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A mathematical model and experimental procedure to analyze the cognitive effects of audio frequency magnetic fields

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Authors not listed · 2023

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Audio frequency magnetic fields from common devices like headphones can impair working memory by up to 32%.

Plain English Summary

Summary written for general audiences

Researchers exposed 65 healthy young adults to weak magnetic fields (0.1 microTesla) at audio frequencies (20 Hz to 20 kHz) while testing their working memory using the Sternberg test. The magnetic field exposure, applied near the temporal-parietal brain region, caused measurable deterioration in memory performance that could affect up to 32% of working memory function.

Why This Matters

This study breaks important new ground by examining cognitive effects from audio frequency magnetic fields - the type of EMF emitted by headphones, speakers, and audio equipment we use daily. While we've long known that sound itself affects cognition, this research demonstrates that the magnetic fields from audio devices can directly impair working memory when positioned near the head. The 0.1 microTesla exposure level used here is remarkably low, yet still produced measurable cognitive deficits. What makes this particularly concerning is how common this exposure scenario is in our daily lives. Every time you use headphones, earbuds, or sit near speakers, you're potentially exposing your brain to these same audio frequency magnetic fields. The researchers specifically targeted the temporal-parietal region where working memory processing occurs, mimicking real-world audio device placement. The 32% reduction in memory operability they observed isn't subtle - it represents a significant cognitive impact that could affect learning, concentration, and mental performance in ways we're only beginning to understand.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 20 Hz - 20 kHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 20 Hz - 20 kHzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study.

Cite This Study
Unknown (2023). A mathematical model and experimental procedure to analyze the cognitive effects of audio frequency magnetic fields.
Show BibTeX
@article{a_mathematical_model_and_experimental_procedure_to_analyze_the_cognitive_effects_of_audio_frequency_magnetic_fields_ce4496,
  author = {Unknown},
  title = {A mathematical model and experimental procedure to analyze the cognitive effects of audio frequency magnetic fields},
  year = {2023},
  doi = {10.3389/fnhum.2023.1135511},
  
}
DOI: 10.3389/fnhum.2023.1135511PubMed: 37250701

Quick Questions About This Study

Yes, this study found that audio frequency magnetic fields at 0.1 microTesla - similar to levels from headphones and speakers - caused measurable deterioration in working memory, potentially affecting up to 32% of memory function during cognitive tasks.
The researchers tested magnetic fields across the entire audio frequency spectrum from 20 Hz to 20 kHz. This range covers the same frequencies used by audio equipment like headphones, speakers, and other acoustic devices we use daily.
The magnetic field strength was only 0.1 microTesla, which is extremely weak - about 2,000 times weaker than Earth's magnetic field. Despite this low intensity, the exposure still caused measurable cognitive deficits in working memory performance.
The magnetic stimulus was applied to both sides of the frontal cortex near the temporal-parietal area, which is the brain region responsible for working memory processing. This placement mimics where headphones and earbuds typically sit.
The study tested 65 healthy young adults using the Sternberg memory test. The magnetic field exposure caused working memory deterioration that the researchers calculated could affect up to 32% of overall memory operability in the exposed group.