Low Intensity Magnetic Field Influences Short-Term Memory: A Study in a Group of Healthy Students
[Un test di provocazione metodologicamente perfetto, i cui risultati sono chiari: 0.1 microtesla è un valore sufficiente ad indurre alterazioni a carico della memoria a breve termine in soggetti sani, in un test in doppio cieco.]
Bioelectromagnetics. 2016 Jan;37(1):37-48. doi: 10.1002/bem.21944. Epub 2015 Dec 11.
1Department of Applied Physics and Electromagnetism, Universitat de València, Valencia, Burjassot, Spain.
2Research Center, Hospital Universitario LA FE, Valencia, Spain.
3Department of Statistics and Operation Research, Universitat de València, Valencia, Burjassot, Spain.
Received: 24 March 2015
Accepted: 23 October 2015
Published: January 2016
Sternberg task; electromagnetic fields; learning deficit; reaction time; working memory
This study analyzes if an external magnetic stimulus (2 kHz and approximately 0.1 μT applied near frontal cortex) influences working memory, perception, binary decision, motor execution, and sustained attention in humans. A magnetic stimulus and a sham stimulus were applied to both sides of the head (frontal cortex close to temporal-parietal area) in young and healthy male test subjects (n = 65) while performing Sternberg’s memory scanning task. There was a significant change in reaction time. Times recorded for perception, sustained attention, and motor execution were lower in exposed subjects (P < 0.01). However, time employed in binary decision increased for subjects exposed to magnetic fields. From results, it seems that a low intensity 2 kHz exposure modifies short-term working memory, as well as perception, binary decision, motor execution, and sustained attention. Bioelectromagnetics. 37:37-48, 2016. © 2015 Wiley Periodicals, Inc.
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