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Science Says Silence Is Much More Important To Our Brains Than We Think

Science Says Silence Is Much More Important To Our Brains Than We Think

In 2011, the Finnish Tourist Board ran a campaign that used silence as a marketing ‘product’. They sought to entice people to visit Finland and experience the beauty of this silent land. They released a series of photographs of single figures in the nature and used the slogan “Silence, Please”. A tag line was added by Simon Anholt, an international country branding consultant, “No talking, but action.”

Eva Kiviranta the manager of the social media for VisitFinland.com said: “We decided, instead of saying that it’s really empty and really quiet and nobody is talking about anything here, let’s embrace it and make it a good thing”.

Finland may be on to something very big. You could be seeing the very beginnings of using silence as a selling point as silence may be becoming more and more attractive. As the world around becomes increasingly loud and cluttered you may find yourself seeking out the reprieve that silent places and silence have to offer. This may be a wise move as studies are showing that silence is much more important to your brains than you might think.

Regenerated brain cells may be just a matter of silence.

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     A 2013 study on mice published in the journal Brain, Structure and Function used differed types of noise and silence and monitored the effect the sound and silence had on the brains of the mice.[1] The silence was intended to be the control in the study but what they found was surprising. The scientists discovered that when the mice were exposed to two hours of silence per day they developed new cells in the hippocampus. The hippocampus is a region of the brain associated with memory, emotion and learning.

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    The growth of new cells in the brain does not necessarily translate to tangible health benefits. However, in this instance, researcher Imke Kirste says that the cells appeared to become functioning neurons.

    “We saw that silence is really helping the new generated cells to differentiate into neurons, and integrate into the system.”

    In this sense silence can quite literally grow your brain.

    The brain is actively internalizing and evaluating information during silence

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      A 2001 study defined a “default mode” of brain function that showed that even when the brain was “resting” it was perpetually active internalizing and evaluating information.

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      Follow-up research found that the default mode is also used during the process of self-reflection. In 2013, in Frontiers in Human Neuroscience, Joseph Moran et al. wrote, the brain’s default mode network “is observed most closely during the psychological task of reflecting on one’s personalities and characteristics (self-reflection), rather than during self-recognition, thinking of the self-concept, or thinking about self-esteem, for example.

      “When the brain rests it is able to integrate internal and external information into “a conscious workspace,” said Moran and colleagues.

      When you are not distracted by noise or goal-orientated tasks, there appears to be a quiet time that allows your conscious workspace to process things. During these periods of silence, your brain has the freedom it needs to discover its place in your internal and external world.

      The default mode helps you think about profound things in an imaginative way.

      As Herman Melville once wrote,[2]

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      “All profound things and emotions of things are preceded and attended by silence.”

      Silence relieves stress and tension.

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        It has been found that noise can have a pronounced physical effect on our brains resulting in elevated levels of stress hormones. The sound waves reach the brain as electrical signals via the ear. The body reacts to these signals even if it is sleeping. It is thought that the amygdalae (located in the temporal lobes of the brain) which is associated with memory formation and emotion is activated and this causes a release of stress hormones. If you live in a consistently noisy environment that you are likely to experience chronically elevated levels of stress hormones.

        A study that was published in 2002 in Psychological Science (Vol. 13, No. 9) examined the effects that the relocation of Munich’s airport had on children’s health and cognition. Gary W. Evans, a professor of human ecology at Cornell University notes that children who are exposed to noise develop a stress response that causes them to ignore the noise. What is of interest is that these children not only ignored harmful stimuli they also ignored stimuli that they should be paying attention to such as speech. 

        “This study is among the strongest, probably the most definitive proof that noise – even at levels that do not produce any hearing damage – causes stress and is harmful to humans,” Evans says.[3]

        Silence seems to have the opposite effect of the brain to noise. While noise may cause stress and tension silence releases tension in the brain and body. A study published in the journal Heart discovered that two minutes of silence can prove to be even more relaxing than listening to “relaxing” music. They based these findings of changes they noticed in blood pressure and blood circulation in the brain.[4]

        Silence replenishes our cognitive resources.

