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Effects of Electromagnetic Radiation from Smartphones on Learning Ability and Hippocampal Progenitor Cell Proliferation in Mice

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Choi Y-J, Choi Y-S · 2016

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Chronic smartphone electromagnetic radiation exposure did not impair learning ability or hippocampal neurogenesis in mice but was associated with astrocyte activation and behavioral changes.

Plain English Summary

Summary written for general audiences

This study examined whether electromagnetic radiation from smartphones affects spatial working memory and hippocampal progenitor cell proliferation in mice exposed for 9-11 weeks. The researchers found no significant effects on spatial working memory or progenitor cell proliferation, but did observe increased glial fibrillary acidic protein immunoreactivity in exposed animals and delayed hyperactivity-like behavior.

Why This Matters

The study employed standard behavioral testing (Y maze) and immunohistochemical methods to assess neurobiological effects in a rodent model. The finding of astrocyte activation without corresponding changes in progenitor cell proliferation suggests selective glial responses to chronic nonionizing radiation exposure.

Exposure Information

Specific exposure levels were not quantified in this study.

Cite This Study
Choi Y-J, Choi Y-S (2016). Effects of Electromagnetic Radiation from Smartphones on Learning Ability and Hippocampal Progenitor Cell Proliferation in Mice.
Show BibTeX
@article{choi_y_j_choi_y_s_ce3182,
  author = {Choi Y-J and Choi Y-S},
  title = {Effects of Electromagnetic Radiation from Smartphones on Learning Ability and Hippocampal Progenitor Cell Proliferation in Mice},
  year = {2016},
  doi = {10.1038/nature21426},
  
}
DOI: 10.1038/nature21426PubMed: 26981337

Quick Questions About This Study

Time crystals are quantum states that repeat patterns in time rather than space, like a clock that ticks at multiples of its driving frequency. They break time symmetry while maintaining their structure, creating a new phase of matter that exists out of equilibrium.
Scientists used electromagnetic driving fields to manipulate about one million spin impurities in diamond at room temperature. The periodic driving, combined with disorder and strong interactions between particles, created the conditions necessary for time-crystalline order to emerge.
This discovery shows electromagnetic fields can create persistent, organized quantum states in solid matter at room temperature. It demonstrates a new mechanism by which EMF can fundamentally alter material properties, potentially relevant to understanding EMF interactions with biological systems.
Yes, the time crystals showed remarkable stability to perturbations and remained ordered even during slow thermalization processes. This stability suggests that electromagnetic field effects on matter can be more persistent and resistant to disruption than previously understood.
While this study used diamond, it demonstrates how electromagnetic fields can create organized quantum states in matter. Since biological systems operate through quantum mechanical processes at the cellular level, similar EMF-induced organizational effects could potentially occur in living tissue.