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Testing gustatory function using either a forced-choice or a non-forced-choice paradigm - Does it make a difference?

G Besser1, A Prassl2, C A Mueller1

  • 1Department of Otorhinolaryngology and Head and Neck Surgery, Medical University of Vienna, Austria.

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Summary
This summary is machine-generated.

Taste strips (TS) are effective for assessing gustatory function. Bitter taste perception was slightly higher using the forced-choice method compared to non-forced-choice, indicating procedural differences matter.

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Area of Science:

  • Sensory science
  • Neuroscience
  • Otorhinolaryngology

Background:

  • Growing interest in gustatory function research, including extraoral taste receptors.
  • Potential role of taste receptors in pathogen detection.
  • Reduced bitter taste function observed in chronic rhinosinusitis patients.

Purpose of the Study:

  • To evaluate differences in gustatory function testing using taste strips (TS).
  • To compare forced-choice (fc) and non-forced-choice (nfc) paradigms for taste assessment.

Main Methods:

  • 102 healthy subjects and 30 patients with potential taste dysfunction were tested.
  • Participants underwent two testing sessions using TS with four taste concentrations (sweet, sour, salty, bitter).
  • Testing order (fc or nfc first) was alternated between sessions.

Main Results:

  • Patients showed higher bitter taste scores with the fc procedure compared to nfc.
  • Overall participants also exhibited higher bitter taste scores in the fc procedure.
  • No significant differences were found for sweet, sour, or salty taste between paradigms.

Conclusions:

  • Taste strips (TS) are validated for both forced-choice (fc) and non-forced-choice (nfc) testing paradigms.
  • Bitter taste perception may be slightly overestimated in fc testing.
  • Researchers studying bitter taste should consider the testing procedure when interpreting results.