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A smartphone’s glow is often the first and last thing we see each day, making it an inseparable part of modern life. However, a recent study published in Computers in Human Behavior suggests that even a short break from smartphone use can alter brain activity, raising new concerns about the impact of excessive screen time.
The Study: A 72-Hour Smartphone Restriction Diet
Researchers recruited 25 young adults, aged 18 to 30, for a three-day smartphone restriction experiment. During this period, participants were allowed to use their smartphones only for essential tasks such as work, daily activities, and communication with close family and significant others. Psychological assessments and functional magnetic resonance imaging (fMRI) scans were conducted before and after the restriction period to observe changes in brain activity.
Brain Activity Changes Similar to Addiction
The study revealed significant activity shifts in brain regions associated with reward and craving, patterns commonly seen in substance or alcohol addiction. Participants underwent fMRI scans while being shown different sets of images, including neutral scenes, smartphones turned on, and smartphones turned off. The scans demonstrated changes in areas related to dopamine and serotonin—neurotransmitters that regulate mood and emotions—suggesting that smartphone restriction may induce withdrawal-like symptoms in certain individuals.
Ongoing Debate on Smartphone Addiction
The findings contribute to the ongoing debate about excessive smartphone use (ESU) and the term “smartphone addiction” (SPA). While some experts caution against labeling smartphone overuse as an addiction due to its complex emotional and social factors, neuroscience research continues to highlight the potential risks of excessive screen time.
Implications for Digital Well-being
As smartphones become more integrated into daily life, understanding their effects on the brain is crucial. The study highlights the importance of mindful smartphone use and the potential benefits of periodic digital detoxes to promote healthier digital habits.
More Information:
Mike M. Schmitgen et al, Effects of Smartphone Restriction on Cue-Related Neural Activity, Computers in Human Behavior (2025). DOI: 10.1016/j.chb.2025.108610
Journal Information: Computers in Human Behavior
Disclaimer: This article is for informational purposes only and does not constitute medical or psychological advice. Readers experiencing concerns related to smartphone use should consult a qualified healthcare professional.
