What is EAS

(Electric and Acoustic Stimulation)

If you are affected by partial deafness or high-frequency hearing loss, chances are, you may find that hearing aids alone are not enough to improve your hearing. This could become more acute, especially in noisy environments or when there are many people speaking at the same time (e.g., business meetings, conferences, cocktail parties, social gatherings). Hearing loss may be holding you back instead of allowing you to fully interact with colleagues, friends, family and loved ones. The EASTM (Electric Acoustic Stimulation) Hearing Implant System is a unique solution designed to meet this specific need.

A pioneering technology that has been used for more than a decade, EAS is a system backed with numerous clinical evidences to improve your speech understanding in both quiet and noisy environments 1, 2, 3.

EAS provides acoustic stimulation that supports your natural residual hearing4 by amplifying the low frequencies. Simultaneously, the integrated cochlear implant technology automatically supplies the appropriate electric stimulation within the cochlea to bring back the perception of the high-frequency sounds that have been missing.

EAS is the ideal solution for individuals with partial deafness, defined as a mild to moderate low-frequency sensorineural hearing loss sloping to a profound hearing loss in the higher frequencies. If your hearing threshold fits into the zone highlighted in red, you may qualify as a candidate for the EAS Hearing Implant System.

If the hearing threshold fits within the range that is highlighted in red, the patient may qualify as a candidate for the EAS Hearing Implant System.

EAS is designed to bring back the sounds that may have been missing in an individual's life, enabling the user to once again hear clearly and naturally. This audiogram illustrates how EAS can restore the user's hearing potential.


  • Can Hear
  • Cannot Hear
  • Can Hear but Not Clear

Restore the Hearing Potential

  • Acoustic Stimulation
  • Electrical Stimulation

  1. Helbig et. al (2011), Combined electric acoustic stimulation with the PULSAR CI 100 implant system using the FLEX EAS electrode array, Acta Oto-Laryngologica, Pp. 585-595.
  2. Skarzynski et. al (2010), Hearing preservation in partial deafness treatment , Med Sci Monit, 16(11), Pp. 555-562.
  3. Gsöttner et. al (2008), Electric Acoustic Stimulation of the auditory system: results of a multi-center investigation, Acta Oto.Laryngologica, Pp. 968-975.
  4. residual hearing is the amount of natural hearing an individual has left after a hearing loss.
  5. thresholdis the softness level in decibels that you are able to hear a sound signal.

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