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There were no differences between the two groups of speakers, suggesting that the stutterers did not have abnormally high levels of autonomic activation in speech. Within the group of stutterers, the more extreme increases in arousal (specifically increases in measures reflecting sympathetic arousal) were correlated with the occurrence and increased severity of disfluent speech. Significant correlations were found for the intervals prior to, during, and after speech. Although significantly correlated with disfluency, measures of autonomic arousal accounted for small percentages of the variances of fluency and severity. The results are consistent with the hypothesis that sympathetic arousal accompanies the breakdowns in speech motor processes characteristic of stuttering. Mechanisms linking autonomic nervous system functions and somatic sensorimotor processes involved in speech production are discussed.<\/jats:p>","DOI":"10.1044\/jshr.3304.690","type":"journal-article","created":{"date-parts":[[2014,7,29]],"date-time":"2014-07-29T21:22:56Z","timestamp":1406668976000},"page":"690-706","source":"Crossref","is-referenced-by-count":116,"title":["Autonomic Correlates of Stuttering and Speech Assessed in a Range of Experimental Tasks"],"prefix":"10.1044","volume":"33","author":[{"given":"Christine M.","family":"Weber","sequence":"first","affiliation":[{"name":"Purdue University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anne","family":"Smith","sequence":"additional","affiliation":[{"name":"Purdue University"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1310","reference":[{"key":"e_1_3_2_2_1","first-page":"5A","article-title":"Sympathetic modulation of the jaw-opening reflex in rabbits","volume":"126","author":"Aars H.","year":"1986","journal-title":"Acta Physiologica Scandinavica"},{"key":"e_1_3_2_3_1","doi-asserted-by":"crossref","first-page":"35","DOI":"10.1016\/S0094-730X(74)80005-7","article-title":"A physiologic interpretation of fluent and stuttered speech","volume":"1","author":"Adams M. 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