+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

After repetitious sucrose stimulation saltiness suppression in sodium chloride sucrose mixtures is diminished implications for a central mixture suppression mechanism

, : After repetitious sucrose stimulation saltiness suppression in sodium chloride sucrose mixtures is diminished implications for a central mixture suppression mechanism. Chemical Senses 7(1): 81-92

Subjects estimated the saltiness of sequences of taste stimuli by a modified magnitude-estimation procedure. The last stimulus in a sequence was always a NaCl/sucrose mixture; the preceding stimuli were a number of sucrose stimuli. Sensory adaptation was prevented by choosing short stimulus durations and long inter-stimulus intervals and by mouth-rinsing between stimuli. Saltiness suppression in the mixture was diminished in a logarithmic-like way by habituation to NaCl, and this effect became more pronounced with increasing numbers of preceding sucrose stimuli. The steepness of the saltiness-recovery function depended on the amount of mixture suppression, and all functions converged at a point where mixture suppression was .apprx. 0. NaCl/sucrose mixtures may have excited 2 independent neuronal taste centers which have inhibitory projections to each other. A functional distinction between neural activity leading to intensity sensation and neural activity associated with mixture suppression were suggested.


Other references

Okano, H.; Sawamoto, K.; Nakao, N.; Kobayashi, K.; Matsushita, N.; Itakura, T.; Yoshizaki, T., 2001: Visualization, isolation and transplantation of dopaminergic neurons using TH-GFP reporter. We generated generated transgenic mice expressing GFP-reporter gene under the control of the rat tyrosine hydroxylase (TH) gene promoter (TH-GFP) in order to visualize and isolate live dopamine (DA)-producing neurons. In the transgenic mice, GFP e...

Han YaShan; Wang Qiang; Hirora, S., 1998: Study on the contents of vitamin A1 and vitamin A2 in fresh water fish livers. A high performance liquid chromatography technique for simultaneous determination of vitamin A1 and vitamin A2 in the livers of various freshwater fishes is described. Separation was achieved using a micro -Porasil column (3.9 x 150 mm), n-hexane:...

Loganathan, M.; Dakshinamurthy, A.; Singaravadivel, K., 2003: Susceptibility of paddy hybrids to Rhizopertha dominica (Fab.) in storage. Fourteen paddy hybrids stored at ambient conditions in plastic containers, maintaining Adt36 paddy cultivar as a control, were screened for susceptibility to lesser grain borer, Rhizopertha dominica [Rhyzopertha dominica]. The initial moisture con...

Schöldström, U., 1998: "Medical scandal of the century". What can be learned in the future from the Bristol experiences?. Lakartidningen 95(37): 3956-3957

Shimada-Brotto, D.; Gerson-Araujo, F., 2001: Habitat selection by fish in an artificial reef in Ilha Grande Bay, Brazil. The use of artificial structures as a shelter for fishes was evaluated aiming to assess increase in fish abundance in Ilha Grande Bay at Southeast Brazilian coast (Lat: 22degree8'-23degree5' S; Long. 44degree05'-44degree40'W)....

England, Angela, 1999: Distribution of the bats of eastern North America Feedback needed. Bat Research News 40(4): 169, Winter

Sanga, G. .; Ortalli, G. ., 2004: Nature knowledge: ethnoscience, cognition, and utility. Unknown

Sircar, S.; Taneja, V.A.; Kansra, U., 1998: ANA-negative SLE presenting with nephritis and oculomotor palsy--a case report. Most large series of patients with systemic lupus erythematosus (SLE) have revealed a very small group of patients who are persistently antinuclear antibody (ANA) negative with prominent dermatologic involvement but infrequent neurological and ren...

Andersson B., 1976: Stage of bone marrow derived cell maturity and thymus derived cell dependency of an antibody response. Scandinavian Journal of Immunology 5(4): 443

Gomes J.; Menawat A.S., 1992: Estimation of fermentation parameters using partial data. Frequently state variables in fermentation processes cannot be measured for the lack of sensors or interference. For example, in complex medium fermentations it is nearly impossible to obtain reliable estimates of the cell concentration. Absence o...