MovDisordV3, PascalFrancis, Corpus, bibRecord, 000C67

Idiopathic Spinal Myoclonus: A Clinical and Neurophysiological Assessment of a Movement Disorder of Uncertain Origin

Identifieur interne : 000C67 ( PascalFrancis/Corpus ); précédent : 000C66; suivant : 000C68

Idiopathic Spinal Myoclonus: A Clinical and Neurophysiological Assessment of a Movement Disorder of Uncertain Origin

Auteurs : Marcello Esposito ; Mark J. Edwards ; Kailash P. Bhatia ; Peter Brown ; Carla Cordivari

Source :

Movement disorders [ 0885-3185 ] ; 2009.

RBID : Pascal:10-0071253

Descripteurs français

Pascal (Inist)
- Myoclonie, Pathologie du système nerveux, Idiopathique, Psychogène, Neurophysiologie, Potentiel évoqué, Bereitschaftspotential.

English descriptors

KwdEn :
- Bereitschaftspotential, Evoked potential, Idiopathic, Myoclonus, Nervous system diseases, Neurophysiology, Psychogenic.

Abstract

Spinal Myoclonus (SM) is characterized by brief and sudden movements caused by the activation of muscles belonging to adjacent spinal myotomes. Recent reports have indicated that "typical" clinical and electrophysiological features of SM can be mimicked voluntarily. A useful tool that can distinguish between organic and psychogenic jerks is the detection of a Bereitschaftspotential (BP). In this study, we looked for evidence of a BP in a cohort of patients with idiopathic SM. A clinical and neurophysiological assessment of 20 patients affected by idiopathic SM was performed. A video EEG-EMG multichannel recording was performed in each patient to detect BP. An expert neurophysiologist (PB) reviewed the BP recordings and divided them into those showing a definite, possible, and no BP. A clinical assessment of the videoed movements was performed by two neurologists expert in movement disorders (KB and MJE) who indicated if the movements were compatible with organic or psychogenic myoclonus. A definite or possible BP was recorded in 15 out of 20 patients. Clinical raters agreed in their clinical opinion on 15 patients (75%). All patients where both raters agreed the movements appeared to be organic had definite or possible BP. BP are commonly seen in patients with idiopathic SM. There is discordance between clinicians in their clinical rating of SM as organic or psychogenic, but even in those patients where movements appear clinically to be organic, a BP is commonly detected, indicating that the aetiology is psychogenic. This suggests that BP recordings are a useful adjunct to clinical assessment in the accurate diagnosis of patients with idiopathic SM.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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A11	`04`	`1`		`@1 BROWN (Peter)`
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A14	`01`			`@1 Department of Clinical Neurophysiology, National Hospital for Neurology and Neurosurgery, Queen Square @2 London @3 GBR @Z 1 aut. @Z 5 aut.`
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C01	`01`		`ENG`	@0 Spinal Myoclonus (SM) is characterized by brief and sudden movements caused by the activation of muscles belonging to adjacent spinal myotomes. Recent reports have indicated that "typical" clinical and electrophysiological features of SM can be mimicked voluntarily. A useful tool that can distinguish between organic and psychogenic jerks is the detection of a Bereitschaftspotential (BP). In this study, we looked for evidence of a BP in a cohort of patients with idiopathic SM. A clinical and neurophysiological assessment of 20 patients affected by idiopathic SM was performed. A video EEG-EMG multichannel recording was performed in each patient to detect BP. An expert neurophysiologist (PB) reviewed the BP recordings and divided them into those showing a definite, possible, and no BP. A clinical assessment of the videoed movements was performed by two neurologists expert in movement disorders (KB and MJE) who indicated if the movements were compatible with organic or psychogenic myoclonus. A definite or possible BP was recorded in 15 out of 20 patients. Clinical raters agreed in their clinical opinion on 15 patients (75%). All patients where both raters agreed the movements appeared to be organic had definite or possible BP. BP are commonly seen in patients with idiopathic SM. There is discordance between clinicians in their clinical rating of SM as organic or psychogenic, but even in those patients where movements appear clinically to be organic, a BP is commonly detected, indicating that the aetiology is psychogenic. This suggests that BP recordings are a useful adjunct to clinical assessment in the accurate diagnosis of patients with idiopathic SM.
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C03	`06`	`X`	`FRE`	`@0 Potentiel évoqué @5 12`
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C03	`06`	`X`	`SPA`	`@0 Potencial evocado @5 12`
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C07	`01`	`X`	`ENG`	`@0 Involuntary movement @5 37`
C07	`01`	`X`	`SPA`	`@0 Movimiento involuntario @5 37`
C07	`02`	`X`	`FRE`	`@0 Trouble neurologique @5 39`
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Format Inist (serveur)

