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The sound of a mobile phone ringing affects the complex reaction time of its owner.

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Zajdel R, Zajdel J, Zwolińska A, Smigielski J, Beling P, Cegliński T, Nowak D. · 2012

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Even the sound of your ringing phone slows reaction time by 36 milliseconds, potentially impacting safety during driving or other complex tasks.

Plain English Summary

Summary written for general audiences

Researchers tested 42 healthy students' reaction times while performing complex tasks, comparing their performance when their personal mobile phone was ringing versus when it was silent. They found that the phone's ringing sound significantly slowed reaction times by about 36 milliseconds (from 597ms to 633ms), with women showing greater impairment than men. This suggests that even the sound of a ringing phone can distract the brain enough to measurably affect cognitive performance.

Why This Matters

This study reveals an often-overlooked aspect of how mobile phones affect our cognitive function. While most EMF research focuses on the biological effects of electromagnetic radiation itself, this Polish research demonstrates that even the auditory component of phone use impairs brain performance. The 36-millisecond delay may seem small, but reaction time differences of this magnitude can be the difference between avoiding an accident and causing one. What makes this research particularly relevant is that it measured effects from participants' own phones, meaning the ringtone was familiar yet still disruptive. The science demonstrates that our brains are constantly processing multiple streams of information, and mobile phone sounds represent a significant cognitive load that degrades our ability to perform complex tasks requiring attention and quick responses.

Exposure Information

Specific exposure levels were not quantified in this study.

Study Details

We compared a subject's reaction time while performing a test either with a mobile phone ringing or without

The examination was performed on a PC-based reaction time self-constructed system Reactor. The study...

There were significant differences (p < 0.001) in reaction time in control (597 ms), mobile (633 ms)...

The results obtained proofed the ringing of a phone exerts a significant influence on complex reaction time and quality of performed task.

Cite This Study
Zajdel R, Zajdel J, Zwolińska A, Smigielski J, Beling P, Cegliński T, Nowak D. (2012). The sound of a mobile phone ringing affects the complex reaction time of its owner. Arch Med Sci.8(5):892-898, 2012.
Show BibTeX
@article{r_2012_the_sound_of_a_2697,
  author = {Zajdel R and Zajdel J and Zwolińska A and Smigielski J and Beling P and Cegliński T and Nowak D.},
  title = {The sound of a mobile phone ringing affects the complex reaction time of its owner.},
  year = {2012},
  
  url = {https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3506222/},
}

Quick Questions About This Study

Researchers tested 42 healthy students' reaction times while performing complex tasks, comparing their performance when their personal mobile phone was ringing versus when it was silent. They found that the phone's ringing sound significantly slowed reaction times by about 36 milliseconds (from 597ms to 633ms), with women showing greater impairment than men. This suggests that even the sound of a ringing phone can distract the brain enough to measurably affect cognitive performance.