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Urban PP, Hertkorn C, Schattenberg JM, Gawehn J, Hägele S, Wunsch M, Altland K. Leptomeningeal familial amyloidosis: A rare differential diagnosis of leptomeningeal enhancement in MRI. J Neurol 2006; 253:1238-40. [PMID: 16990995 DOI: 10.1007/s00415-006-0169-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2005] [Accepted: 01/31/2006] [Indexed: 11/25/2022]
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Haegele-Link S, Bohl J, Karajanev P, Urban PP. Chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) as rare differential diagnosis of a dropped head syndrome. KLIN NEUROPHYSIOL 2006. [DOI: 10.1055/s-2006-939159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Marx JJ, Thoemke F, Iannetti GD, Fitzek S, Urban PP, Stoeter P, Cruccu G, Hopf HC, Dieterich M. Topodiagnostic significance of hemiataxia: a MRI based mapping analysis. KLIN NEUROPHYSIOL 2006. [DOI: 10.1055/s-2006-939235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Urban PP, Rolke R, Wicht S, Keilmann A, Stoeter P, Hopf HC, Dieterich M. Left-hemispheric dominance for articulation: a prospective study on acute ischaemic dysarthria at different localizations. Brain 2006; 129:767-77. [PMID: 16418180 DOI: 10.1093/brain/awh708] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Dysarthria is a frequent symptom in cerebral ischaemia. However, speech characteristics of these patients have not previously been investigated in relation to lesion site in a prospective study. We investigated the auditory perceptual features in 62 consecutive patients with dysarthria due to a single, non-space-occupying cerebral infarction confirmed by MRI. Standardized speech samples of all patients were stored within 72 h after stroke onset using a digital tape recorder. Speech samples were assessed independently by two experienced speech therapists, who were unaware of the clinical and neuroradiological findings, using an interval scale ranging from 0 to 6. Separately assessed were features of articulation, phonation, prosody, and the global severity for a total of 31 items. Extracerebellar infarctions (85.5%) were located in the lower motor cortex (14.5%), striatocapsular region (46.8%) and base of the pons (24.2%). Isolated cerebellar infarctions were present in 14.5% of patients. There was a strong correlation between the findings of both examiners, showing identical scores, or only minor differences (<1 on the assessment scale) for 80% of all items. The average severity of dysarthria was 2.9 +/- 1.3. Articulatory abnormalities were the predominant deviation characteristics, affecting in particular the production of consonants. However, phonatory and prosodic abnormalities were also frequently observed speech characteristics. As revealed by factor analysis of speech characteristics the total severity of dysarthria was mainly influenced by the impairment of articulation. Speech parameters describing characteristics of articulation and prosody showed significant side-to-side and area differences, while this effect was lacking for any voice parameter. Left cerebral lesions showed a more severe overall impairment of speech and articulation, independent of lesion topography. Thirty-eight of 62 patients were available for follow-up. Speech evaluation showed normal speech within weeks in 15 out of 38 patients (39.5%). In the other 23 patients overall severity of dysarthria was mild. This is the first prospective study which describes speech characteristics of dysarthria due to acute unilateral cerebral infarctions. We could demonstrate that dysarthria in extracerebellar infarctions was more frequently caused by left-sided lesions and that the severity of dysarthria was more pronounced in left-sided lesions independent from lesion topography. All extracerebellar lesions were located along the course of the cortico-bulbar tract fibres. Compatible with a common pathophysiological basis of dysarthria in these patients, none of the 31 speech items differed significantly between subcortical and brainstem lesions.
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Marx JJ, Iannetti GD, Thoemke F, Fitzek S, Urban PP, Stoeter P, Dieterich M, Cruccu G, Hopf HC. 3D brainstem topodiagnosis--a voxel-based model analyzing MR imaging data. SUPPLEMENTS TO CLINICAL NEUROPHYSIOLOGY 2006; 58:26-37. [PMID: 16623320 DOI: 10.1016/s1567-424x(09)70057-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
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Urban PP, Müller-Forell W. Clinical and neuroradiological spectrum of isolated cortical vein thrombosis. J Neurol 2005; 252:1476-81. [PMID: 16021356 DOI: 10.1007/s00415-005-0893-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2004] [Revised: 03/24/2005] [Accepted: 04/14/2005] [Indexed: 10/25/2022]
Abstract
BACKGROUND Isolated cortical vein thrombosis is only rarely diagnosed, although it may commonly be overlooked. RESULTS We report on four patients with this diagnosis who all presented with focal sensorimotor seizures. The diagnosis was made by a typical CT and MRI-pattern, which is described in detail. CONCLUSIONS The prognosis was excellent in all patients and the treatment options are discussed.
