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Bouts, Mark J.R.J. (author), Van Der Grond, Jeroen (author), Vernooij, Meike W. (author), Koini, Marisa (author), Schouten, T.M. (author), de Vos, Frank (author), Feis, Rogier A. (author), Lechner, Anita (author), Niessen, W.J. (author), More Authors (author)
Early and accurate mild cognitive impairment (MCI) detection within a heterogeneous, nonclinical population is needed to improve care for persons at risk of developing dementia. Magnetic resonance imaging (MRI)-based classification may aid early diagnosis of MCI, but has only been applied within clinical cohorts. We aimed to determine the...
journal article 2019
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Rahmati, Zahra (author), Schouten, A.C. (author), Behzadipour, Saeed (author), Taghizadeh, Ghorban (author), Firoozbakhsh, Keikhosrow (author)
Background: Impaired postural control in Parkinson's disease (PD) seriously compromises life quality. Although balance training improves mobility and postural stability, lack of quantitative studies on the neurophysiological mechanisms of balance training in PD impedes the development of patient-specific therapies. We evaluated the effects of...
journal article 2019
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Luft, Frauke (author), Sharifi, Sarvi (author), Mugge, W. (author), Schouten, A.C. (author), Bour, Lo J. (author), van Rootselaar, Anne Fleur (author), Veltink, Peter H. (author), Heida, Tijtske (author)
Background: The basal ganglia and cerebellum are brain structures involved in movement initiation, execution and termination. They are thought to be involved in the tremor generation and movement deficits in Parkinson's disease (PD) and essential tremor (ET). Especially in PD, maintaining cyclic movement, such as walking or tapping can be...
journal article 2019
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Solis Escalante, T. (author), van der Cruijsen, Joris (author), de Kam, Digna (author), van Kordelaar, J. (author), Weerdesteyn, V. (author), Schouten, A.C. (author)
The contributions of the cerebral cortex to human balance control are clearly demonstrated by the profound impact of cortical lesions on the ability to maintain standing balance. The cerebral cortex is thought to regulate subcortical postural centers to maintain upright balance and posture under varying environmental conditions and task...
journal article 2019
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Petit, L. (author), Boter, J.M. (author), Eenink, H.G.J. (author), Droulers, G. (author), Tagliaferri, M.L.V. (author), Li, R. (author), Franke, D.P. (author), Singh, K. J. (author), Clarke, J. S. (author), Schouten, R.N. (author), