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Why Introverts Are Introverts? Because Their Brains Are Different

Why Introverts Are Introverts? Because Their Brains Are Different

You prefer to curl up and read a book by yourself over going to a flashy social event. You like the company of one close friend rather than a group of many rowdy people. Once more you prefer to stay on the safe side than take risks. Does this sound familiar? If so, then you are probably an introvert. You may already know this but what you may not be aware of is that there are physical differences in your brain that make you prefer quiet activities over those that are highly energized.

Carl Jung’s studies

It was Carl Jung who in the 1920s coined the terms introvert and extrovert. He did so to describe contrasting personality types and to explain why different people were energized in distinct ways. He hypothesized that extroverts gained their energy from their social interactions and eternal environments and tended to feel uncomfortable and anxious when they found themselves alone.

Introverts, on the other hand, Jung explained, are able to replenish their energy levels when they are in quiet environments. Unlike extroverts they find socializing and busy environments overstimulating and too demanding.

Dr. Laney clarifies in her book, The Hidden Gifts of the Introverted Child that “introversion and extroversion are not black and white. No one is completely one way or another – we all must function at times on either  side of the continuum”.

Introversion and extroversion are at the opposite ends of the same spectrum. Everybody moves up and down the spectrum depending on external and internal factors, however, a person tends to prefer one personality type over the other.

The Dopamine difference

A major difference between the brains of introverts and extroverts is the way they react to the neurotransmitter dopamine.

Dopamine is a chemical that is released in the brain. It gives a person their motivation to achieve external goals and receive external rewards. For example, dopamine may motivate an individual to earn more money, increase their circle of friends, attract a good looking partner or advance to a higher role at work. When dopamine is released all of us become more alert to our surroundings, more talkative and more motivated to undertake activities that may be perceived as risky.

Introverts and extroverts have equal amounts of dopamine in their brains, however, the difference between these two categories of people is the activity of the dopamine reward network. The dopamine reward network is more active and dynamic in the brains of extroverts as Scott Barry Kaufman, the Scientific Director of The Imagination Institute says. When an extrovert anticipates a social event, for example, they feel good and energized, whereas the introvert will feel overstimulated.

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Acetylcholine and Introverts

Christine Fonseca writes in her book Quiet Kids: Help your introverted child succeed in an extroverted world that introverts prefer to rely on a different neurotransmitter called acetylcholine.

Acetylcholine is related to pleasure, just like dopamine, however acetylcholine makes a person feel good when they turn inward. It gives a person the skill to reflect and focus solely on an individual task for an extended period of time. As it is simpler to turn inwards when there is limited external stimulation, introverts opt for a calm environment.

Introverts prefer one side of the nervous system over the other

The nervous system is divided into two distinct parts: there is the sympathetic side which is related to the “fight, fright, or flight” response; and the parasympathetic side. The parasympathetic side allows us to rest and digest.

When the sympathetic side is stimulated the body prepares for action; adrenaline is released, glucose energizes the muscles and the amount of oxygen in the body increases. The thinking mechanisms in the brain are put on hold. Dopamine increases alertness in the rear of the brain.

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When the parasympathetic side of the brain is in gear; muscles relax, energy is stored and food is metabolized. Blood flow and alertness in the front of the brain increase as acetylcholine is released.

Although extroverts and introverts use both sides of the nervous system, various times introverts tend to prefer to use the parasympathetic side. This allows introverts to be calm and to act in a slow and measured way.

Why introverts tend to overthink

When information from the external world is received by an extroverts brain it travels via a short pathway that goes through the areas of the brain where touch, taste, sound and sight are processed.

When introverts receive stimulus from the outside world the pathway that the information travels through is a lot longer. The information goes through many areas of the brain including:

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  1. The right front insular,
  2. Broca’s area,
  3. The right and left front lobes and,
  4. The left hippocampus.

The right front insular is an area involved with empathy, emotional thought and self-reflection. The Broca’s area activates self-talk and plans speech. The right and left front lobs, plan and select ideas and actions. The left hippocampus decides what things are personal and places them in long-term memories.

The long journey that the information takes when an introvert receives stimulus from the external world is the reason that introverts take longer to speak, react and make decisions.

Introverts have more gray matter in the front of their brains

study published in the Journal of Neuroscience discovered that introverts have larger, thicker gray matter in their prefrontal cortex. The prefrontal cortex is the place in the brain that is linked to abstract thought and decision-making. Extroverts, on the other hand, have thinner gram matter in the same area.

What does this mean? It means that introverts devote more of their energy and resources to abstract thought while extroverts have the propensity to live in the moment.

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Summation

Things may now make more sense to you, as an introvert. You can now understand that there are physical differences in your brain that make you prefer peaceful activities and self-reflection over highly energized situations.

Featured photo credit: Introvert Dear via introvertdear.com

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Rebecca Beris

Rebecca is a wellness and lifestyle writer at Lifehack.

