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Taste. Robust across the age span?

L M Bartoshuk1

  • 1John B. Pierce Foundation Laboratory, New Haven, Connecticut.

Annals of the New York Academy of Sciences
|January 1, 1989
PubMed
Summary
This summary is machine-generated.

Localized taste loss, often unnoticed, occurs more in the elderly. The taste system

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Area of Science:

  • Neuroscience
  • Sensory Science
  • Gerontology

Background:

  • Discrete taste loss in specific tongue/palate areas is not well understood.
  • Previous studies identified losses in groups with head trauma, respiratory infections, and bulimia.

Purpose of the Study:

  • To investigate the prevalence and characteristics of discrete taste losses in elderly subjects.
  • To explore the reasons why localized taste loss often goes unnoticed.

Main Methods:

  • Assessed taste thresholds in elderly subjects.
  • Examined the impact of localized taste loss on overall taste perception.
  • Investigated the sensory mechanisms, including neural inhibition and taste localization illusions, that may mask taste deficits.

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Main Results:

  • Elderly subjects exhibit elevated taste thresholds for certain stimuli.
  • Discrete taste losses are more frequent in the elderly but typically undetected.
  • Sensory phenomena like neural inhibition and poor taste localization contribute to the failure to notice taste deficits.

Conclusions:

  • Localized taste loss is more common in the elderly than previously recognized.
  • The taste system possesses redundancy and mechanisms to maintain perceived taste intensity.
  • These findings suggest taste's critical biological functions and the need for further research into age-related taste changes.