راهکارهای درمانی خاص در درمان لکنت زبان کلینیک تخصصی لکنت کرج جاده ملارد- خیابان سعدی جنوبی- انتهای گلستان دوم شهرک
Cox et al. (2005) to suggest that there is a common set of regions implicated in stutter¬ing. In addition, findings support the notion of sex-linked effects in the genetic component to the disorder, and also the possibility of different genet¬ically mediated strains; one of which may be more conducive to therapy and spontaneous recovery, and another which is associated with persistent stutter¬ing. These findings are of particular interest because some of the regions that are implicated have also been associated with other disorders, for example, the association between chromosome 7 with language disorder as earlier observed (Lai et al., 2001) and chromosome X and Down’s syndrome.
The potential contribution of genetic research to the understanding of stuttering is considerable. Researchers, clinicians and those who stutter alike await future findings on chromosomal function studies with eager anticipation.
Summary and some words of caution
There is compelling evidence from a number of studies that stuttering can be explained, at least in part, as a genetic disorder. However, the nature of the genetic component remains unclear. Cox et al. (1984) indicated that their data was best explained by a polygenetic model, whilst Ambrose et al. (1993) found evidence for a single major locus. In addition, the risk of stuttering may ultimately depend on the interaction of a number of factors (including environmental, linguistic, neurological, gender) alongside genetic components.
Caution must also be urged when examining even some of the apparently more basic findings in this area of research. First, it would apparently make sense that if we find a child to have no stuttering relatives that this means the individual can be considered at low risk to a genetic component for the disorder, but in fact this is not the case. Research in the field of mental disorders has shown that it is perfectly possible for the proband to be the only person in the family with the disorder, but for there to be a genetic cause (Eaves et al., 1986). Conversely, presence of stuttering among a number of