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    Université de Fribourg

    Alterations in the cortical control of standing posture during varying levels of postural threat and task difficulty

    Tokuno, Craig D. ; Keller, Martin ; Carpenter, Mark G. ; Márquez, Gonzalo ; Taube, Wolfgang

    In: Journal of Neurophysiology, 2018, vol. 120, no. 3, p. 1010–1016

    Cortical excitability increases during the performance of more difficult postural tasks. However, it is possible that changes in postural threat associated with more difficult tasks may in themselves lead to alterations in the neural strategies underlying postural control. Therefore, the purpose of this study was to examine whether changes in postural threat are responsible for the...

    Université de Fribourg

    Surround inhibition in the primary motor cortex is task-specifically modulated in non-professional musicians but not in healthy controls during real piano playing

    Márquez, Gonzalo ; Keller, Martin ; Lundbye-Jensen, Jesper ; Taube, Wolfgang

    In: Neuroscience, 2018, vol. 373, p. 106–112

    Research has indicated that at the onset of a finger movement, unwanted contractions of adjacent muscles are prevented by inhibiting the cortical areas representing these muscles. This so-called surround inhibition (SI) seems relevant for the performance of selective finger movements but may not be necessary for tasks involving functional coupling between different finger muscles. Therefore,...