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Related Concept Videos

Taste Buds and Receptors01:20

Taste Buds and Receptors

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Gustation, or the sense of taste, is intrinsically linked to the anatomical structures located on the tongue. This organ's surface, along with the entirety of the oral cavity, is adorned with stratified squamous epithelium. Evident on the tongue are elevated structures known as papillae (singular = papilla), which house the mechanisms for the transduction of gustatory stimuli. Four distinct types of papillae exist, each identified by their unique morphological attributes: the circumvallate,...
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Related Experiment Video

Updated: Oct 31, 2025

Performing Intracochlear Electrocochleography During Cochlear Implantation
09:10

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Taste-strip gustometry in cochlear implanted patients.

Dirk Beutner1,2, Julia Vent2, Julia Seehawer2

  • 1Department of Otorhinolaryngology, Head and Neck Surgery University Medical Center Göttingen Göttingen Germany.

Laryngoscope Investigative Otolaryngology
|July 1, 2021
PubMed
Summary
This summary is machine-generated.

Cochlear implantation can lead to temporary taste dysfunction, particularly when the chorda tympani nerve is affected during surgery. Taste-strip tests are effective for assessing this common side effect in patients.

Keywords:
cochlea implantdysgeusiaear surgerygustatory functiongustometryhypogeusiasense of tastetaste strips

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Area of Science:

  • Otolaryngology
  • Neurosurgery
  • Sensory science

Background:

  • Cochlear implantation (CI) is a common treatment for profound hearing loss.
  • Gustatory function changes are a potential, yet often underreported, side effect of CI surgery.

Purpose of the Study:

  • To investigate the incidence and severity of gustatory dysfunction following cochlear implantation.
  • To evaluate the impact of surgical manipulation of the chorda tympani nerve (CTN) on taste function.
  • To assess the utility of taste-strip testing in CI patients.

Main Methods:

  • A retrospective study of 107 patients (113 CIs) with profound hearing impairment undergoing unilateral or bilateral CI.
  • Lateralized taste-strip tests were performed preoperatively, 3 days postoperatively, and at 6 weeks postoperatively.
  • Surgical details, including CTN status (exposed, rerouted, severed, or unexposed), were recorded.

Main Results:

  • A significant decline in taste function was observed on the implanted side 6 weeks after surgery (mean score decrease from 12.3 to 10.5).
  • Patients with intraoperative CTN exposure, rerouting, or severance experienced significantly lower postoperative taste scores compared to those with unexposed CTNs.
  • CI patients reporting subjective taste dysfunction showed a marked decrease in total taste scores.

Conclusions:

  • Postoperative gustatory dysfunction is a relevant side effect of cochlear implantation, especially within the first month.
  • Taste-strip gustometry is a valuable tool for objectively assessing taste function in CI patients.
  • Routine taste assessment using taste-strip tests is recommended for all cochlear implant recipients.