Teens: This is how social media affects your brain
Researchers at UCLA's Brain Mapping Center found that when teenagers' photos get lots of "likes" on social media apps, such as Instagram, their brains respond in a similar way to seeing loved ones or winning money.
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Photos: How social media affects the teenage brain
Thirty-two teenagers took part in the experiment, with brain scans showing how their nucleus accumbens -- the part of their brain linked to rewards -- became especially active.
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Photos: How social media affects the teenage brain
Being appreciated on social media, through "likes," was seen in brain scans to activate the reward centers of the brain, pictured.
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Photos: How social media affects the teenage brain
Reward circuitry is thought to be particularly sensitive during adolescence, which may partly explain why teenagers are such avid social media users.
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Photos: How social media affects the teenage brain
The teenagers were shown a bespoke version of Instagram during the experiment where the "likes" they saw weren't given by their peers, but instead assigned by the research team.
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Photos: How social media affects the teenage brain
The teens were shown "neutral" photos showing things like food and friends, and "risky" photos depicting cigarettes and alcohol, pictured. The study found that teens were more likely to "like" popular photos, regardless of the type of image.
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Photos: How social media affects the teenage brain
While social media has the potential to influence teenagers in good ways, it's important for parents to be aware of who their teens are interacting with online, says Lauren Sherman, lead author of the study.
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Photos: How social media affects the teenage brain
Researchers at UCLA's Brain Mapping Center found that when teenagers' photos get lots of "likes" on social media apps, such as Instagram, their brains respond in a similar way to seeing loved ones or winning money.
Hide Caption
1 of 7
Photos: How social media affects the teenage brain
Thirty-two teenagers took part in the experiment, with brain scans showing how their nucleus accumbens -- the part of their brain linked to rewards -- became especially active.
Hide Caption
2 of 7
Photos: How social media affects the teenage brain
Being appreciated on social media, through "likes," was seen in brain scans to activate the reward centers of the brain, pictured.
Hide Caption
3 of 7
Photos: How social media affects the teenage brain
Reward circuitry is thought to be particularly sensitive during adolescence, which may partly explain why teenagers are such avid social media users.
Hide Caption
4 of 7
Story highlights
A study found that teenagers are highly influenced by 'likes' on social media
Receiving 'likes' activates the reward centers in the brain, similar to winning a prize
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(CNN)Whether you're on Facebook, Instagram, Snapchat, What's App or Twitter, the way you communicate with friends today is changing.
Keeping in touch is no longer about face to face, but instead screen to screen, highlighted by the fact that more than 1 billion people are using Facebook every day.
Social media has become second nature -- but what impact is this having on our brain?
Reward circuitry
In a recent study, researchers at the UCLA brain mapping center used an fMRI scanner to image the brains of 32 teenagers as they used a bespoke social media app resembling Instagram. By watching the activity inside different regions of the brain as the teens used the app, the team found certain regions became activated by "likes", with the brain's reward center becoming especially active.
Americans devote more than 10 hours a day to screen time, and growing
"When teens lea that their own pictures have supposedly received a lot of likes, they show significantly greater activation in parts of the brain's reward circuitry," says lead author Lauren Sherman. "This is the same group of regions responding when we see pictures of a person we love or when we win money."
The teenagers were shown more than 140 images where 'likes' were believed to from their peers, but were in fact assigned by the research team.
Scans revealed that the nucleus accumbens, a part of the brain's reward circuitry, was especially active when teens saw a large number of likes on their own photos, which could inspire them to use social media more often.
Peer influence
As part of the experiment, participants were also shown a range of "neutral" photos showing things like food and friends, and "risky" photos depicting cigarettes and alcohol. But the type of image had no impact on the number of "likes" given by the teens. they were instead more likely to 'like' the more popular photos, regardless of what they showed. This could lead to both a positive and negative influence from peers online.
Sherman believes these results could have important implications among this age group.
"Reward circuitry is thought to be particularly sensitive in adolescence," says Sherman, "It could be explaining, at least in part, why teens are such avid social media users."
Read: What parents need to know when kids are on social media
Social leaing
Adolescence is a period that is very important for social leaing, which could explain why teens are often more tuned in to what's going on in their respective cultures. With the rise of social media, Sherman thinks we may even be leaing to read likes and shares instead of facial expressions.
"Before, if you were having a face to face interaction everything is qualitative. You use someone's gestures or facial expressions, that sort of thing, to see how effective your message is," she says.
"Now if you go online, one of the ways that you gauge the effectiveness of your message is in the number of likes, favorites or retweets, and this is something that's really different and unique about online interaction."
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However, the study may not be applicable to everyone, according to Dr. Iroise Dumontheil, at Birkbeck University.
"[The study] only has adolescents and so they can't really claim anything specific about whether it's adolescents who react to this differently compared to adults."
Read: Teens spend nine hours a day using media, report says
Changing the brain
Dumontheil does, however, concur that social media is affecting our brain, particularly its plasticity, which is the way the brain grows and changes after experiencing different things.
"Whenever you lea something new or you experience something, it's encoded in your brain, and it's encoded by subtle changes in the strength of connections between neurons," says Dumontheil.
For example, one study showed that the white matter in an adults' brains changed as they leaed how to juggle over a period of several months. "They found that if you scan [the brains of] adults before they lea how to juggle, and then three months later, you can see changes in the brain structure," says Dumontheil.
Time spent on social media could, therefore, also cause the brain to change and grow.
"We might be a bit less good at reading subtle expressions on faces that are moving, but we might be much quicker at monitoring what's going on in a whole group of our friends," says Dumontheil.
So are these new skills a good or a bad thing? Neither, she says. "It's just a way we have of adapting to our environment."
source:here