Czech researchers led by Filip Černý studied EEG data of people suffering from sleep paralysis. The study involved 17 patients who reported regular episodes and 17 individuals who served as a control group. The participants spent one night in the laboratory being monitored by instruments.
The results showed significantly higher theta activity and lower alpha activity in the “patients” compared to the “healthy” individuals. However, during the experiment, no episodes of sleep paralysis occurred in any of the participants. From this, the authors concluded that high theta activity frequency may indicate a predisposition to sleep paralysis.
The scientists also noted a slight increase in delta activity among the “patients.” The authors pointed out that similar results were previously demonstrated by other researchers when studying narcoleptics. It is known that 50–60% of narcolepsy patients report episodes of sleep paralysis.
The article was published in February 2024 in Frontiers in Neuroscience.
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