain. It excels in analytical subjects such as math and science. Owing to its brilliant ability to comprehend various subjects, it has a crucial role to play when it comes to learning new things. As it is sequential, it facilitates order perception with immense ease. One of the most important functions of the left brain is to form strategies using analytical and logical skills.

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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Some Key Neurotransmitters At Work

Neurotransmitters are chemicals that brain cells use to talk to each other. Some neurotransmitters make cells more active while others block or dampen a cell’s activity .

Acetylcholine is an excitatory neurotransmitter because it generally makes cells more excitable. It governs muscle contractions and causes glands to secrete hormones. Alzheimers disease, which initially affects memory formation, is associated with a shortage of acetylcholine.

Glutamate is a major excitatory neurotransmitter. Too much glutamate can kill or damage neurons and has been linked to disorders including Parkinson’s disease, stroke, seizures, and increased sensitivity to pain.

GABA is an inhibitory neurotransmitter that helps control muscle activity and is an important part of the visual system. Drugs that increase GABA levels in the brain are used to treat epileptic seizures and tremors in patients with Huntingtons disease.

Serotonin is a neurotransmitter that constricts blood vessels and brings on sleep. It is also involved in temperature regulation. Low levels of serotonin may cause sleep problems and depression, while too much serotonin can lead to seizures.

Dopamine is an inhibitory neurotransmitter involved in mood and the control of complex movements. The loss of dopamine activity in some portions of the brain leads to the muscular rigidity of Parkinsons disease. Many medications used to treat behavioral disorders work by modifying the action of dopamine in the brain.

The Biggest Part: The Cerebrum

How Does The Brain Work?

The biggest part of the brain is the cerebrum. The cerebrum is the thinking part of the brain and it controls your voluntary muscles the ones that move when you want them to. So you need your cerebrum to dance or kick a soccer ball.

You need your cerebrum to solve math problems, figure out a video game, and draw a picture. Your memory lives in the cerebrum both short-term memory and long-term memory . The cerebrum also helps you reason, like when you figure out that you’d better do your homework now because your mom is taking you to a movie later.

The cerebrum has two halves, with one on either side of the head. Scientists think that the right half helps you think about abstract things like music, colors, and shapes. The left half is said to be more analytical, helping you with math, logic, and speech. Scientists do know for sure that the right half of the cerebrum controls the left side of your body, and the left half controls the right side.

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Left Brain Vs Right Brain: Characteristics Chart

Neuroscientists and psychologists worldwide have put considerable effort into investigating the characteristics and functions of the left and right sides of the brain.

Though the two sides of a humans brain look alike, they process information very differently. Over the years, studies have consistently shown that there are many differences between the left brain and the right brain. However, although the two halves work in two contrasting styles, they are very much interconnected.

In this Custom Writing article, you will learn everything about the left and right brain hemispheres, including the differences in how they function.

The Two Brain Hemispheres

The two brain hemispheres are complimentary, and they have minor functional differences between the right and left hemisphere. It hasnt been easy to discern the differences between the two. It is known that the right side of the brain controls the left side of the body, and the left side of the brain controls nearly the entire right side of the body. Each of the hemispheres specializes in certain functions, and this specialization is a privilege of being human. This may be because language and logic need more orderly and sophisticated thought processes.

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Tips For Boosting Creativity

If youre trying to nourish your creative side, here are a few ways to get started:

Read about and listen to the creative ideas of others. You might discover the seed of an idea you can grow, or set your own imagination free.

Try something new. Take up a creative hobby, such as playing an instrument, drawing, or storytelling. A relaxing hobby can help your mind wander to new places.

Look within. This can help you gain a deeper understanding of yourself and what makes you tick. Why do you gravitate toward certain activities and not others?

Keep it fresh. Break your set patterns and go outside your comfort zone. Take a trip to a place youve never been. Immerse yourself in another culture. Take a course in a subject you havent studied before.

Even something as creative as music takes time, patience, and practice. The more you practice any new activity, the more your brain adapts to the new information.

What Are The Lobes Of The Brain

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What we know as lobes of the brain consists of a classification by plots of the cerebral cortex that allows mapping the main areas of nerve activity. These are not radically separate areas from each other, but they are relatively easy to distinguish one from the other if we look at the folds and different fissures of the brain.

These plots are the lobes of the brain, and below you can read their most basic aspects, taking into account that each cerebral hemisphere has the same number, types and distribution of lobes.

