Ivyigwa vyakozwe hisunzwe amasanamu uraba harimwo ijwi (IRM) vyagaragaje ubwa mbere ko hariho "uturongo tudasa" mu bwonko bw'abana bakoresha amatelefone ngendanwa agezweho (Smartphones) ama tabulete n'inkino za video amasaha arenze indwi ku musi, nk'uko bisigurwa n'uwurongoye abagize ivyo vyigwa Dr Gaya Dowling.
