A recent study analyzes the neurological effects of a 72-hour smartphone restriction in 25 young adults aged 18 to 30. Participants, divided according to their level of use (excessive or moderate), underwent functional MRIs before and after the deprivation period.
Observed Brain Changes
The results reveal several changes in brain activity:
- Marked increase in activity in the nucleus accumbens (reward circuit) and the anterior cingulate cortex
- Decrease in activation of sensory processing areas (parietal and occipital lobes)
- Direct correlation between craving intensity and nucleus accumbens activation
These changes are similar to those observed in other forms of addiction (nicotine, video games, psychoactive substances). Participants with excessive use reported more irritability and anxiety during deprivation.
Limitations and Perspectives
The study has several limitations: a small number of participants, data loss for 7 out of 25 subjects, and a short duration of restriction. The authors emphasize that functional MRI cannot irrefutably confirm the mechanisms at play in daily life. Further research of longer durations and other age groups would be necessary.
To delve deeper into these results and discover the complete methodological details, consult the original article.
Source: Smartphones, addiction and brain
This summary aims to be transparent and neutral. Disconnecto acts here as an observer of the digital landscape, without taking a stance. We invite you to consult the original source for a complete reading.
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Digital detox in 2026: disconnection figures