When we think about the lobes of the brain, we can make the mistake of imagining a series of separate or differentiated structures. Well, it is important to note that there are no intermediate barriers and that the four large areas that make up the brain lobes always work in harmony, constantly connected and sharing information.

On the other hand, the fact that each brain lobe has a series of its own characteristics does not mean that each structure almost exclusively controls a certain task. Many activities and processes overlap across different brain regions.

Thus, the functioning of one region could not take place effectively without the presence of another. Hence, sometimes, the brain damage caused in a specific area, can be compensated with what other regions can carry out with greater or lesser effectiveness.

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Achieving A Healthy Brain

While there’s no evidence to prove that people who are right-handed have a better cognitive function and those who are left-handed are more creative, everybody can improve their brain functions if they have the will to do it.

Researchers found that specific thinking exercises can improve the brain cells in both hemispheres and promote a healthy brain. If you want to learn holistic thinking and become more creative, dabbling in colouring books, practising mindfulness and engaging in physical exercises will improve the performance of your cerebral cortex. On the other hand, solving puzzles, writing, solving math problems and reading a lot will enhance logical thinking and speech production.

Art therapy, brain gymand educational kinesiology can also boost brain health as these modalities promote the fun and advantages of lifelong learning.

Originally published on Aug 31, 2008

Learn more about Psychology here.Or find best practitioners of Psychology near you.

The Architecture Of The Brain

The brain is like a committee of experts. All the parts of the brain work together, but each part has its own special properties. The brain can be divided into three basic units: the forebrain, the midbrain, and the hindbrain.

The hindbrain includes the upper part of the spinal cord, the brain stem, and a wrinkled ball of tissue called the cerebellum . The hindbrain controls the bodys vital functions such as respiration and heart rate. The cerebellum coordinates movement and is involved in learned rote movements. When you play the piano or hit a tennis ball you are activating the cerebellum. The uppermost part of the brainstem is the midbrain, which controls some reflex actions and is part of the circuit involved in the control of eye movements and other voluntary movements. The forebrain is the largest and most highly developed part of the human brain: it consists primarily of the cerebrum and the structures hidden beneath it .

When people see pictures of the brain it is usually the cerebrum that they notice. The cerebrum sits at the topmost part of the brain and is the source of intellectual activities. It holds your memories, allows you to plan, enables you to imagine and think. It allows you to recognize friends, read books, and play games.

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In What Part Of The Nervous System Is It Produced

The place where the pyramidal decussation occurs, that is, the point from which where the pyramidal nerve bundles on the left side of the body will cross and enter the right hemisphere and those on the right hemisphere on the left, is located in the brain stem.

In the medulla oblongata they can find the pyramids, the bundles of nerve fibers that are going to carry motor information from the brain to the rest of the body. And it is also in this structure where the pyramidal decussation point is found. Specifically, it can be found in the lowest part of the medulla oblongata, putting this structure in contact with the spinal cord.

Blood Supply To The Brain

How to use both sides of your Brain

Two sets of blood vessels supply blood and oxygen to the brain: the vertebral arteries and the carotid arteries.

The external carotid arteries extend up the sides of your neck, and are where you can feel your pulse when you touch the area with your fingertips. The internal carotid arteries branch into the skull and circulate blood to the front part of the brain.

The vertebral arteries follow the spinal column into the skull, where they join together at the brainstem and form the basilar artery, which supplies blood to the rear portions of the brain.

The circle of Willis, a loop of blood vessels near the bottom of the brain that connects major arteries, circulates blood from the front of the brain to the back and helps the arterial systems communicate with one another.

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The brain is the vital organ of the central nervous system. It is a complex organ consist of billions of interconnected neurons and glia. The brain has two sides and separated into unique lobes. Each lobe has a specific set of functions.

Although the brain is a complex organ a hardworking one with a hundred billion neurons, it surprisingly weighs only three pounds. It makes up around 2% of the human weight and only takes up about 20% of the bodys total energy.

The brain, being an intricate organ, performs a lot of functions. The two sides of the brain communicate with one another to perform all vital bodily processes. Both the left and the right side of the brain look very much alike but they too share some differences, especially in processing information.

Lack of integration between the different components of the brain could result in some forms of impairment.

The human brain has the ability to recognize itself. It has the ability to learn and adapt to change. Each side of the brain has a distinct function, which affects the persons ability to learn and adapt.

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