吃音の生理学的特徴とは何か : 吃音者と非吃音者間の生理学的差異について

抄録

Recent studies have claimed that stuttering is a multifactor, dynamic disorder that emerges from the nonlinear interaction of many heterogeneous systems. For this reason, many recent studies of stuttering have investigated relations between 2 factors, instead of observing 1 specific difference between people who stutter and those who do not. Although many studies have revealed physiological characteristics of adults who stutter, only a limited number of studies has focused on physiological aspects of children who stutter. As Kelly, Smith, and Goffman (1995) noted, no significant differences have been found between young children who do and do not stutter in terms of articulatory movements while producing fluent speech. Kelly et al. (1995) found significant differences only between older children who stutter and age-matched children who do not. Because physiological factors may impact stuttering but do not cause stuttering, the direction of research has shifted to brain studies. Even so, physiological studies should also be continued, as they may reveal why physiological differences are found only between older children and adults who stutter and those who do not, and not in younger children.