Changes in Neuromuscular Irritability in Balbuties of Children and Adolescents

Decreased serum copper level in developmental stutterers

“…Within our studies on stutterers, focused on neuromuscular irritability (Pešák et al ., 1990) and mechanical events connected with an uncertain phonation start (‘a vibratio brevis phenomenon’– VBP) (Pešák and Urbánek, 1993b), we conducted biochemical investigations, including the assessment of the level of serum ions. In a relatively high number of stutterers, we have revealed a hitherto undescribed finding – a decrease in the serum copper level (SCL).…”