DUPLEXITY THEORY OF TASTE.
When two different taste stimuli are presented, one to the left and the other to the right side of the tongue, they may add together to a sensation in the middle of the tongue, or they may stay separated. This phenomenon can be used to show that the four primary taste sensations seem to form two well-differentiated groups. Warm and cold stimuli act similarly to the four primary taste stimuli, thus separating the sensations on the tongue into two groups: bitter, warm, sweet; and sour, cold, salty.
D035843:Biomedical Research; D003080:Cold Temperature; D006358:Hot Temperature; D006801:Humans; D006851:Hydrochloric Acid; D010827:Physiology; D011803:Quinine; D012965:Sodium Chloride; D013395:Sucrose; D013649:Taste; D013650:Taste Buds; D014059:Tongue
D012965:Sodium Chloride; D013395:Sucrose; D011803:Quinine; D006851:Hydrochloric Acid
CLINICAL RESEARCH; COLD; HEAT; HYDROCHLORIC ACID; PHYSIOLOGY; QUININE; SODIUM CHLORIDE; SUCROSE; TASTE; TASTE BUDS