Nikolaus Peter Schumann- PhD, MD
- Universitätsklinikum Jena
Nikolaus Peter Schumann
- PhD, MD
- Universitätsklinikum Jena
About
87
Publications
8,419
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
728
Citations
Introduction
Skills and Expertise
Current institution
Publications
Publications (87)
Complex facial muscle movements are essential for many motoric and emotional functions. Facial muscles are unique in the musculoskeletal system as they are interwoven, so that the contraction of one muscle influences the contractility characteristic of other mimic muscles. The facial muscles act more as a whole than as single facial muscle movement...
Physische Arbeit beansprucht die Muskeln und führt zu einer Ermüdung der Muskulatur und damit einhergehend zum Nachlassen der Kraft. Bei andauernder körperlicher Tätigkeit kann es dadurch zu einer Überbeanspruchung und langfristig zu Schäden im Muskel-Skelett-System kommen. Um diesen Erkrankungen bei körperlicher Arbeit im Beruf, wie beispielsweise...
Im Zuge des demographischen Wandels und mit dem Ziel der körperlichen Entlastung
von Arbeitnehmern in den unterschiedlichen Tätigkeitsfeldern spielen die sogenannten Exoskelett-Systeme eine immer größere Rolle. Die Unterstützung bei körperlich besonders belastenden Aufgaben, wie der Überkopfarbeit, steht dabei in den letzten Jahren im Fokus. Aufgru...
One of the most common causes for larynx paralysis is the injury of the recurrent laryngeal nerve which, among others, causes the paralysis of the posterior cricoarytenoideus muscle (PCA). Electrical stimulation of PCA offers an approach to retaining the function of the paralyzed larynx muscle. The study aim was to test the applicability of an intr...
The study aim was to identify and analyze intramuscular electrically sensitive points. Electrically sensitive points are herein defined as positions, which allow muscles stimulation with a minimum possible fatigue for a maximum amount of time. A multichannel array electrode was used which could be interesting to retain the function of larynx muscle...
Electrical stimulation of posterior cricoarytenoid muscle offers a physiological approach to retain the function of the paralyzed larynx muscle after paralysis. The aim of this study was to develop and evaluate a durable, biocompatible, and atraumatic array electrode for inclusion in a larynx pacemaker. In addition to developing the electrode array...
Mittels 48-Kanal-Oberflächen-Elektromyographie (EMG) wurde die mimische Muskulatur von 30 gesunden männlichen Probanden während definierter Gesichtsbewegungen untersucht. Für jede Testbewegung wurden die EMG-Aktivitäten (Wurzel aus der spektralen EMG-Gesamtleistung) in einem EMG-Aktivitätsprofil (Boxplot) zusammengestellt. Die daraus abzuleitenden...
Using 48-channel surface electromyography (sEMG) the facial muscles of 30 healthy male volunteers were examined while performing defined facial movements. EMG activities (square root of the spectral EMG total power) were illustrated by EMG activity profiles (boxplots). The inter- and intramuscular coordination patterns deduced from these EMG profil...
Publication ref.: FENS Abstr., vol.5, 053.2, 2010
In order to accurately characterize essential muscle activity during facial movements a new surface EMG (SEMG) technique was introduced and applied. Results represent reference data of healthy persons for future diagnostic purposes. In 30 healthy males monopolar electromyograms of the facial muscles were simultaneously recorded from 48 bilateral-sy...
Increasing interest in rodent models for movement disorders has led to an increasing need for more accurate and precise methods for both delineating the nature of abnormal movements and measuring their severity. These studies describe application of simultaneous high-speed video kinematics with multichannel electromyography (EMG) to characterize th...
The qualities of a particular car that are experienced by the driver in direct interaction with the car have come to be significant distinguishing features. The brake system is particularly important in this respect because it belongs to the essence of driving and of keeping the vehicle under control. An overview is given in this paper of methodolo...
