Viewing Instagram pictures with many Likes recruits the reward network and reduces cognitive-control activation in adolescents¶

Claim · All claims
Evidence · 1 study (2 entries) · review r2–r3 · q2
Currency · newest study 2021 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? In an fMRI experiment, adolescents showed increased brain activity for pictures with more Likes, with popular pictures recruiting the reward network (NAcc, caudate, ventral tegmental area). → Marciano Laura 2021 q2 i? When adolescents viewed pictures of risky and deviant behaviors with many Likes, activation in the cognitive-control network decreased relative to few Likes. → Marciano Laura 2021 (2)

Evidence¶

Marciano Laura 2021¶

Marciano Laura, Camerini Anne-Linda, Morese Rosalba. (2021). The Developing Brain in the Digital Era: A Scoping Review of Structural and Functional Correlates of Screen Time in Adolescence. Frontiers in Psychology. https://doi.org/10.3389/fpsyg.2021.671817

q2 · i? · review · r2

Task-based fMRI study in which 34 adolescents aged 13-18 viewed 148 Instagram pictures with varied Like counts; all participants "showed increased brain activity for pictures with more Likes in all experimental conditions." No effect size printed.

"Furthermore, fMRI results showed that viewing pictures with many Likes was mainly associated with the recruitment of the reward network (e.g., NAcc, caudate, ventral tegmental area)."

Marciano Laura 2021 (2)¶

Marciano Laura, Camerini Anne-Linda, Morese Rosalba. (2021). The Developing Brain in the Digital Era: A Scoping Review of Structural and Functional Correlates of Screen Time in Adolescence. Frontiers in Psychology. https://doi.org/10.3389/fpsyg.2021.671817

q2 · i? · review · r3

Same Instagram fMRI experiment: the authors reported that when adolescents viewed risky and deviant pictures, "activation in the cognitive-control network decreased," and interpreted this decrease as a mechanism implicated in at-risk involvement. No effect size printed.

"Significantly greater neural recruitment of the left frontal cortex until the precentral gyrus was found when they viewed pictures with risky and deviant contents that received many Likes compared to few Likes."

Discussion¶

Related Claims¶

• Excessive smartphone use in adolescents is associated with reduced frontostriatal connectivity and greater cortisol-related withdrawal symptoms — related
• Impending rewards improve adolescent antisaccade performance toward adult levels, accompanied by greater nucleus accumbens activation — related