NO :	PASCAL 10-0071253 INIST
ET :	Idiopathic Spinal Myoclonus: A Clinical and Neurophysiological Assessment of a Movement Disorder of Uncertain Origin
AU :	ESPOSITO (Marcello); EDWARDS (Mark J.); BHATIA (Kailash P.); BROWN (Peter); CORDIVARI (Carla)
AF :	Department of Clinical Neurophysiology, National Hospital for Neurology and Neurosurgery, Queen Square/London/Royaume-Uni (1 aut., 5 aut.); Sobell Department of Motor Neuroscience and Movement Disorders, Institute of Neurology, UCL, Queen Square/London/Royaume-Uni (2 aut., 3 aut., 4 aut.)
DT :	Publication en série; Niveau analytique
SO :	Movement disorders; ISSN 0885-3185; Etats-Unis; Da. 2009; Vol. 24; No. 16; Pp. 2344-2349; Bibl. 17 ref.
LA :	Anglais
EA :	Spinal Myoclonus (SM) is characterized by brief and sudden movements caused by the activation of muscles belonging to adjacent spinal myotomes. Recent reports have indicated that "typical" clinical and electrophysiological features of SM can be mimicked voluntarily. A useful tool that can distinguish between organic and psychogenic jerks is the detection of a Bereitschaftspotential (BP). In this study, we looked for evidence of a BP in a cohort of patients with idiopathic SM. A clinical and neurophysiological assessment of 20 patients affected by idiopathic SM was performed. A video EEG-EMG multichannel recording was performed in each patient to detect BP. An expert neurophysiologist (PB) reviewed the BP recordings and divided them into those showing a definite, possible, and no BP. A clinical assessment of the videoed movements was performed by two neurologists expert in movement disorders (KB and MJE) who indicated if the movements were compatible with organic or psychogenic myoclonus. A definite or possible BP was recorded in 15 out of 20 patients. Clinical raters agreed in their clinical opinion on 15 patients (75%). All patients where both raters agreed the movements appeared to be organic had definite or possible BP. BP are commonly seen in patients with idiopathic SM. There is discordance between clinicians in their clinical rating of SM as organic or psychogenic, but even in those patients where movements appear clinically to be organic, a BP is commonly detected, indicating that the aetiology is psychogenic. This suggests that BP recordings are a useful adjunct to clinical assessment in the accurate diagnosis of patients with idiopathic SM.
CC :	002B17; 002B16B
FD :	Myoclonie; Pathologie du système nerveux; Idiopathique; Psychogène; Neurophysiologie; Potentiel évoqué; Bereitschaftspotential
FG :	Mouvement involontaire; Trouble neurologique; Electrophysiologie
ED :	Myoclonus; Nervous system diseases; Idiopathic; Psychogenic; Neurophysiology; Evoked potential; Bereitschaftspotential
EG :	Involuntary movement; Neurological disorder; Electrophysiology
SD :	Mioclonia; Sistema nervioso patología; Idiopático; Psicógeno; Neurofisiología; Potencial evocado; Bereitschaftspotential
LO :	INIST-20953.354000190005540050
ID :	10-0071253

