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Chem. Senses 24: 19-21, 1999
© Oxford University Press

The Perceived Intensity of Caffeine Aftertaste: Tasters Versus Nontasters

Greg Neely and Gunnar Borg1

Umeå University, Umeå 1 Stockholm University, Stockholm, Sweden

Correspondence to be sent to: Greg Neely, Department of Psychology, Umeå University, 901 87 Umeå, Sweden. e-mail greg.neely{at}psy.umu.se

The length and intensity of the aftertaste of caffeine was measured in groups of tasters and nontasters in order to determine if any differential information could be provided by aftertaste perception. Results indicate that a period of 4 min is sufficient to see differences between tasters and nontasters, and that nontasters' aftertaste of the saturated solution is equal in intensity with tasters perception immediately after stimulus presentation, but then after ~ 1 min fade faster. Nontaster ratings for the weaker solution were lower throughout the entire time period.


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