Can auricular vagus nerve stimulation be applied on both sides of the head simultaneously?

Can auricular vagus nerve stimulation be applied on both sides of the head simultaneously?
I was wondering if a small part of the current might go through the head to the other ear if you apply it on both sides of the head? The currents used in auricular vns tend to be somewhat higher than the safe limits for usual tDCS. The taVNS device by Parasym can put out up to 36mA. I mean the current would probably not flow directly through cortical regions of the brain since the ears are on the height of the lower brainstem, but I can imagine that this current can not be considered safe for any ... read more
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