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          The effect that noise pollution can have on cognitive task performance has been extensively studied. It has been found that noise harms task performance at work and school. It can also be the cause of decreased motivation and an increase in error making.  The cognitive functions most strongly affected by noise are reading attention, memory and problem solving.

          Studies have also concluded that children exposed to households or classrooms near airplane flight paths, railways or highways have lower reading scores and are slower in their development of cognitive and language skills.

          But it is not all bad news. It is possible for the brain to restore its finite cognitive resources. According to the attention restoration theory when you are in an environment with lower levels of sensory input the brain can ‘recover’ some of its cognitive abilities. In silence the brain is able to let down its sensory guard and restore some of what has been ‘lost’ through excess noise.[5]

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          Summation

          Traveling to Finland may just well be on your list of things to do. There you may find the silence you need to help your brain. Or, if Finland is a bit out of reach for now, you could simply take a quiet walk in a peaceful place in your neighborhood. This might prove to do you and your brain a world of good.

          Featured photo credit: Angelina Litvin via unsplash.com

          Reference

          More by this author

          Rebecca Beris

          Rebecca is a wellness and lifestyle writer at Lifehack.

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          Published on June 30, 2020

          What Is Unconscious Bias (And How to Reduce It for Good)

          What Is Unconscious Bias (And How to Reduce It for Good)

          Many conversations are being held nowadays regarding unconscious bias, but what does it really mean and how can it affect your life and the people around you? With many types of biases, it can get quite confusing. In this article, we’ll touch on cognitive bias, and then zero in on unconscious bias. Both types of biases have an immediate impact on your life because they relate to how you and others think about yourself and other people.

          If you want to protect your relationships and make good decisions about other people, you need to know what these biases mean[1]. Once we have clarity about that, we can explore in more depth unconscious bias and how to address it[2].

          Cognitive Bias

          Let’s start with cognitive bias[3], a predictable pattern of mental errors that result in us misperceiving reality and, as a result, deviating away from the most likely way of reaching our goals[4].

          These mental blind spots impact all areas of our life, from health to relationships and even shopping, as a study recently revealed[5]. In other words, from the perspective of what is best for us as individuals, falling for a cognitive bias always harms us by lowering our probability of getting what we want.

          Cognitive biases have to do with judgment, not mood. Ironically, cognitive biases — such as the optimism bias and overconfidence effect — more often lead to positive moods. Of course, the consequence of falling into cognitive biases, once discovered, usually leaves us in a bad mood due to the disastrous results of these dangerous judgment errors.

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          Unconscious Bias

          Unconscious bias is different from cognitive bias. Also known as implicit bias, it refers to unconscious forms of discrimination and stereotyping based on race, gender, sexuality, ethnicity, ability, age, and so on[6]. Despite cognitive biases sometimes leading to discriminatory thinking and feeling patterns, these are two separate and distinct concepts.

          Cognitive biases are common across humankind and relate to the particular wiring of our brains, while unconscious bias relates to perceptions between different groups and are specific for the society in which we live. For example, I bet you don’t care or even think about whether someone is a noble or a commoner, yet that distinction was fundamentally important a few centuries ago across Europe. To take another example, most people in the US don’t have strong feelings about Sunni vs. Shiite Muslims, yet this distinction is incredibly meaningful in many parts of the world.

          Unconscious Bias and Discriminatory Behavior

          Organizations often bring me in as a speaker on diversity and inclusion to address potential unconscious discriminatory behavior. When I share in speeches that black Americans suffer from police harassment and violence at a much higher rate than white people, some participants (usually white) occasionally try to defend the police by claiming that black people are more violent and likely to break the law than whites. They thus attribute police harassment to the internal characteristics of black people (implying that it is deserved), and not to the external context of police behavior.