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Thömke F, Marx JJ, Iannetti GD, Cruccu G, Fitzek S, Urban PP, Stoeter P, Dieterich M, Hopf HC. A topodiagnostic investigation on body lateropulsion in medullary infarcts. Neurology 2005; 64:716-8. [PMID: 15728299 DOI: 10.1212/01.wnl.0000152040.27264.1a] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Body lateropulsion may occur without signs of vestibular dysfunction and vestibular nucleus involvement. The authors examined 10 such patients with three-dimensional brainstem mapping. Body lateropulsion without limb ataxia reflected an impairment of vestibulospinal postural control caused by a lesion of the descending lateral vestibulospinal tract, whereas body lateropulsion with limb ataxia was probably the consequence of impaired or absent proprioceptive information caused by a lesion of the ascending dorsal spino-cerebellar tract.
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Marx JJ, Iannetti GD, Thömke F, Fitzek S, Urban PP, Stoeter P, Cruccu G, Dieterich M, Hopf HC. Somatotopic organization of the corticospinal tract in the human brainstem: A MRI-based mapping analysis. Ann Neurol 2005; 57:824-31. [PMID: 15852473 DOI: 10.1002/ana.20487] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
To investigate the incompletely understood somatotopical organization of the corticospinal tract in the human brainstem, we performed a voxel-based statistical analysis of standardized magnetic resonance scans of 41 prospectively recruited patients with pyramidal tract dysfunction caused by acute brainstem infarction. Motor hemiparesis was rated clinically and by the investigation of motor evoked potentials to arms and legs. Infarction affected the pons in 85% of cases. We found the greatest level of significance of affected brainstem areas between the pontomesencephalic junction and the mid pons. Lesion location was significantly more dorsal in patients with hemiparesis affecting more proximal muscles and was significantly more ventral in patients with predominantly distal limb paresis. Comparison of magnetic resonance lesion from patients with paresis predominantly affecting arm or leg did not show significant topographical differences. We conclude that a topographical arm/leg distribution of corticospinal fibers is abruptly broken down as the descending corticospinal tract traverses the pons. Corticospinal fibers, however, follow a somatotopical order in the pons with fibers controlling proximal muscles being located close to the reticular formation in the dorsal pontine base, and thus more dorsal than the fibers controlling further distal muscle groups.
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Cruccu G, Iannetti GD, Marx JJ, Thoemke F, Truini A, Fitzek S, Galeotti F, Urban PP, Romaniello A, Stoeter P, Manfredi M, Hopf HC. Brainstem reflex circuits revisited. Brain 2004; 128:386-94. [PMID: 15601661 DOI: 10.1093/brain/awh366] [Citation(s) in RCA: 119] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Our current understanding of brainstem reflex physiology comes chiefly from the classic anatomical-functional correlation studies that traced the central circuits underlying brainstem reflexes and establishing reflex abnormalities as markers for specific areas of lesion. These studies nevertheless had the disadvantage of deriving from post-mortem findings in only a few patients. We developed a voxel-based model of the human brainstem designed to import and normalize MRIs, select groups of patients with or without a given dysfunction, compare their MRIs statistically, and construct three-plane maps showing the statistical probability of lesion. Using this method, we studied 180 patients with focal brainstem infarction. All subjects underwent a dedicated MRI