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Pascal:10-0071253

Le document en format XML

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<front><div type="abstract" xml:lang="en">Spinal Myoclonus (SM) is characterized by brief and sudden movements caused by the activation of muscles belonging to adjacent spinal myotomes. Recent reports have indicated that "typical" clinical and electrophysiological features of SM can be mimicked voluntarily. A useful tool that can distinguish between organic and psychogenic jerks is the detection of a Bereitschaftspotential (BP). In this study, we looked for evidence of a BP in a cohort of patients with idiopathic SM. A clinical and neurophysiological assessment of 20 patients affected by idiopathic SM was performed. A video EEG-EMG multichannel recording was performed in each patient to detect BP. An expert neurophysiologist (PB) reviewed the BP recordings and divided them into those showing a definite, possible, and no BP. A clinical assessment of the videoed movements was performed by two neurologists expert in movement disorders (KB and MJE) who indicated if the movements were compatible with organic or psychogenic myoclonus. A definite or possible BP was recorded in 15 out of 20 patients. Clinical raters agreed in their clinical opinion on 15 patients (75%). All patients where both raters agreed the movements appeared to be organic had definite or possible BP. BP are commonly seen in patients with idiopathic SM. There is discordance between clinicians in their clinical rating of SM as organic or psychogenic, but even in those patients where movements appear clinically to be organic, a BP is commonly detected, indicating that the aetiology is psychogenic. This suggests that BP recordings are a useful adjunct to clinical assessment in the accurate diagnosis of patients with idiopathic SM.</div>
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</fC03>
<fC03 i1="06" i2="X" l="ENG"><s0>Evoked potential</s0>
<s5>12</s5>
</fC03>
<fC03 i1="06" i2="X" l="SPA"><s0>Potencial evocado</s0>
<s5>12</s5>
</fC03>
<fC03 i1="07" i2="X" l="FRE"><s0>Bereitschaftspotential</s0>
<s4>CD</s4>
<s5>96</s5>
</fC03>
<fC03 i1="07" i2="X" l="ENG"><s0>Bereitschaftspotential</s0>
<s4>CD</s4>
<s5>96</s5>
</fC03>
<fC03 i1="07" i2="X" l="SPA"><s0>Bereitschaftspotential</s0>
<s4>CD</s4>
<s5>96</s5>
</fC03>
<fC07 i1="01" i2="X" l="FRE"><s0>Mouvement involontaire</s0>
<s5>37</s5>
</fC07>
<fC07 i1="01" i2="X" l="ENG"><s0>Involuntary movement</s0>
<s5>37</s5>
</fC07>
<fC07 i1="01" i2="X" l="SPA"><s0>Movimiento involuntario</s0>
<s5>37</s5>
</fC07>
<fC07 i1="02" i2="X" l="FRE"><s0>Trouble neurologique</s0>
<s5>39</s5>
</fC07>
<fC07 i1="02" i2="X" l="ENG"><s0>Neurological disorder</s0>
<s5>39</s5>
</fC07>
<fC07 i1="02" i2="X" l="SPA"><s0>Trastorno neurológico</s0>
<s5>39</s5>
</fC07>
<fC07 i1="03" i2="X" l="FRE"><s0>Electrophysiologie</s0>
<s5>40</s5>
</fC07>
<fC07 i1="03" i2="X" l="ENG"><s0>Electrophysiology</s0>
<s5>40</s5>
</fC07>
<fC07 i1="03" i2="X" l="SPA"><s0>Electrofisiología</s0>
<s5>40</s5>
</fC07>
<fN21><s1>046</s1>
</fN21>
<fN44 i1="01"><s1>OTO</s1>
</fN44>
<fN82><s1>OTO</s1>
</fN82>
</pA>
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<server><NO>PASCAL 10-0071253 INIST</NO>
<ET>Idiopathic Spinal Myoclonus: A Clinical and Neurophysiological Assessment of a Movement Disorder of Uncertain Origin</ET>
<AU>ESPOSITO (Marcello); EDWARDS (Mark J.); BHATIA (Kailash P.); BROWN (Peter); CORDIVARI (Carla)</AU>
<AF>Department of Clinical Neurophysiology, National Hospital for Neurology and Neurosurgery, Queen Square/London/Royaume-Uni (1 aut., 5 aut.); Sobell Department of Motor Neuroscience and Movement Disorders, Institute of Neurology, UCL, Queen Square/London/Royaume-Uni (2 aut., 3 aut., 4 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Movement disorders; ISSN 0885-3185; Etats-Unis; Da. 2009; Vol. 24; No. 16; Pp. 2344-2349; Bibl. 17 ref.</SO>
<LA>Anglais</LA>
<EA>Spinal Myoclonus (SM) is characterized by brief and sudden movements caused by the activation of muscles belonging to adjacent spinal myotomes. Recent reports have indicated that "typical" clinical and electrophysiological features of SM can be mimicked voluntarily. A useful tool that can distinguish between organic and psychogenic jerks is the detection of a Bereitschaftspotential (BP). In this study, we looked for evidence of a BP in a cohort of patients with idiopathic SM. A clinical and neurophysiological assessment of 20 patients affected by idiopathic SM was performed. A video EEG-EMG multichannel recording was performed in each patient to detect BP. An expert neurophysiologist (PB) reviewed the BP recordings and divided them into those showing a definite, possible, and no BP. A clinical assessment of the videoed movements was performed by two neurologists expert in movement disorders (KB and MJE) who indicated if the movements were compatible with organic or psychogenic myoclonus. A definite or possible BP was recorded in 15 out of 20 patients. Clinical raters agreed in their clinical opinion on 15 patients (75%). All patients where both raters agreed the movements appeared to be organic had definite or possible BP. BP are commonly seen in patients with idiopathic SM. There is discordance between clinicians in their clinical rating of SM as organic or psychogenic, but even in those patients where movements appear clinically to be organic, a BP is commonly detected, indicating that the aetiology is psychogenic. This suggests that BP recordings are a useful adjunct to clinical assessment in the accurate diagnosis of patients with idiopathic SM.</EA>
<CC>002B17; 002B16B</CC>
<FD>Myoclonie; Pathologie du   système nerveux; Idiopathique; Psychogène; Neurophysiologie; Potentiel évoqué; Bereitschaftspotential</FD>
<FG>Mouvement involontaire; Trouble neurologique; Electrophysiologie</FG>
<ED>Myoclonus; Nervous system diseases; Idiopathic; Psychogenic; Neurophysiology; Evoked potential; Bereitschaftspotential</ED>
<EG>Involuntary movement; Neurological disorder; Electrophysiology</EG>
<SD>Mioclonia; Sistema nervioso patología; Idiopático; Psicógeno; Neurofisiología; Potencial evocado; Bereitschaftspotential</SD>
<LO>INIST-20953.354000190005540050</LO>
<ID>10-0071253</ID>
</server>
</inist>
</record>

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	Movement Disorders (revue)
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Movement Disorders (revue)

Idiopathic Spinal Myoclonus: A Clinical and Neurophysiological Assessment of a Movement Disorder of Uncertain Origin

Idiopathic Spinal Myoclonus: A Clinical and Neurophysiological Assessment of a Movement Disorder of Uncertain Origin

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