The control elements in motor vehicles must be designed as far as possible to
save the operator from physiological strain and fatigue while the car is being driven. If these
criteria are not fulfilled, or if pain is even felt by the driver while driving, the vehicle in question
is felt to be uncomfortable. The risk of muscle strain arises primarily...
Mouse models are increasingly used in current research on motor disorders. In mice, the myoelectrical activation of thigh muscles during locomotion has not yet, however, been investigated in depth. Especially intramuscular coordination has hardly been clarified. Therefore, the aims of this study were to characterize myoelectrical activity in the va...
Surface EMG (SEMG) as non-invasive method is a valuable tool in functional studies of movement co-ordination. The interpolation of the SEMG power (EMG mapping) gives information about intra- and inter-muscular co-ordination. It has been shown that SEMG maps of low back pain patients and healthy subjects differ. The only major drawback to SEMG is th...
In mice a new method for 2x4-channel surface electromyography (EMG) recordings of the vastus lateralis and biceps femoris muscles during locomotion on a treadmill with varying speed is presented. The approach involves high-speed-videography (sampling interval 2.5 ms) in concert with the application of chronically implanted surface EMG multi-electro...
An increased spatial resolution in multichannel surface EMG recordings would provide new possibilities for the investigation of intermuscular and intramuscular coordination. A known analytical solution for volume conduction allows the conclusion that a high pass filtered surface electromyography (SEMG) signal contains information from a smaller env...
The study aims at a precise characterisation of intramuscularly varying recruitment patterns within the triceps brachii muscle (long and lateral head; proximal, medial, distal regions) in the time course of averaged step cycles during locomotion.
The triceps brachii muscle of 15 Hannover rats was investigated with a supramuscular 16-electrodes grid...
Multichannel surface EMG recordings of a multiheaded skeletal muscle during cyclic locomotion combined with cineradiography were analysed in a chronic experiment. The resulting detailed two-dimensional activation pattern from the long and lateral triceps brachii heads of the rat during treadmill locomotion were combined with gait characteristics an...
Multichannel surface EMG recordings of a multiheaded skeletal muscle during cyclic locomotion combined with cineradiography
were analysed in a chronic experiment. The resulting detailed two-dimensional activation pattern from the long and lateral
triceps brachii heads of the rat during treadmill locomotion were combined with gait characteristics an...
A new method for multichannel surface-EMG measurements in small animals is presented. The underlying scientific aim is the characterisation of the spreading and the co-ordination of skeletal muscle activation between different muscles or muscle parts, depending on various motor tasks. The myoelectrical signals were recorded monopolarly by a 16-chan...
To investigate the factors affecting the topography of trapezius muscle EMG, multichannel recordings were made at different forces of isometric shoulder elevation and during fatiguing exercise.
Twenty-eight channels of monopolar EMG were recorded from an array of 4 x 7 electrodes placed on the upper trapezius muscle. From the monopolar EMG and the...
A study was carried out to investigate temporal changes of activation of shoulder and back muscles in workers at visual display units by means of surface EMG. Moreover, postural parameters were recorded to distinguish fatigue-related from posture-related changes of the myoelectrical activity.
Nine healthy female office workers typed texts spoken fr...
Die Harnstreßinkontinenz nach radikaler Prostatektomie kann durch konsequente Physiotherapie in einem hohen Prozentsatz geheilt werden. Die Beurteilung von funktionellen und koordinativen Veränderungen der Beckenbodenmuskulatur sind mit der Oberflächenpolygraphie vorteilhaft möglich.
Es wurde eine vierkanalige Oberflächen-EMG-Untersuchungstechnik z...
Urinary stress incontinence after radical prostatectomy could be cured by physiotherapy in a high percentage. The authors developed an investigation procedure for description of myoelectrical activity of pelvic floor with surface electrodes. 10 patients were studied 1 day before, 10 days and 6 months after radical prostatectomy. Significant changes...