study of the brainstem and the whole series of brainstem tests currently used in clinical neurophysiology: early (R1) and late (R2) blink reflex, early (SP1) and late (SP2) masseter inhibitory reflex, and the jaw jerk to chin tapping. Significance levels were highest for R1, SP1 and R2 afferent abnormalities. Patients with abnormalities in all three reflexes had lesions involving the primary sensory neurons in the ventral pons, before the afferents directed to the respective reflex circuits diverge. Patients with an isolated abnormality of R1 and SP1 responses had lesions that involved the ipsilateral dorsal pons, near the fourth ventricle floor, and lay close to each other. The area with the highest probabilities of lesion for the R2-afferent abnormality was in the ipsilateral dorsal-lateral medulla at the inferior olive level. SP2 abnormalities reached a low level of significance, in the same region as R2. Only few patients had a crossed-type abnormality of SP1, SP2 or R2; that of SP1 reached significance in the median pontine tegmentum rostral to the main trigeminal nucleus. Although abnormal in 38 patients, the jaw jerk appeared to have no cluster location. Because our voxel-based model quantitatively compares lesions in patients with or without a given reflex abnormality, it minimizes the risk that the significant areas depict vascular territories rather than common spots within the territory housing the reflex circuit. By analysing statistical data for a large cohort of patients, it also identifies the most frequent lesion location for each response. The finding of multireflex abnormalities reflects damage of the primary afferent neurons; hence it provides no evidence of an intra-axial lesion. The jaw jerk, perhaps the brainstem reflex most widely used in clinical neurophysiology, had no apparent topodiagnostic value, probably because it depends strongly on peripheral variables, including dental occlusion.
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Urban PP, Rolke R. Effects of botulinum toxin type A on vibration induced facilitation of motor evoked potentials in spasmodic torticollis. J Neurol Neurosurg Psychiatry 2004; 75:1541-6. [PMID: 15489383 PMCID: PMC1738799 DOI: 10.1136/jnnp.2003.029215] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND AND AIMS It has not been clarified if botulinum toxin (BTX) injection leads to muscle spindle dysfunction in man. This study aimed to test the hypothesis that BTX application reduces the facilitation of a magnetic evoked response (MEP). METHODS We used the vibration induced facilitation of an MEP of the sternocleidomastoid muscle (SCM) as a surrogate marker for muscle spindle function in 20 healthy subjects and 10 patients with idiopathic rotational torticollis in whom BTX was injected unilaterally. RESULTS The increase in the amplitude and area of the MEPs in the clinically not affected and untreated SCM of the patients did not differ significantly from the controls. At baseline, the vibration induced increase in the affected SCM of the patients was significantly lower than in the control group. Six weeks after BTX application, the observed facilitation decreased significantly (amplitude and area: p<0.001) when compared with baseline values. Twelve weeks after BTX application, facilitation showed an increase in the values of the amplitude (p<0.001), but not of the area when compared with the six week examination. CONCLUSIONS We demonstrated that the vibration induced MEP facilitation in the SCM of patients with torticollis significantly decreased six weeks after BTX application and again increased after 12 weeks in part when looking at MEP amplitude. This observation is suggestive of denervation and reinnervation of the muscle spindles after BTX injection.
