Article (Scientific journals)
Neural correlates of tic generation in Tourette syndrome: an event-related functional MRI study.
Bohlhalter, Stephan; Goldfine, Andrew; Matteson, S. et al.
2006In Brain: a Journal of Neurology, 129 (Pt 8), p. 2029-37
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Keywords :
Adult; Blinking; Brain/physiopathology; Brain Mapping/methods; Female; Humans; Image Processing, Computer-Assisted; Limbic System/physiopathology; Magnetic Resonance Imaging; Male; Middle Aged; Motor Activity; Tourette Syndrome/physiopathology
Abstract :
[en] Little is known about the neural correlates of tics and associated urges. In the present study, we aimed to explore the neural basis of tics in patients with Tourette syndrome by using event-related functional MRI (fMRI). Ten patients (6 women, 4 men; age: mean +/- SD = 31 +/- 11.2) were studied while spontaneously exhibiting a variety of motor and vocal tics. On the basis of synchronized video/audio recordings, fMRI activities were analysed 2 s before and at tic onset irrespective of the clinical phenomenology. We identified a brain network of paralimbic areas such as anterior cingulate and insular cortex, supplementary motor area (SMA) and parietal operculum (PO) predominantly activated before tic onset (P < 0.05, corrected for multiple comparisons). In contrast, at the beginning of tic action, significant fMRI activities were found in sensorimotor areas including superior parietal lobule bilaterally and cerebellum. The results of this study indicate that paralimbic and sensory association areas are critically implicated in tic generation, similar to movements triggered internally by unpleasant sensations, as has been shown for pain or itching.
Disciplines :
Neurology
Radiology, nuclear medicine & imaging
Author, co-author :
Bohlhalter, Stephan;  Human Motor Control Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA
Goldfine, Andrew;  Human Motor Control Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA
Matteson, S.;  Human Motor Control Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA
Garraux, Gaëtan  ;  Université de Liège - ULiège & Human Motor Control Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA
Hanakawa, Takashi;  Human Motor Control Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA
Kansaku, Kenji;  Human Motor Control Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA
Wurzman, Rachel;  Human Motor Control Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA
Hallett, Mark;  Human Motor Control Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA
Language :
English
Title :
Neural correlates of tic generation in Tourette syndrome: an event-related functional MRI study.
Publication date :
2006
Journal title :
Brain: a Journal of Neurology
ISSN :
0006-8950
eISSN :
1460-2156
Publisher :
Oxford University Press, Oxford, United Kingdom
Volume :
129
Issue :
Pt 8
Pages :
2029-37
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
NINDS - National Institute of Neurological Disorders and Stroke [US-MD]
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