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JAMA sub-issue: Frequent use of social media affects young brains

 Last Update: 2023-02-03
 Source: Internet
 Author: User

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Executive Summary

On January 3, 2023, a new study published in JAMA Pediatrics concluded that the frequency with which adolescents browse on 3 social media platforms (Facebook, Instagram, Snapchat) is associated
with longitudinal changes in functional brain development throughout adolescence.

Study screenshots

status quo

Lead author Eva H.
Telzer, associate professor of psychology and neuroscience, said:

Puberty is one of the most important periods of brain development, and it is undergoing more recombinant changes, second only to the period we see in early infancy;
This is a very dramatic period of brain development, especially in these brain regions that respond to social rewards;
Social rewards are not limited to social media sites and can be positive feedback from peers;
Other studies have found that some teens use their phones almost regularly, checking social media
at least once an hour.

conclusion

The study conducted a three-year functional magnetic resonance imaging (fMRI) longitudinal cohort study
of 169 sixth- and seventh-graders.

The results show:

169 participants (mean age, 12.
89 years; The range was 11.
93-14.
52 years; 91 females; 38 black, 60 Latino, 50 white, 15 multiracial) met the inclusion criteria;
It is associated with the left amygdala, posterior insula (PI), and ventral striatum (VS; β, −0.
22; 95% CI, -0.
33 to -0.
11), right amygdala (β, −0.
30 to -0.
08), right forebrain (AI; Participants with non-habitual social media checking behaviors β, −0.
23; 95% CI, -0.
37 to -0.
09) and the left dorsolateral prefrontal cortex (DLPFC; β, 9; 9, 9, 95% CI, −0.
44 to -0.
14 to -0.
14) had lower neurosensitivity to social expectations at 12 years of age;
Among those with habitual examination behaviour, left amygdala/PI/VS (β, 0.
11; 95% CI, 0.
04 to 0.
18), right amygdala (β, 0.
09; 95% CI, 0.
02 to 0.
16), right AI (β, 0.
15; 95% CI, 0.
02 to 0.
20), and left DLPFC (β, 0.
19; 95% CI, 0.
05 to 0.
25);
Among people with non-habitual examination behaviors, left amygdala/PI/VS (β, −0.
12; 95% CI, −0.
06), right amygdala (β, −0.
10; 95% CI, −0.
17 to −0.
03), right AI (β, −0.
13; 95% CI, −0.
22 to -0.
04), and left DLPFC (β, −0.
10, 95% CI, -0.
22 to -0.
03).

prospect

Lead author Eva H.
Telzer said:

Social media checking behavior in early teens may be associated with changes in brain sensitivity to social rewards and punishments;
Further research is needed on the long-term link between social media use, adolescent neurodevelopment, and psychological adjustment to understand the impact
of pervasive influences on adolescent development today.

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