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  2. Closed-eye hallucination - Wikipedia

    en.wikipedia.org/wiki/Closed-eye_hallucination

    When this level is reached, the CEV noise seems to calm down and fade away, leaving behind an intense flat ordered blackness. The visual field becomes a sort of active space. A side component of this is the ability to feel motion when the eyes are closed. [citation needed] CEV noise simulation with disappearing flashing image

  3. Auditory hallucination - Wikipedia

    en.wikipedia.org/wiki/Auditory_hallucination

    An auditory hallucination, or paracusia, [ 1] is a form of hallucination that involves perceiving sounds without auditory stimulus. While experiencing an auditory hallucination, the affected person hears a sound or sounds that did not come from the natural environment. A common form of auditory hallucination involves hearing one or more voices ...

  4. Health effects from noise - Wikipedia

    en.wikipedia.org/wiki/Health_effects_from_noise

    Sound levels as low as 40 dB(A) can generate noise complaints [43] and the lower threshold for noise producing sleep disturbance is 45 dB(A) or lower. [ 44 ] Other factors that affect the annoyance level of sound include beliefs about noise prevention and the importance of the noise source, and annoyance at the cause (i.e., non-noise related ...

  5. McGurk effect - Wikipedia

    en.wikipedia.org/wiki/McGurk_effect

    McGurk effect. The McGurk effect is a perceptual phenomenon that demonstrates an interaction between hearing and vision in speech perception. The illusion occurs when the auditory component of one sound is paired with the visual component of another sound, leading to the perception of a third sound. [ 1] The visual information a person gets ...

  6. Noise-induced hearing loss - Wikipedia

    en.wikipedia.org/wiki/Noise-induced_hearing_loss

    Otorhinolaryngology, audiology. Noise-induced hearing loss ( NIHL) is a hearing impairment resulting from exposure to loud sound. People may have a loss of perception of a narrow range of frequencies or impaired perception of sound including sensitivity to sound or ringing in the ears. [ 1] When exposure to hazards such as noise occur at work ...

  7. Zoo Miami Shares the Different and Fascinating Sounds Lions ...

    www.aol.com/zoo-miami-shares-different...

    Growling is a common sound that lions make and it sometimes sounds like a cough. Much like when a dog growls, it's a warning sound. It can also be a threat telling others not to approach them or ...

  8. Microwave auditory effect - Wikipedia

    en.wikipedia.org/wiki/Microwave_auditory_effect

    The microwave auditory effect, also known as the microwave hearing effect or the Frey effect, consists of the human perception of sounds induced by pulsed or modulated radio frequencies. The perceived sounds are generated directly inside the human head without the need of any receiving electronic device. The effect was first reported by persons ...

  9. Acoustic reflex - Wikipedia

    en.wikipedia.org/wiki/Acoustic_reflex

    The acoustic reflex threshold (ART) is the sound pressure level (SPL) from which a sound stimulus with a given frequency will trigger the acoustic reflex. The ART is a function of sound pressure level and frequency. People with normal hearing have an acoustic reflex threshold (ART) around 70–100 dB SPL. People with conductive hearing loss (i ...