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Power naps 'by flick of a switch'
The researchers found that positioning the TMS machine the right way triggered slow waves that travelled throughout the brain. With each magnetic pulse, the volunteers' brains immediately generated slow waves typical of deep sleep.
"Creating slow waves on demand could some day lead to treatments for insomnia, where slow waves may be reduced," said study leader Professor Giulio Tononi, from the University of Wisconsin-Madison. "Theoretically, it could also lead to a magnetically stimulated 'power nap' which might confer the benefit of eight hours sleep in just a few hours."