When two taste stimuli are presented, one to each side of the tongue, with a time delay of up to 1 msec., the taste sensation seems to move across the tongue. This phenomenon which is similar to directional hearing, can be used to show periodic fluctuations in sensation magnitude as well as other aspects of sensation. When the apparatus was refined to present taste stimuli, it was possible to o...

Considerable mechanistic data indicate there may be a sixth basic taste: fat. However, evidence demonstrating that the sensation of nonesterified fatty acids (NEFA, the proposed stimuli for "fat taste") differs qualitatively from other tastes is lacking. Using perceptual mapping, we demonstrate that medium and long-chain NEFA have a taste sensation that is distinct from other basic tastes (swee...

Taste sensation on the anterior tongue requires chorda tympani nerve function and connections with continuously renewing taste receptor cells. However, it is unclear which signaling pathways regulate the receptor cells to maintain chorda tympani sensation. Hedgehog (HH) signaling controls cell proliferation and differentiation in numerous tissues and is active in taste papillae and taste buds. ...

The Food Simulator is a haptic interface that presents biting force. A taste of food arises from mixture of chemical, auditory, olfactory and haptic sensation. Haptic sensation while eating is a remained problem in taste display. The Food Simulator generates force to the user’s teeth to display food texture. The device is composed of four linkages. The mechanical configuration of the device is ...

Until now, taste was the only primary sensory modality for which the human central nervous system pathways were unknown. We report sensations evoked by stimulation at microampere current levels in the region of the human thalamic nucleus (ventralis caudalis parvocellularis internis) corresponding to the monkey taste relay nucleus. Stimulation in this region during awake neurosurgical procedures...

Background and Objectives: Taste sensation has a significant evolutionary, nutritional protective role in human beings. Changes the perception of taste can significantly affect overall quality life an individual. A proportion patients with changes such as ageusia (complete loss taste), hypogeusia (diminished sensation), dysgeusia (altered/distorted including phantoms like metallic/bitter taste)...

Food flavour is important in appetite control. The effects of aroma and taste, independently or in combination, on appetite sensation and subsequent food intake, were studied. Twenty-six females (24 ± 4 years, 20.9 ± 1.9 kg,m 2) consumed, over 15 min period, one of four sample drinks as a preload, followed by an ad libitum consumption of a pasta meal (after 65 min). Sample drinks were: water (S...

We report the case of a 16-year-old female patient with taste impairment of the soft palate. After receiving a skull fracture due to a traffic accident, she experienced the taste of bitter chocolate. CT showed the fracture around the right temporal bone. Electrogustometry showed that the decreased sensation of taste was restricted to the right soft palate. Shirmer test showed that lacrimal secr...

BACKGROUND Burning mouth syndrome (BMS) is a chronic, intraoral burning sensation seen mainly in middle-aged and post-menopausal females, without identifiable oral lesions or abnormal laboratory findings, but often associated with psychogenic disorders such as depression. The latter can have a range of causes, including hormonal. OBJECTIVE Since there may be connections between BMS, psychogen...