Urinary stress incontinence after radical prostatectomy could be cured by physiotherapy in a high percentage. We developed an investigation procedure for description of myoelectrical activity of pelvic floor with 8 surface electrodes (4-channel, bipolar montage). Ten patients were studied one day before, ten days and six months after radical prosta...
We developed an investigation procedure for description of myoelectrical activity of pelvic floor with surface electrodes. Ten patients were studied one day before, ten day and six months after radical prostatectomy. Significant changes of amplitude and frequency characteristics could not be found in rest and during the stationary intervals of maxi...
The complex and non-stationary character of multichannel biological signals like the EMG and the EEG requires dynamic methods for multidimensional processes in the spectral domain. The paper presents an adaptive algorithm of fitting bivariate time-dependent ARMA models. On this basis it is possible to calculate both univariate and bivariate spectra...
Für die automatische Analyse des Oberflächen-EMG wird erstmalig eine Mustererkennungseinheit vorgeschlagen und getestet, die eine automatische Klassifikation mit vorgegebener Klasseneinteilung (überwachtes Lernen) realisiert und bei der die Filtereigen-schaften der Vorverarbeitung automatisch während des Lernprozesses des Klassifikators optimiert w...
In 20 healthy subjects, 16-channel surface electromyograms (EMG) were recorded with the mandible in its postural position, during compensation for forces applied from ipsilateral, contralateral and frontal positions, and during force-constant biting on a unilaterally placed force transducer. After artefact elimination, EMG power spectra were calcul...
Für die automatische Klassifikation definierter myoelektrischer Aktivitätsmuster wurde eine Methode entwickelt, die auf der topographischen Mehrkanalregistrierung des Oberflächen-EMG basiert. Die verwendete methodische Strategie besteht aus der Kombination des dynamischen EMG-Spektralmappings, realisiert über die Hubert-Transformation, mit der auto...
In controls and patients with different syndromes (spastic/flaccid paresis, low back pain syndrome), the myoelectrical activation patterns of complex muscles (M. biceps brachii, M. quadriceps femoris, M. masseter) or synergistic/antagonistic muscle groups in the back region during isometric muscle contractions and defined movements were determined...
Electromyographic and mechanographic investigations in patients with muscular hypotonia, which is, for instance, a side-effect after stereotactic treatment of tremor syndromes, permit the presumption that in this sensomotor open-loop situation the decreased muscular resistance to stretching during isometric contraction (initial stiffness) is caused...
Elektromyographische und mechanographische Untersuchungen bei Patienten mit muskulärer Hypotonie zentralen Ursprungs, die als Nebeneffekt nach stereotaktischer Tremorbehandlung auftritt, ließen vermuten, daß die Verminderung des Dehnungswiderstandes während isometrischer Kontraktion unter einer Open-loop-Situation (initial stiffness) auf einer Verä...
A new method for quantitative characterization of myoelectrical masseter activity distribution by mapping of spectral EMG-parameters is described. The surface electromyograms of M. masseter were monopolarly recorded (16 channels). On the basis of registered EMG intervals (512 ms) the spectral EMG power of several frequency bands was calculated (Fas...
In 20 healthy volunteers 16-channel surface electromyograms were monopolarly recorded from the right and left masseter muscle during defined functional conditions (force-constant bite, right and left hand side, 196, 333, 530 N chewing force, during a compensation of a load directed from a frontal or a lateral position to the mandible (20, 49, 69 N)...
Eine neue Methode zur quantitativen Kennzeichnung myoelektrischer Aktivitätsverteilungen des M. masseter mittels Mapping spektraler EMG-Parameter wird vorgestellt. Die Registrierung des Masseter-Oberflächenelek-tromyogramms erfolgte simultan über 16 Kanäle mit monopolarer Ableittechnik. Auf der Basis der aufgezeichneten 512 ms EMG-Abschnitte wurde...
