Function
As with other whistled forms of non-tonal languages, the Silbo works by retaining approximately the articulation of ordinary speech, so "the timbre variations of speech appear in the guise of pitch variations" (Busnel and Classe: v). The language is a whistled form of a dialect of Spanish.
Manuel Carreiras of the University of La Laguna and David Corina of the University of Washington published research on Silbo in 2004 and 2005 arguing that Silbo was understood by the brain in much the same way as a spoken language. Their study of speakers of Spanish (some of whom "spoke" Silbo and some of whom did not) showed (by monitoring brain activity with functional magnetic resonance imaging) that while non-speakers of Silbo merely processed Silbo as whistling, speakers of Silbo processed the whistling sounds in the same linguistic centers of the brain that processed Spanish sentences.
Read more about this topic: Silbo Gomero Language
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