Right brain vs. left brain: Uncovering myths and misconceptions

For decades, science, medicine, and psychology experts have worked toward a deeper understanding of the human brain. As research continues to uncover the mysteries of the mind, we explore current findings and updated information on how the brain works. 

In this article, we’ll explore how our two hemispheres influence the way the brain functions, as well as the facts, myths, and misconceptions behind the topic of being “right-brained” or “left-brained.”

How does the brain work?

The human brain serves as the central command center for the entirety of the human body and the root of all human intelligence. Weighing approximately three pounds, the brain contains about 100 billion neurons and 100 trillion connections. 

The upper brain, or cerebrum, contains the right and left sides of the brain, known as the right and left hemispheres. Though the two sides are similar in appearance, science has explored the vast difference in how each side of the brain processes information.

The human brain is highly adaptable and constantly reorganizes itself based on life experiences. Much like a computer, the brain processes information from the senses and body and sends messages back to the body.

The left brain and right brain are connected by a thick bundle of nerve fibers called the corpus callosum, with each hemisphere comprising six areas or “lobes” possessing different functions. As scientists further map the brain, our understanding of the specific regions responsible for fundamental functions deepens. 

Current research shows us that, in general, the right side of the brain controls the left side of the body and vice versa. Additionally, it’s understood that the left hemisphere controls speech and abstract thinking in most people, while the right hemisphere is generally responsible for spatial thinking and imagery. 

What is associated with being right-brained vs. left-brained?

According to conjecture stemming from Sperry’s research, some people associate different abilities or personality traits with different sides of the brain, with left-brain associations typically opposed to those of the right side. 

If you have ever encountered the right-brain/left-brain myth, you may have heard the following associated with being “left-brained”:

• Being logical
• Relying on facts
• Showing mathematical talent
• Demonstrating linear thought
• Having skill in sequencing
• Thinking in words

On the other hand, “right-brained” people have often been cast as having the following characteristics or abilities:

• Being intuitive
• Demonstrating holistic thought
• Possessing rhythm in various capacities
• Relying on intuition
• Harnessing their imagination
• Visualizing their feelings

While both sides of the brain work differently, no conclusive evidence supports that personality traits, preferences, or learning styles can determine left-brain vs. right-brain dominance.

Being right-brained or left-brained is a myth

In 2013, a study performed by a team of neuroscientists revealed magnetic resonance imaging of 1,000 people, showing evidence that the human brain doesn’t favor one side over the other. Additionally, contrary to what the right-hemisphere hypothesis predicted, there were no differences between the two brain hemispheres in how they process positive emotions. 

Recent findings show that the brain isn’t limited to utilizing only one side at a time. Whether you engage in logical or creative tasks, both sides of your brain contribute. Interhemispheric switching can happen in many scenarios and for various durations. 

Are certain sides of the brain associated with mental disorders?

The advancement of technology, such as computed axial tomography (CAT) scans, magnetic resonance imaging (MRIs), and electroencephalography (EEG), has enabled researchers to study brain activity in more advanced capacities. 

In one study conducted at the University of Illinois, a research team found evidence that different brain activity patterns correlate with specific types of anxiety. The practitioners categorized 42 undergraduate college students into three cohorts: high anxious apprehension (verbal rumination or worry), high anxious arousal (intense fear or panic), or neither. They then used MRI technology to map which brain areas showed heightened neural activity.

As anticipated, the first cohort demonstrated significant left-brain activity, while the second cohort showed increased right-brain activity. Other trials using EEG technology have discovered that study participants diagnosed with generalized anxiety disorder or obsessive-compulsive disorder (OCD) reveal heightened left-brain activity; on the contrary, people diagnosed with panic disorder or similar conditions sensitive to high stress exhibit significant right-brain activity.

While such studies can provide valuable insight into why people experience conditions like anxiety, worry, or panic, the public should exercise caution in extrapolating in the same way that many others have misinterpreted Sperry’s original split brain theory research. 

Using one hemisphere over the other more frequently does not put someone at risk of developing a mental health condition. 

Maintaining a healthy brain

For the most part, we are unaware of which parts of the brain we use at any time. If you’re concerned about symptoms you’re experiencing that interfere with your ability to lead a productive or fulfilling life, there are many options you can pursue.

Instead of strengthening one side of your brain over the other, promoting interhemispheric switching is often the recommended approach. This may involve participating in tasks that require multiple components of the brain and maintaining the use of the many neural pathways in our minds. 

Engaging in activities such as completing puzzles, learning new skills, or playing instruments might help enhance cognitive abilities. 

A healthy diet can provide the necessary nutrients to promote overall brain health. Likewise, regular physical exercise can benefit your body and support brain function by increasing blood flow and promoting the growth of new brain cells. Also, prioritizing quality sleep and managing stress is beneficial for maintaining a healthy brain. 

Can therapy address a brain imbalance?

In many cases, therapy can be valuable for those struggling with challenges like managing stress, improving communication, or regulating emotions. Many people also seek therapy to confirm or diagnose a mental health condition. There’s no shame in reaching out to a professional for answers; there are many ways to attain help on your terms.

Online therapy platforms like BetterHelp are one option for people who may find it challenging to obtain in-person support due to lack of opportunity, affordability, or time constraints. When using BetterHelp, people can get matched with a licensed counselor skilled in their particular area of need within 48 hours. They can meet via video conference, voice chat, or text anytime. 

In addition to flexibility and cost-effectiveness, research has demonstrated that online therapy delivers a quality of care equal to in-person treatment. 

Talking through concerns with an online therapist may alleviate symptoms and help reframe thoughts that lead to anxious feelings. If therapy alone does not seem to help what feels like a brain imbalance, your online therapist can direct you to other resources (like psychiatrists).

Takeaway

Ultimately, whether you’re tackling a project rooted in logic or working on a creative piece, both hemispheres of your brain actively contribute and offer input. No individual is exclusively left-brained or right-brained, thus creating more possibilities to leverage your strengths and continually expand your intellectual horizons.

Whether you’re interested in improving your overall brain health or discussing symptoms with a licensed professional, the team at BetterHelp is qualified to support you.