SmartSleep Professionals


A new wave of innovation in sleep assistive technology

The significance of slow wave activity (SWA)

the significance of slow wave activity

Slow wave activity (SWA) during sleep has beneficial effects on the restoration of cognitive function during the day. 

It has been shown that memory consolidation and learning capacity during waking hours are positively influenced by achieving slow wave sleep at night.

Research findings:


  • The length and the strength of slow waves matter
  • Intervention during slow wave sleep can enhance slow wave activity
  • Acoustic stimulation found to be an effective way to increase SWA

Acoustic stimulation found to be effective at increasing slow wave activity

Once investigated, acoustic stimulation, or sound, was found to be an effective way to enhance slow waves. 

Additionally, waves enhanced by sound were similar to those spontaneously generated slow waves observed during natural sleep††.

†† Tononi G, Riedner B, Hulse B, Ferrarelli F, Sarasso S. Enhancing sleep slow waves with natural stimuli. Medicamundi. 2010;54(2):82-88.
Acoustic stimulation

SmartSleep: Setting the tone for the future of sleep

Setting the tone for the future of sleep

Philips has developed a closed-loop, EEG-based wearable system (SmartSleep) that uses highly sensitive sensors to detect deep sleep in real time.

The system uses auditory stimulation to enhance slow wave sleep without causing arousals.


SmartSleep is for patients who are mildly sleep-restricted, but do not suffer from serious sleep conditions such as insomnia or obstructive sleep apnea †.

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Journal articles

Centers for Disease Control and Prevention. “Effect of Short Sleep on Daily Activities – United States, 2005-2008.” Morbidity and Mortality Weekly Report, vol. 60, no. 8, pp. 239-242, 2011.


H. Van Dongen, G. Maislin, J. Mullington, D. Dinges. “The Cumulative Cost of Additional Wakefulness: Dose-Response Effects on Neurobehavioral Functions and Sleep Physiology from Chronic Sleep Restriction and Total Sleep Deprivation,” Sleep, vol. 26, no. 2, pp. 117-26, 2015


G. Tononi, B. Riedner, B. Hulse, F. Ferrarelli, S. Sarasso. “Enhancing Sleep Slow Waves with Natural Stimuli.” Medicamundi, vol. 54, no. 2, pp 82-88, 2010.


M. Bellesi,  B. Riedner, G. Garcia-Molina, C. Cirelli, and G. Tononi. “Enhancement of Sleep Slow Waves: Underlying Mechanisms and Practical Consequences,” Front. Syst. Neurosci., vol. 8, pp 1-17, 2014. doi: 10.3389/fnsys.2014.00208.

Institute of Medicine (US) Committee on Sleep Medicine and Research. “Sleep Disorders and Sleep Deprivation: An Unmet Public Health Problem.” Washington DC: National Academies Press, 2006. Available from: doi: 10.17226/11617.

L. Bayer, I. Constantinescu, S. Perrig, J. Vienne, P.P. Vidal, M. Muhlethaler, et al. “Rocking synchronizes brain waves during a short nap.” Curr. Biol., vol. 21, no. 12, pp. R461–R462, 2011. doi: 10.1016/j.cub.2011.05.012.


H.V. Ngo, T. Martinetz, J. Born, M. Mölle. “Auditory closed-loop stimulation of the sleep slow oscillation enhances memory.” Neuron, vol. 78, no. 3, pp. 545–553, 2013. doi: 10.1016/j.neuron.2013.03.006.

† SmartSleep should only be used by people who fall asleep within 30 minutes of trying to fall asleep; sleep at least 5 hours straight but less than 7 hours; don’t regularly wake up during the night; don’t use medications or alcohol to fall asleep and do not have hearing loss. Smartsleep is recommended for use for people 40 years of age and under.