Recent Developments In Brain Imaging Research In Stuttering

Abstract

Abstract Ever since the formulation of the cerebral dominance theory (Orton 1928), researchers have speculated about potential involvement of aberrant neural processes in the onset and development of stuttering. Much of the earlier research into the nature of these hypothesized brain processes was based largely on the use of behavioural observations and electromyographical measures. Relevant observations included the relative slowness of laryngeal, respiratory, and articulatory reaction times in stuttering individuals (Bakker and Brutten 1989; Watson et al. 1991; Van Lieshout et al. 1993), the effects of auditory delayed feedback on the speech fluency of non-stuttering and stuttering speakers (Harrington 1987; Fukawa et al. 1988; Kalinowski et al. 1996), differences in dichotic listening and dual task interference performance between stuttering and non-stuttering speakers