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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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Last Updated on February 13, 2019

10 Things Happy People Do Differently

10 Things Happy People Do Differently

Think being happy is something that happens as a result of luck, circumstance, having money, etc.? Think again.

Happiness is a mindset. And if you’re looking to improve your ability to find happiness, then check out these 10 things happy people do differently.

Happiness is not something ready made. It comes from your own actions. -Dalai Lama

1. Happy people find balance in their lives.

Folks who are happy have this in common: they’re content with what they have, and don’t waste a whole lot of time worrying and stressing over things they don’t. Unhappy people do the opposite: they spend too much time thinking about what they don’t have. Happy people lead balanced lives. This means they make time for all the things that are important to them, whether it’s family, friends, career, health, religion, etc.

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2. Happy people abide by the golden rule.

You know that saying you heard when you were a kid, “Do unto others as you would have them do to you.” Well, happy people truly embody this principle. They treat others with respect. They’re sensitive to the thoughts and feelings of other people. They’re compassionate. And they get treated this way (most of the time) in return.

3. Happy people don’t sweat the small stuff.

One of the biggest things happy people do differently compared to unhappy people is they let stuff go. Bad things happen to good people sometimes. Happy people realize this, are able to take things in stride, and move on. Unhappy people tend to dwell on minor inconveniences and issues, which can perpetuate feelings of sadness, guilt, resentment, greed, and anger.

4. Happy people take responsibility for their actions.

Happy people aren’t perfect, and they’re well aware of that. When they screw up, they admit it. They recognize their faults and work to improve on them. Unhappy people tend to blame others and always find an excuse why things aren’t going their way. Happy people, on the other hand, live by the mantra:

“There are two types of people in the world: those that do and those that make excuses why they don’t.”

5. Happy people surround themselves with other happy people.

happiness surrounding

    One defining characteristic of happy people is they tend to hang out with other happy people. Misery loves company, and unhappy people gravitate toward others who share their negative sentiments. If you’re struggling with a bout of sadness, depression, worry, or anger, spend more time with your happiest friends or family members. Chances are, you’ll find that their positive attitude rubs off on you.

    6. Happy people are honest with themselves and others.

    People who are happy often exhibit the virtues of honesty and trustworthiness. They would rather give you candid feedback, even when the truth hurts, and they expect the same in return. Happy people respect people who give them an honest opinion.

    7. Happy people show signs of happiness.

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    smile

      This one may sound obvious but it’s a key differentiator between happy and unhappy people. Think about your happiest friends. Chances are, the mental image you form is of them smiling, laughing, and appearing genuinely happy. On the flip side, those who aren’t happy tend to look the part. Their posture may be slouched and you may perceive a lack of confidence.

      8. Happy people are passionate.

      Another thing happy people have in common is their ability to find their passions in life and pursue those passions to the fullest. Happy people have found what they’re looking for, and they spend their time doing what they love.

      9. Happy people see challenges as opportunities.

      Folks who are happy accept challenges and use them as opportunities to learn and grow. They turn negatives into positives and make the best out of seemingly bad situations. They don’t dwell on things that are out of their control; rather, they seek solutions and creative ways of overcoming obstacles.

      10. Happy people live in the present.

      While unhappy people tend to dwell on the past and worry about the future, happy people live in the moment. They are grateful for “the now” and focus their efforts on living life to the fullest in the present. Their philosophy is:

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      There’s a reason it’s called “the present.” Because life is a gift.

      So if you’d like to bring a little more happiness into your life, think about the 10 principles above and how you can use them to make yourself better.

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