Taste,odor, and tactile discrimination before and after smoking

Differential sensitivity was measured before and after smoking a cigarette by seven smokers, using six non-smokers as controls. Stimuli consisted of the tastes of sucrose, sodium chloride, citric acid, caffeine, and quinine hydrochloride; the odors of vanillin and 2-butanone; and the viscosity produced by a carrageenan gum. No significant jnds were observed between smokers and non-smokers, nor before vs after smoking. Therefore, the data supported neither longterm nor short-term influences of cigarette smoking. Practice effects were noted among the control group, as more correct responses were obtained on the second than on the first set of solutions in most of the test stimuli.