          In reality – as I point out in my response to these folks – research shows that black people are harassed and harmed by police at a much higher rate for the same kind of activity. A white person walking by a cop, for example, is statistically much less likely to be stopped and frisked than a black one[7].

          At the other end of things, a white person resisting arrest is much less likely to be violently beaten than a black one. In other words, statistics show that the higher rate of harassment and violence against black Americans by police is due to the prejudice of the police officers, at least to a large extent[8].

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          However, I am careful to clarify that this discrimination is not necessarily intentional. Sometimes, it indeed is deliberate, with white police officers consciously believing that black Americans deserve much more scrutiny than whites. At other times, the discriminatory behavior results from unconscious, implicit thought processes that the police officer would not consciously endorse[9].

          After becoming aware that unconscious bias does exist, the next step would be learning how to recognize it in order to reduce it. I’ve outlined three crucial points to keep in mind below while further exploring the unconscious prejudice discussed above.

          How to Reduce Unconscious Bias

          Remember these three important points if you want to work on reducing your unconscious bias.

          1. Unconscious Bias is a Systemic Issue

          When we understand that unconscious bias is ultimately a systemic issue, we understand that internal cultures need to be checked and addressed first.

          Interestingly, research shows that many black police officers have an unconscious prejudice against other black people, perceiving them in a more negative light than white people when evaluating potential suspects. This unconscious bias carried by many — not all — black police officers helps show that such prejudices come – at least to a significant extent – from internal cultures within police departments, rather than pre-existing racist attitudes present before someone joins a police department.

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          Such cultures are perpetuated by internal norms, policies, and training procedures, and any police department wishing to address unconscious bias needs to address internal culture first and foremost, rather than attributing racism to individual officers.

          In other words, instead of saying it’s a few bad apples in a barrel of overall good ones, the key is recognizing that unconscious bias is a systemic issue, and the structure and joints of the barrel needs to be fixed[10].

          2. There Is No Shame in Unconscious Bias

          Another crucial thing that needs to be highlighted is that there is no shame or blame in unconscious bias as it’s not stemming from any fault in the individual. This no-shame approach decreases the fight, freeze, or flight defensive response among reluctant audiences, helping them hear and accept the issue.

          Unconscious bias is prevalent and often doesn’t match our conscious values. Everyone holds unconscious beliefs and prejudices stemming from our tendency to categorize people into social groups. This developed naturally as a way for our ancestors to quickly size up a possible threat. Unfortunately, it doesn’t translate well in modern life.

          3. It Takes a Sustained Effort to Prevent and Protect Against Unconscious Bias

          After being presented with additional statistics and discussion of unconscious bias, the issue is generally settled. Still, from their subsequent behavior it’s clear that some of these audience members don’t immediately internalize this evidence. It’s much more comforting for their gut reactions to believe that police officers are right and anyone targeted by police deserves it; in turn, they are highly reluctant to accept the need to focus more efforts and energy on protecting black Americans from police violence due to the structural challenges facing these groups.

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          The issue of unconscious bias doesn’t match their intuitions, so they reject this concept, despite extensive and strong evidence for its pervasive role in policing. It takes a series of subsequent follow-up conversations and interventions to move the needle. A single training is almost never sufficient, both in my experience and according to research[11].

          Conclusion

          The examples and points raised illustrate broader patterns you need to follow to recognize unconscious bias. Only by doing so will you be able to determine if, and what type of, intervention is needed to address it.

          Unfortunately, our gut reactions lead us to make poor judgment choices when we simply follow our intuitions. Unconscious biases are systemic and need to be addressed in order to make the best decisions[12].

          We need to learn about the kind of problems that result from unconscious bias. Then, you need to develop the right mental habits to help you make the best choices[13]. A one-time training is insufficient for doing so. It takes a long-term commitment and constant discipline and efforts to overcome unconscious bias, so get started now.

          More Tips on Overcoming Unconscious Bias

          Featured photo credit: M.T ElGassier via unsplash.com

          Reference

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