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Université de Fribourg

Task-dependent changes of corticospinal excitability during observation and motor imagery of balance tasks

Mouthon, Audrey ; Ruffieux, Jean ; Wälchli, Michael ; Keller, Martin ; Taube, Wolfgang

In: Neuroscience, 2015, vol. 303, p. 535–543

Non-physical balance training has demonstrated to be efficient to improve postural control in young people. However, little is known about the potential to increase corticospinal excitability by mental simulation in lower leg muscles. Mental simulation of isolated, voluntary contractions of limb muscles increase corticospinal excitability but more automated tasks like walking seem to have no or...

Université de Fribourg

Effect of surface stiffness on the neural control of stretch-shortening cycle movements

Márquez, G. ; Morenilla, L. ; Taube, Wolfgang ; Fernández-del-Olmo, M.

In: Acta Physiologica, 2014, vol. 212, no. 3, p. 214–225

Aim: It is accepted that leg stiffness (Kleg) increases when surface stiffness decreases, and vice versa. However, little is known how the central nervous system fulfils this task. To understand the effect of surface stiffness on the neural control of stretch-shortening cycle movements, this study aimed to compare modulation of spinal and corticospinal excitability at distinct phases after ground...

Université de Fribourg

Age-related decrease in motor cortical inhibition during standing under different sensory conditions

Papegaaij, Selma ; Taube, Wolfgang ; Hogenhout, Margot ; Baudry, Stéphane ; Hortobágyi, Tibor

In: Frontiers in Aging Neuroscience, 2014, vol. 6, p. 126

Background: Although recent studies point to the involvement of the primary motor cortex in postural control, it is unknown if age-related deterioration of postural control is associated with changes in motor cortical circuits. We examined the interaction between age and sensory condition in the excitability of intracortical motor pathways as indexed by short-interval intracortical inhibition...

Université de Fribourg

Aging causes a reorganization of cortical and spinal control of posture

Papegaaij, Selma ; Taube, Wolfgang ; Baudry, Stéphane ; Otten, Egbert ; Hortobágyi, Tibor

In: Frontiers in Aging Neuroscience, 2014, vol. 6, p. 28

Classical studies in animal preparations suggest a strong role for spinal control of posture. In humans it is now established that the cerebral cortex contributes to postural control of unperturbed and perturbed standing. The age-related degeneration and accompanying functional changes in the brain, reported so far mainly in conjunction with simple manual motor tasks, may also affect the...

Université de Fribourg

Repetitive activation of the corticospinal pathway by means of rTMS may reduce the efficiency of corticomotoneuronal synapses

Taube, Wolfgang ; Leukel, Christian ; Nielsen, Jens Bo ; Lundbye-Jensen, Jesper

In: Cerebral Cortex, 2014, p. -

Low-frequency rTMS applied to the primary motor cortex (M1) may produce depression of motor-evoked potentials (MEPs). This depression is commonly assumed to reflect changes in cortical circuits. However, little is known about rTMS-induced effects on subcortical circuits. Therefore, the present study aimed to clarify whether rTMS influences corticospinal transmission by altering the efficiency of...

Université de Fribourg

The effect of balance training on cervical sensorimotor function and neck pain

Beinert, Konstantin ; Taube, Wolfgang

In: Journal of Motor Behavior, 2013, vol. 45, no. 3, p. 271–278

The authors’ aim was to evaluate the effect of balance training on cervical joint position sense in people with subclinical neck pain. Thirty-four participants were randomly assigned to balance training or to stay active. Sensorimotor function was determined before and after 5 weeks of training by assessing the ability to reproduce the neutral head position and a predefined rotated head...

Université de Fribourg

Specific interpretation of augmented feedback changes motor performance and cortical processing

Lauber, Benedikt ; Keller, Martin ; Leukel, Christian ; Gollhofer, Albert ; Taube, Wolfgang

In: Experimental Brain Research, 2013, p. -

It is well established that the presence of external feedback, also termed augmented feedback, can be used to improve performance of a motor task. The present study aimed to elucidate whether differential interpretation of the external feedback signal influences the time to task failure of a sustained submaximal contraction and modulates motor cortical activity. In Experiment 1, subjects had to...

Université de Fribourg

Time to task failure and motor cortical activity depend on the type of feedback in visuomotor tasks

Lauber, Benedikt ; Leukel, Christian ; Gollhofer, Albert ; Taube, Wolfgang

In: PLoS ONE, 2012, vol. 7, no. 3, p. e32433

The present study aimed to elucidate whether the type of feedback influences the performance and the motor cortical activity when executing identical visuomotor tasks. For this purpose, time to task failure was measured during position- and force-controlled muscular contractions. Subjects received either visual feedback about the force produced by pressing a force transducer or about the actual...

Université de Fribourg

Pathway-specific plasticity in the human spinal cord

Leukel, Christian ; Taube, Wolfgang ; Beck, Sandra ; Schubert, Martin

In: European Journal of Neuroscience, 2012, p. -

The aim of the present study was to artificially induce plasticity in the human spinal cord and evaluate whether this plasticity is pathway specific. For this purpose, a technique called paired associative stimulation (PAS) was applied. Volleys evoked by transcranial magnetic stimulation over the primary motor cortex and peripheral nerve stimulation of the nervus tibialis in the popliteal fossa...

Université de Fribourg

Short-term pressure induced suppression of the short latency response - a new methodology for investigating stretch reflexes

Leukel, Christian ; Lundbye-Jensen, Jesper ; Gruber, Markus ; Zuur, Abraham T. ; Gollhofer, Albert ; Taube, Wolfgang

In: Journal of Applied Physiology, 2009///doi:10.1152/japplphysiol.00301.2009

During experiments involving ischemic nerve block we noticed that the short latency response (SLR) of evoked stretches in m. soleus decreased immediately following inflation of a pneumatic cuff surrounding the lower leg. The present study aimed to investigate this short-term effect of pressure application in more detail. 58 healthy subjects were divided into 7 protocols. Unilateral stretches were...