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Evaluation of Hemisphere Lateralization with Bilateral Local Field Potential Recording in Secondary Motor Cortex of Mice
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Hemispheric dominance and cell phone use.

Michael D Seidman1, Bianca Siegel, Priyanka Shah

  • 1Department of Otolaryngology–Head and Neck Surgery, Wayne State University, Detroit, MI, USA.

JAMA Otolaryngology-- Head & Neck Surgery
|May 18, 2013
PubMed
Summary

Most people use their cell phones on the same side of their head as their dominant hand, suggesting a link between cell phone use and brain dominance. This finding may impact cell phone safety research.

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Area of Science:

  • Neuroscience
  • Public Health
  • Otolaryngology

Background:

  • Understanding cell phone usage patterns is crucial for assessing potential health impacts.
  • Most individuals are right-handed with left-brain language hemispheric dominance (LHD).
  • Anecdotal observation suggests a prevalence of right-ear cell phone use.

Purpose of the Study:

  • To investigate the association between preferred ear for cell phone use and auditory hemispheric dominance (AHD) or LHD.
  • To explore the relationship between handedness and cell phone ear preference.

Main Methods:

  • An internet-based survey using a modified Edinburgh Handedness Inventory was distributed.
  • Participants reported their dominant hand, preferred ear for cell phone use, and history of brain tumors.
  • Data were collected from 717 respondents from diverse online groups.

Main Results:

  • Ninety percent of respondents were right-handed; 68% of these used their right ear for cell phones.
  • Nine percent were left-handed; 72% of these used their left ear for cell phones.
  • A significant association (73%) was found between hand dominance and preferred ear for cell phone use.

Conclusions:

  • A correlation exists between handedness, preferred ear for cell phone use, and hemispheric dominance.
  • Cell phone ear preference appears to align with handedness, potentially indicating differences between AHD and LHD.
  • While this study did not establish a link to cancer, further research into cell phone safety and hemispheric dominance is warranted.