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Urban PP, Pittermann P, Kirchhoff I, Wahlmann U. Trigemino-Hypoglossal Silent Period – A New Pontomedullary Brainstem Reflex. KLIN NEUROPHYSIOL 2004. [DOI: 10.1055/s-2004-832211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Fitzek S, Fitzek C, Axer H, Joachimski F, Marx JJ, Thömke F, Urban PP, Stöter P, Witte OW. Clinical course of isolated brain stem strokes. KLIN NEUROPHYSIOL 2004. [DOI: 10.1055/s-2004-831973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Urban PP, Zahn M, Schranz S, Rolke R, Glassl O, Pittermann P, Dieterich M. Breathing and Swallowing Pattern Abnormalities in Multiple Sclerosis. KLIN NEUROPHYSIOL 2004. [DOI: 10.1055/s-2004-832210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Thömke F, Iannetti GD, Cruccu G, Fitzek S, Marx JJ, Urban PP, Stöter P, Dieterich M, Hopf H. A Topodiagnostic Investigation on Lesions Causing Body Lateropulsion in the Absence of Clinical Signs of Vestibular Dysfunction. KLIN NEUROPHYSIOL 2004. [DOI: 10.1055/s-2004-832198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Urban PP, Bohl J, Abrao L, Stofft E. Absence of Muscle Spindles in Human Facial Muscles. KLIN NEUROPHYSIOL 2004. [DOI: 10.1055/s-2004-832209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Fischer B, Kalden P, Urban PP, Buhl R. [Paraneoplastic limbic encephalitis in small cell lung carcinoma]. Pneumologie 2004; 58:316-9. [PMID: 15162256 DOI: 10.1055/s-2004-818380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
We report about a 63-year-old male patient who complained of a recent onset of confusion. A mediastinal mass had been detected in his chest X-ray three days before admission to our clinic. Surprisingly, a CT scan of the brain revealed no signs of cerebral masses or oedema. MRI demonstrated bright hyperintens signals in the medial aspect of both temporal lobes. Biopsy by mediastinoscopy showed small cell lung carcinoma (SCLC). No distant metastases were found by staging procedures. Cerebrospinal fluid and serum contained antineuronal antibodies (anti-Hu). The combination of symptoms, MRI findings and paraneoplastic antibodies established the diagnosis of paraneoplastic limbic encephalitis in a patient with SCLC. Chemotherapy combined with immunosuppression by corticosteroids was started immediately. The primary tumour responded to therapy but improvement of cerebral symptoms was unsatisfactory. Severe memory loss and personality changes remained unchanged while there was a slight improvement in confusion and hallucinations.
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Marx JJ, Thoemke F, Mika-Gruettner A, Fitzek S, Vucurevic G, Urban PP, Stoeter P, Dieterich M, Hopf HC. Diffusionsgewichtetes MRT bei vertebrobasil�ren Isch�mien. DER NERVENARZT 2004; 75:341-6. [PMID: 15088089 DOI: 10.1007/s00115-003-1664-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The aim of this study was to evaluate the applicability, sensitivity, and predictive power of diffusion-weighted MR imaging (DWI) in the diagnosis of vertebrobasilar infarction. From 1997 to 2002, we prospectively recruited 268 patients with acute signs and symptoms suspective of vertebrobasilar ischemia. The patients underwent biplanar EPI-T2 and EPI DWI within 24 h after onset of symptoms and high-resolution MRI as a control within 7 days. One hundred twenty-one patients had additional CT scanning. The DWI revealed acute vertebrobasilar infarction in 71.0%. The mean time exposure of DWI was 8 min and thus no more than that of CT imaging. It showed significantly more acute lesions than CT imaging (28.0%), but additional high-resolution MRI was not able to reveal more lesions than DWI alone. Even in 42 patients with reversible brainstem or cerebellar symptoms classified as TIA or PRIND, DWI demonstrated acute ischemia in 42.8%. Sixty-three patients with optimal final diagnosis of vertebrobasilar ischemia had normal DWI. One week after onset of symptoms, 88.9% of these patients had recovered completely or showed minimal symptoms. Therefore, DWI is a sensitive indicator of acute vertebrobasilar ischemia. It is no more time-consuming than CT imaging, and normal DWI is a predictor of good clinical outcome in patients with brainstem or cerebellar infarction.
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Marx JJ, Iannetti GD, Mika-Gruettner A, Thoemke F, Fitzek S, Vucurevic G, Urban PP, Stoeter P, Cruccu G, Hopf HC. Topodiagnostic investigations on the sympathoexcitatory brain stem pathway using a new method of three dimensional brain stem mapping. J Neurol Neurosurg Psychiatry 2004; 75:250-5. [PMID: 14742599 PMCID: PMC1738876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
OBJECTIVES To study the incompletely understood sympathoexcitatory pathway through the human brain stem, using a new method of three dimensional brain stem mapping on the basis of digitally postprocessed magnetic resonance imaging (MRI). METHODS 258 consecutive patients presenting with acute signs of brain stem ischaemia underwent biplane T2 and EPI diffusion weighted MRI, with slice orientation parallel and perpendicular to a transversal slice selection of the stereotactic anatomical atlas of Schaltenbrand and Wahren, 1977. The individual slices were digitally normalised and projected onto the appropriate slices of the anatomical atlas. For correlation analysis lesions were imported into a three dimensional model of the human brain stem. RESULTS 31 of the 258 patients had Horner's syndrome caused by acute brain stem ischaemia. Only four of the patients with Horner's syndrome had pontine infarctions, 12 had pontomedullary lesions, and 15 had medullary lesions. Correlation analysis showed significantly affected voxels in the dorsolateral medulla but not in the pons. A statistical comparison with infarct topology in patients with medullary lesions but without Horner's syndrome indicated that involvement of the medial and ventral part of affected voxels located in the ventrolateral medullary tegmentum was specific for Horner's syndrome. CONCLUSIONS Based on this first in vivo topodiagnostic study, the central sympathoexcitatory pathway probably descends through the dorsal pons before converging on specific generators in the ventrolateral medullary tegmentum at a level below the IX and X nerve exits.
