Brain-implanted conductors amplify radiofrequency fields in rodents: Advantages and risks

Authors: Vöröslakos M, Yaghmazadeh O, Alon L, Sodickson DK, Buzsáki G.

Year: 2023 Oct 24

Category: Bioelectromagnetics

Journal: Bioelectromagnetics

DOI: 10.1002/bem.22489

URL: https://pubmed.ncbi.nlm.nih.gov/37876116/

Abstract

Overview

The study investigates the interactions between radiofrequency (RF) fields and brain tissue in the presence of implants, crucial for updating wireless safety protocols and enhancing medical imaging technologies.

Findings

  • Setting and Methodology: This research focused on the effects of 950 MHz RF energy exposure on freely moving and anesthetized rats and mice, which were monitored for brain activity, temperature, and behavior changes following the implantation of neuronal recording electrodes.
  • Results: Exposure led to quick neuronal firing without causing thermal injury. Moreover, the presence of brain implants amplified the effects of RF stimulation, which included reversible behavioral changes in the test subjects. A significant finding was a greater than tenfold increase in brain temperature near the implant, as measured by an optical temperature measurement system.
  • Implications: Although the study underscores the necessity for meticulous safety assessments for brain-implanted devices, it also suggests the potential use of metal implants in neurostimulation under controlled temperature conditions.

Conclusion

The discoverize highlights both, potential therapeutic applications and the need for rigorous safety measures for the use of brain implants in relation to RF fields exposure.

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