In 2008, geneticists discovered a calcium receptor on the tongues of mice. The CaSR receptor is commonly found in the gastrointestinal tract, kidneys, and brain. Along with the "sweet" T1R3 receptor, the CaSR receptor can detect calcium as a taste. Whether the perception exists or not in humans is unknown. Temperature
Temperature can be an essential element of the taste experience. Heat can accentuate some flavors and decrease others by varying the density and phase equilibrium of a substance. Food and drink that—in a given culture—is traditionally served hot is often considered distasteful if cold, and vice versa. For example, alcoholic beverages, with a few exceptions, are usually thought best when served at room temperature or chilled to varying degrees, but soups—again, with exceptions—are usually only eaten hot. A cultural example are soft drinks. In North America it is almost always preferred cold, regardless of season. Starchiness
A 2016 study suggested that humans can taste starch (specifically, a glucose oligomer) independently of other tastes such as sweetness. However, no specific chemical receptor has yet been found for this taste. Nerve supply and neural connections
The glossopharyngeal nerve innervates a third of the tongue including the circumvallate papillae. The facial nerve innervates the other two thirds of the tongue and the cheek via the chorda tympani.The pterygopalatine ganglia are ganglia (one on each side) of the soft palate. The greater petrosal, lesser palatine  and zygomatic nerves all synapse here. The greater petrosal, carries soft palate taste signals to the facial nerve.
Susto (Spanish pronunciation: [ˈsusto], Portuguese pronunciation: [ˈsuʃtu]) is a cultural illness primarily among Latin American cultures. It is described as a condition of "chronic somatic suffering stemming from emotional trauma or from witnessing traumatic experiences lived by others". Symptoms
Among the indigenous peoples of Latin America, in which this illness is most common, susto may be conceptualized as a case of spirit attack. Symptoms of susto are thought to include nervousness, anorexia, insomnia, listlessness, fever, depression, and diarrhea. Treatment
Treatments among indigenous people are natural. Some natural treatments to susto consist of using plants as medicine; sweating out the toxins; and massaging to encourage blood flow. Prayer is a big part of the treatment of susto. In addition to prayer, healing rituals are also used, some of which include sweeping and giving gifts. Classification
Susto may be a culturally dependent variation of the symptoms of a panic attack, which is distinct from anxiety and depressive disorders. See also
Psychological trauma

References
Further reading
Rubel, Arthur J (July 1964). "The Epidemiology of a Folk Illness: Susto in Hispanic America". Ethnology. 3 (3): 268–283. doi:10.2307/3772883. JSTOR 3772883. Also published as Chapter 12 in Landy, David, ed. (1977). Culture, Disease, and Healing: Studies in Medical Anthropology. New York: Macmillan Press. ISBN 0-02-367390-7. Susto: The context of community morbidity patterns
Rubel, Arthur J; ONell, Carl W; Collado-Ardon, Rolando (1991). Susto A Folk Illness. University of California Press. ISBN 9780520076341. ONeil, Dennis. "Explanations of Illness". Medical Anthropology. ONeil. Retrieved 6 March 2013.