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Scanning the stammering brain

Published online by Cambridge University Press:  13 June 2014

Caoimhghín S Breathnach
Caoimhghín S Breathnach*
Affiliation:
Division of Physiology, Department of Human Anatomy and Physiology, University College Dublin, Earlsfort Terrace, Dublin 2, Ireland
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Abstract

Stammering (or stuttering) may be defined as an impairment of continuous utterance. Developmental stammering, regardless of country or language, affects one per cent of adult populations. Exacerbation by the stress of adult conversation or public speaking contrasts sharply with normal flow during singing, acting or conversation with children. Alterations in regional cerebral blood flow suggest that there are underlying differences in sensorimotor function in developmental stammerers whose symptoms commonly appear during the period of intensive language acquisition around the third and fourth year. Emotional tensions may exacerbate the disturbance, but equally psychological growth is adversely affected by the handicap. Abnormal motor control is confirmed by the exaggerated activity in the right hemisphere. The normal sequence of articulatory programming and motor preparation for single word reading is reversed. Absence of activation over the left auditory cortex supports the notion of impaired or diminished auditory feedback in the self-monitoring of speech seen in normal brains. Subcortical abnormalities are a feature of both developmental and acquired stammering.

Keywords

Robert BoyleStammeringStutteringCortical abnormalities:Subcortical components.
Type
Reviews
Information
Irish Journal of Psychological Medicine , Volume 17 , Issue 4 , December 2000 , pp. 140 - 142
Copyright
Copyright © Cambridge University Press 2000

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References

1.Wollock, J. The noblest animate motion: speech, physiology and medicine in pre-Cartesian linguiststic thought. Philadelphia: John Benjamins Publishing Co. 1997; 242.CrossRefGoogle Scholar
2.Boyle, R. An account of Philaretus during his minority, in the works of the honourable Robert Boyle. Ed. Birch, T. London: 1772(2nd ed.); Vol 1: xiii–xiv.Google Scholar
3.Maddison, REW. The life of the honourable Robert Boyle FRS. London: Taylor and Francis, 1969. 125, citing Lorenzo Magalotti [1638–1704].Google Scholar
4.Hunter, M, Boyle, Robert, by himself and his friends London, Pickering. 1994; 89, quoting the letter of John Evelyn [1620–1706] to William Wotton 1666–1727.Google Scholar
5.Andrews, G, Craig, A, Feyer, AM, Hoddinott, S, Howie, P, Neilson, M. Stuttering: a review of research findings and theories circa 1982. J Speech Hear Disord 1983; 48: 226–46.CrossRefGoogle ScholarPubMed
6.Drayna, D, Kilshaw, J, Kelly, J. The sex ratio of familial persistent stuttering. Am J Hum Genet 1999; 65: 1473–85.CrossRefGoogle ScholarPubMed
7.de Ajuriaguerra, J. Speech disorders in childhood in Brain function III. Speech, language and communication. Ed. Carterette, EO. Berkeley: University of California Press, 1966; 117–40.Google Scholar
8.Wood, F, Stump, D, McKeehan, A, Sheldon, S, Proctor, J. Patterns of regional cerebral blood flow during attempted reading aloud by stutterers both on and off haloperidol medication: evidence for inadequate left frontal activation during stuttering. Brain Lang 1980; 9: 141–4.CrossRefGoogle ScholarPubMed
9.Pool, KD. Devons, MD, Freeman, FJ, Watson, BC, Finitzo, T. Regional cerebral blood flow in developmental stutterers. Arch Neurol 1991; 48: 509–12; 1992; 49: 346–8; 1993; 50: 1287–90.CrossRefGoogle ScholarPubMed
10.Wu, JCet al.A positron emission tomography [18F]deoxyglucose study of developmental stuttering. Neuroreport 1995; 6: 501–5.CrossRefGoogle ScholarPubMed
11.Fox, PTet al.A PET studv of the neural systems of stuttering. Nature 1996: 382: 158–62.CrossRefGoogle Scholar
12.Braun, ARet al.Altered patterns of cerebral activity during speech and language production in developmental stuttering. An H215O positron emission study. Brain 1997; 120: 763–84.CrossRefGoogle Scholar
13.Fox, PT, Ingram, RJ, Ingram, JC, Zamarripa, J, Xiong, J-H, Lancaster, JL. Brain correlates of stuttering and syllable production. Brain 2000; 123: 1905–2004.CrossRefGoogle ScholarPubMed
14.Sandak, R, Fiez, JA. Stuttering: a view from neuroimaging. Lancet 2000; 356: 446–7.CrossRefGoogle ScholarPubMed
15.Goldman-Rakic, P. Localisation of function all over again. Neuroimage 2000;11:451–7.CrossRefGoogle Scholar
16.Gazzaniga, MS. Cerebral specialisation and interhemispheric communication. Brain 2000; 123: 1293–326.CrossRefGoogle ScholarPubMed
17.Mesulam, M-M. From sensation to cognition. Brain 1998; 121: 1013–52.CrossRefGoogle ScholarPubMed
18.Salmelin, R, Schnitzler, A, Schmitz, F, Freund, H-J. Single word reading in developmental stutterers and fluent speakers. Brain 2000; 123: 1184–1202.CrossRefGoogle ScholarPubMed
19.Canter, G. Observations on neurogenic stuttering: a contribution to differential diagnosis. Br J Disordered Comm 1961; 6: 139–43.CrossRefGoogle Scholar
20.Andy, OJ, Bhatnagar, SC. Thalamic-induced stuttering (surgical observations). J Speech Hear Dis 1991; 34: 796–800.CrossRefGoogle ScholarPubMed
21.Bhatnagar, SC, Andy, OJ. Alleviation of acquired stuttering with human centomedian thalamic stimulation. J Neurol Neurosurg Psychiat 1989; 52: 1182–4.CrossRefGoogle ScholarPubMed
22.Muroi, A, Hirayama, K, Tanno, Y, Shimizu, S, Watanabe, T, Yamamoto, T. Cessation of stuttering after bilateral thalamic infarction. Neurology 1999; 53: 890–1.CrossRefGoogle ScholarPubMed