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Fragmented learning from short videos modulates neural activity and connectivity during memory retrieval
Meiting Wei1,2,3, Jiang Liu1, Huabin Wang1
1Center for Educational Cognitive Neuroscience, Faculty of Education, Yunnan Normal University, Kunming, Yunnan province, P. R. China.
NPJ Science of Learning
|January 10, 2026
Summary
Short videos impair memory and disrupt brain activity, particularly in areas for information integration and cognitive control. This fragmented media exposure has significant cognitive costs, impacting memory accuracy and neural connectivity.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Media Studies
Background:
- Growing concerns exist regarding the impact of short videos on cognitive functions like memory.
- Direct neural evidence investigating these effects is limited.
Purpose of the Study:
- To investigate the neural underpinnings of memory performance differences between short and long video exposure.
- To examine the association between neural alterations, memory accuracy, and habitual short video usage.
Main Methods:
- fMRI (functional Magnetic Resonance Imaging) was used to measure brain activity in 57 participants.
- Participants viewed either continuous long videos or multiple short videos matched for content and duration.
- Memory recall tasks were administered to assess performance.
Main Results:
- Short video exposure resulted in significantly lower memory accuracy compared to long video viewing.
- Reduced brain activation was observed in the claustrum, caudate nucleus, and middle temporal gyrus.
- Weakened connectivity between the claustrum and caudate nucleus correlated with memory performance and usage habits.
Conclusions:
- Learning via short videos impairs memory by disrupting neural systems crucial for information integration, cognitive control, and semantic processing.
- Provides novel neurobiological evidence for the cognitive costs associated with fragmented media consumption.
- Highlights the detrimental effects of short video engagement on memory and associated brain functions.
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