Submission + - Frequent short-video viewers show altered brain function (psypost.org)
While participants rested in a scanner, functional magnetic resonance imaging (fMRI) measured fluctuations in blood flow associated with brain activity. The researchers examined activity in individual regions, communication within and between brain networks, and the overall organization of connections across the brain.
At the whole-brain level, higher-use participants had greater global and local efficiency, greater clustering of neighboring regions, and shorter communication paths across the brain. One interpretation for this is that intensive exposure to fast-paced audiovisual material changes brain systems involved in sensory processing and attention. The authors also acknowledged that greater efficiency is not automatically evidence of damage: similar patterns have sometimes been connected with intelligence and working-memory performance.