Key Points. 1  Cancer treatment can cause mouth and throat problems. 2  Oral complications may be caused by the treatment itself (directly) or by side effects of the treatment (indirectly). 3  Complications may be acute (short-term) or chronic (long-lasting).
Language deprivation. Language deprivation is associated with the lack of linguistic stimuli that are necessary for the language acquisition processes in an individual, usually in a very impoverished environment. Experiments involving language deprivation are very scarce due to the ethical controversy associated with it.
Normally the transition from a spoken to an extinct language occurs when a language undergoes language death while being directly replaced by a different one. For example, some Native American languages were replaced by English, French, Portuguese, Spanish, or Dutch as a result of colonization.