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Last Updated on December 10, 2019

5 Smart Reasons to Start Journal Writing Today

5 Smart Reasons to Start Journal Writing Today

Here’s the truth: your effectiveness at life is not what it could be. You’re missing out.

Each day passes by and you have nothing to prove that it even happened. Did you achieve something? Go on a date? Have an emotional breakthrough? Who knows?

But what you do know is that you don’t want to make the same mistakes that you’ve made in the past.

Our lives are full of hidden gems of knowledge and insight, and the most recent events in our lives contain the most useful gems of all. Do you know why? It’s simple, those hidden lessons are the most up to date, meaning they have the largest impact on what we’re doing right now.

But the question is, how do you get those lessons? There’s a simple way to do it, and it doesn’t involve time machines:

Journal writing.

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Improved mental clarity, the ability to see our lives in the big picture, as well as serving as a piece of evidence cataloguing every success we’ve ever had; we are provided all of the above and more by doing some journal writing.

Journal writing is a useful and flexible tool to help shed light on achieving your goals.

Here’s 5 smart reasons why you should do journal writing:

1. Journals Help You Have a Better Connection with Your Values, Emotions, and Goals

By journaling about what you believe in, why you believe it, how you feel, and what your goals are, you understand your relationships with these things better. This is because you must sort through the mental clutter and provide details on why you do what you do and feel what you feel.

Consider this:

Perhaps you’ve spent the last year or so working at a job you don’t like. It would be easy to just suck it up and keep working with your head down, going on as if it’s supposed to be normal to not like your job. Nobody else is complaining, so why should you, right?

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But a little journal writing will set things straight for you. You don’t like your job. You feel like it’s robbing you of happiness and satisfaction, and you don’t see yourself better there in the future.

The other workers? Maybe they don’t know, maybe they don’t care. But you do, you know and care enough to do something about it. And you’re capable of fixing this problem because your journal writing allows you to finally be honest with yourself about it.

2. Journals Improve Mental Clarity and Help Improve Your Focus

If there’s one thing journal writing is good for, it’s clearing the mental clutter.

How does it work? Simply, whenever you have a problem and write about it in a journal, you transfer the problem from your head to the paper. This empties the mind, allowing allocation of precious resources to problem-solving rather than problem-storing.

Let’s say you’ve been juggling several tasks at work. You’ve got data entry, testing, e-mails, problems with the boss, and so on—enough to overwhelm you—but as you start journal writing, things become clearer and easier to understand: Data entry can actually wait till Thursday; Bill kindly offered earlier to do my testing; For e-mails, I can check them now; the boss is just upset because Becky called in sick, etc.

You become better able to focus and reason your tasks out, and this is an indispensable and useful skill to have.

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3. Journals Improve Insight and Understanding

As a positive consequence of improving your mental clarity, you become more open to insights you may have missed before. As you write your notes out, you’re essentially having a dialogue with yourself. This draws out insights that you would have missed otherwise; it’s almost as if two people are working together to better understand each other. This kind of insight is only available to the person who has taken the time to connect with and understand themselves in the form of writing.

Once you’ve gotten a few entries written down, new insights can be gleaned from reading over them. What themes do you see in your life? Do you keep switching goals halfway through? Are you constantly dating the same type of people who aren’t good for you? Have you slowly but surely pushed people out of your life for fear of being hurt?

All of these questions can be answered by simply self-reflecting, but you can only discover the answers if you’ve captured them in writing. These questions are going to be tough to answer without a journal of your actions and experiences.

4. Journals Track Your Overall Development

Life happens, and it can happen fast. Sometimes we don’t take the time to stop and look around at what’s happening to us at each moment. We don’t get to see the step-by-step progress that we’re making in our own lives. So what happens? One day it’s the future, and you have no idea how you’ve gotten there.

Journal writing allows you to see how you’ve changed over time, so you can see where you did things right, and you can see where you took a misstep and fell.

The great thing about journals is that you’ll know what that misstep was, and you can make sure it doesn’t happen again—all because you made sure to log it, allowing yourself to learn from your mistakes.

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5. Journals Facilitate Personal Growth

The best thing about journal writing is that no matter what you end up writing about, it’s hard to not grow from it. You can’t just look at a past entry in which you acted shamefully and say “that was dumb, anyway!” No, we say “I will never make a dumb choice like that again!”

It’s impossible not to grow when it comes to journal writing. That’s what makes journal writing such a powerful tool, whether it’s about achieving goals, becoming a better person, or just general personal-development. No matter what you use it for, you’ll eventually see yourself growing as a person.

Kickstart Journaling

How can journaling best be of use to you? To vent your emotions? To help achieve your goals? To help clear your mind? What do you think makes journaling such a useful life skill?

Know the answer? Then it’s about time you reap the benefits of journal writing and start putting pen to paper.

Here’s what you can do to start journaling:

Featured photo credit: Jealous Weekends via unsplash.com

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