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  2. Cranial electrotherapy stimulation - Wikipedia

    en.wikipedia.org/wiki/Cranial_electrotherapy...

    Device used to perform CES. Cranial electrotherapy stimulation ( CES) is a form of neurostimulation that delivers a small, pulsed, alternating current via electrodes on the head. [1] CES is used with the intention of treating a variety of conditions such as anxiety, depression and insomnia. [1] CES has been suggested as a possible treatment for ...

  3. Noise-cancelling headphones - Wikipedia

    en.wikipedia.org/wiki/Noise-cancelling_headphones

    Noise -cancelling headphones alongside a carry case. Noise-cancelling headphones are headphones which suppress unwanted ambient sounds using active noise control. This is distinct from passive headphones which, if they reduce ambient sounds at all, use techniques such as soundproofing . Noise cancellation makes it possible to listen to audio ...

  4. Health effects from noise - Wikipedia

    en.wikipedia.org/wiki/Health_effects_from_noise

    Elevated workplace or environmental noise can cause hearing impairment, tinnitus, hypertension, ischemic heart disease, annoyance, and sleep disturbance. [3] [4] Changes in the immune system and birth defects have been also attributed to noise exposure. [5] Although age-related health effects ( presbycusis) occur naturally with age, [6] in many ...

  5. Shift work sleep disorder - Wikipedia

    en.wikipedia.org/wiki/Shift_work_sleep_disorder

    Shift work sleep disorder ( SWSD) is a circadian rhythm sleep disorder characterized by insomnia, excessive sleepiness, or both affecting people whose work hours overlap with the typical sleep period. Insomnia can be the difficulty to fall asleep or to wake up before the individual has slept enough. [1] About 20% of the working population ...

  6. Transcranial direct-current stimulation - Wikipedia

    en.wikipedia.org/wiki/Transcranial_direct...

    MeSH. D065908. [ edit on Wikidata] Transcranial direct current stimulation ( tDCS) is a form of neuromodulation that uses constant, low direct current delivered via electrodes on the head. It was originally developed to help patients with brain injuries or neuropsychiatric conditions such as major depressive disorder.

  7. Sleep hygiene - Wikipedia

    en.wikipedia.org/wiki/Sleep_hygiene

    Sleep hygiene is a behavioral and environmental practice [2] developed in the late 1970s as a method to help people with mild to moderate insomnia. [2] Clinicians assess the sleep hygiene of people with insomnia and other conditions, such as depression, and offer recommendations based on the assessment. Sleep hygiene recommendations include ...

  8. How noise cancelling headphones work - AOL

    www.aol.com/news/noise-cancelling-headphones...

    It's priced shockingly well for how good it sounds, and while its noise cancelling isn't on par with more expensive options, it'll do a decent job at blocking low-pitched hums. Aukey Beyond ANC Hybrid

  9. Noise-canceling microphone - Wikipedia

    en.wikipedia.org/wiki/Noise-canceling_microphone

    The internal electronic circuitry of an active noise-canceling mic attempts to subtract noise signal from the primary microphone. The circuit may employ passive or active noise canceling techniques to filter out the noise, producing an output signal that has a lower noise floor and a higher signal-to-noise ratio.

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