 A phonetic study conducted by the Laboratory for Sensory Investigations of [CONICET] and the University of Toronto showed that the intonation Porteño Spanish is unlike that of other Spanish varieties, and suggested that it may be a result of convergence with Italian.Italian immigration influenced "Lunfardo", the slang spoken in the Río de la Plata region, permeating the vernacular vocabulary of other regions as well.As in other large countries, the accents vary depending on geographical location.