This study explores a new idea about how tiny magnetic particles in the brain, called magnetite nanoparticles, might be connected to brain wave activity. Magnetite occurs naturally in brain tissue and has been linked to brain function and even some diseases.

Brain waves (neural oscillations) are patterns of electrical activity that are important for thinking, memory, and other mental processes. Using physics models and computer simulations, we found that the size of these magnetite particles (about 19–24 nanometers across) could influence the frequency of brain waves. Larger particles match slower brain waves, while smaller ones match faster waves.

Interestingly, this size range also overlaps with the 50–60 Hz frequency of power lines, suggesting that environmental electromagnetic fields might interact with brain activity in subtle ways.

Our findings propose a physical link between magnetite particle size and brain wave patterns. This could help future studies explore how these particles affect brain function, aging, and sensitivity to environmental electromagnetic fields.