[2] Proponents have speculated[3] that these may result from: 1) piezoelectric effects due to changes in the stress of the Earth's crust, 2) low-frequency electromagnetic signals, or 3) from the emission of radon gas.
Could "earthquake sensitives" be responding to some kind of "psychic impressions" or other paranormal phenomena as yet unknown to science?
After reviewing the scientific literature the International Commission on Earthquake Forecasting for Civil Protection (ICEF)[9] concluded that there is no credible scientific evidence that animals display behaviors indicative of earthquake-related environmental disturbances that are unobservable by the physical and chemical sensor systems available to earthquake scientists.
[10]On their side, the proponents claim that there have been "many scientific papers" supporting their views,[11] but "most have been totally rejected by the keepers of high wisdom.
Though a few others have continued to post their predictions on Berkland's website, there appears to be no effort to correlate "ear tones" or any other physiological effect with subsequent earthquakes.