Frequency-specific effects of repetitive magnetic stimulation on primary astrocyte cultures.
Clarke D, Penrose MA, Penstone T, Fuller-Carter PI, Hool LC , Harvey AR, Rodger J, Bates KA. · 2017
View Original AbstractMagnetic stimulation at 1 Hz directly triggers calcium responses in brain support cells, revealing a new pathway for EMF brain effects.
Plain English Summary
Researchers exposed brain support cells called astrocytes to repetitive magnetic stimulation at different frequencies to see how they responded. They found that 1 Hz magnetic pulses caused a significant increase in calcium levels inside these cells, which is a sign of cellular activation. This suggests that magnetic fields can directly influence brain cells beyond just neurons, potentially explaining some of the biological effects seen with magnetic field exposure.
Why This Matters
This research provides important mechanistic insight into how magnetic fields affect the brain. While most EMF research focuses on neurons, this study demonstrates that astrocytes - the brain's support cells that regulate neuron function and brain health - respond directly to magnetic stimulation. The calcium changes observed at 1 Hz are particularly noteworthy because calcium signaling controls many cellular processes. What makes this study significant is that it identifies a specific biological pathway through which magnetic fields could influence brain function, moving beyond simple correlation to actual mechanism. The reality is that our brains contain billions of astrocytes, and if magnetic fields can alter their calcium signaling, this could have widespread implications for brain health and function.
Exposure Information
Specific exposure levels were not quantified in this study. The study examined exposure from: 1 Hz, 10 Hz
Study Details
In this study, we sought to investigate whether repeated magnetic stimulation (rMS) can influence astrocyte biology in vitro.
We tested four different rMS frequencies and measured the calcium response in primary neonatal astro...
Of all frequencies tested, 1 Hz stimulation resulted in a statistically significant rise in intracel...
Our results provide preliminary evidence that rMS can influence astrocyte physiology, indicating the potential for a novel mechanism by which rTMS can influence brain activity.
Show BibTeX
@article{d_2017_frequencyspecific_effects_of_repetitive_1735,
author = {Clarke D and Penrose MA and Penstone T and Fuller-Carter PI and Hool LC and Harvey AR and Rodger J and Bates KA.},
title = {Frequency-specific effects of repetitive magnetic stimulation on primary astrocyte cultures.},
year = {2017},
url = {https://content.iospress.com/articles/restorative-neurology-and-neuroscience/rnn160708},
}