Bei 20 gesunden Personen wurden monopolar vom rechten und linken M. masseter 16 Kanal-Oberflächen-elektromyogramme unter definierten Funktionszuständen aufgezeichnet (beim rechts- und linksseitigen kraftkonstanten Zubeißen mit 196, 333, 530N Kaukraft, während der Kompensation frontaler und lateraler Schubbelastungen auf den Unterkiefer mit 20, 49,...
Statistische Parameter zB. die mittlere spektrale Leistung in einem Frequenzband, die für bestimmte Signalmuster charakteristisch sind, werden für das Training künstlicher neuronaler Netzwerke (ANN - artificial neural networks) angewendet. Für die Klassifikation der Signalmuster mittels trainierter ANN werden äquivalente dynamische spektrale Parame...
Ausgangspunkt unserer Untersuchungen ist die Hypothese, daß die Frakturhäufigkeit bei der Osteoporose nicht allein durch die Osteopenie erklärt werden kann, sondern diese auch auf Veränderungen in neuromuskulären Erregungsvorgängen zurückzuführen ist.
On the basis of Discrete Hilbert Transformation spectral parameters for dynamic EMG analysis can be introduced. Within analysis intervals which are used in the same manner as in spectral analysis, the momentary power of EMG frequency bands can be computed as time series of the same interval duration. A close connection exists between momentary powe...
Auf der Basis der diskreten Hilbert-Transformation können Spektralparameter für die dynamische EMG-Analyse berechnet werden. Dabei wird innerhalb eines Analyseintervalls, welches auch für die Leistungsspektralanalyse genutzt wird, die Momentanleistung von EMG-Frequenzbändern über die Gesamtdauer des Intervalls berechnet. Es existiert ein vollständi...
The surface-EMG becomes more and more important because computer assisted analysing systems can be applied. The occurrence of artefacts makes it very difficult to compare several recorded EMG channels with each other. In this study a frequency related quantification of movement artefacts and ECG-related influences on the EMG is carried out to selec...
Das Oberflächen-EMG gewinnt durch die Anwendung rechnergestützter Analysesysteme zunehmend an Bedeutung. Der Vergleich zwischen verschiedenen Meßkanälen wird durch das Auftreten von Artefakten erschwert. In der vorliegenden Studie erfolgt die frequenzbezogene Quantifizierung von Bewegungsartefakten und EKG-bedingten EMG-Veränderungen zur Auswahl ei...
In the present study different heart rate patterns were demonstrated to accompany flight-fight behaviour, orienting behaviour and passive avoidance in rabbits. Flight-fight behaviour was characterized by markedly increased heart rate and diminished overall heart rate variability. The effect was mediated by vagal inhibition and beta-adrenergic activ...
Heart rate fluctuations (HRF) were investigated in 18 adult female rabbits (Weisses Grosssilber) in chronical experiments at rest, during motor activity, passive and active avoidance. Pharmacological blockades of the neurovegetative transmission were used to determine the characteristics of neurovegetative mediation during the behavioural states ex...
Patients suffering from temporomandibular joint dysfunction syndrome (TMJS) and healthy volunteers were examined by means of MMPI questionnaire and electromyography (masseter, anterior temporal and anterior digastric muscles) at rest and during natural chewing. In response to mental load (arithmetic chain task) TMJS patients showed an increase in p...
In 25 chronic adult rabbits, the functional organization of neurally mediated short-term rhythms and patterns of the heart rate (HR) were investigated. The respiration-unrelated arrhythmia seems to be vagally mediated only, being abolished with atropine. The respiration-related arrhythmia exists not only within the range of respiratory frequency bu...
New possibilities of non-invasive systems analysis of the short-term control of arterial pressure basing on closed loop testing by parameter estimation (generalized recursive regression) including a filter element to take into consideration the correlated error (feed-back effect) are described. The experimental expense was minimized by active plann...