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Marx JJ, Iannetti GD, Thömke F, Fitzek S, Urban PP, Stoeter P, Cruccu G, Dieterich M, Hopf HC. MRT-basierte dreidimensionale Mappinganalysen zum Verlauf der Pyramidenbahn durch den menschlichen Hirnstamm. AKTUELLE NEUROLOGIE 2004. [DOI: 10.1055/s-2004-833038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Rolke R, Schalber C, Magerl W, Birklein F, Dieterich M, Treede RD, Urban PP. Hitzehyperalgesie bei Patienten mit idiopathischer peripherer Fazialisparese. AKTUELLE NEUROLOGIE 2004. [DOI: 10.1055/s-2004-833165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Urban PP, Solinski M, Best C, Rolke R, Hopf HC, Dieterich M. Different short-term modulation of cortical motor output to distal and proximal upper-limb muscles during painful sensory nerve stimulation. Muscle Nerve 2004; 29:663-9. [PMID: 15116369 DOI: 10.1002/mus.20011] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The pattern of upper-limb muscle activation following painful stimulation has not been clarified in detail. We investigated the short-term inhibitory and excitatory effects of painful electrical digital stimulation on the motoneuron pools of distal and proximal upper-limb muscles. Transcranial magnetic stimulation (TMS) was used as test stimulus, and painful digital nerve stimulation as conditioning stimulus for motor evoked potential (MEP) recordings over the abductor digiti minimi (ADM), abductor pollicis brevis (APB), biceps brachii (BB), and deltoid muscles. Inhibition of the conditioned MEP response was most prominent in the distal muscles, whereas BB and deltoid muscles were only weakly inhibited. The mean MEP response over APB decreased with painful cutaneous stimuli, showing maximum inhibition (by 82%) at interstimulus intervals (ISIs) of 50 ms. Inhibition in the ADM was maximal (49%) but less pronounced at an ISI of 40 ms. The BB and deltoid muscles showed inhibition by 25% and 29%, respectively. Significant facilitation was present in BB and deltoid muscles by 43% and 41% at an ISI of 100 ms, but not in the smaller hand muscles. The observed pattern of upper-limb muscle activation corresponds to the protective withdrawal reflex and the neuronal basis of the observed short-term modulation of motor activity is compatible with a spinal or brainstem pathway.
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Thümler BH, Urban PP, Davids E, Siessmeier M, Schreckenberger T, Benz P, Stoeter P, Bartenstein P, Hopf HC. Dysarthria and pathological laughter/crying as presenting symptoms of corticobasal-ganglionic degeneration syndrome. J Neurol 2003; 250:1107-8. [PMID: 14504974 DOI: 10.1007/s00415-003-0075-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2001] [Revised: 01/20/2003] [Accepted: 01/28/2003] [Indexed: 11/26/2022]
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Marx JJ, Iannetti GD, Thömke F, Fitzek S, Urban PP, Stoeter P, Cruccu G, Dieterich M, Hopf HC. Topodiagnostische Bedeutung der Hirnstammreflexe: Update unter Verwendung einer neuen Methode des dreidimensionalen Hirnstamm-Mappings. KLIN NEUROPHYSIOL 2003. [DOI: 10.1055/s-2003-816487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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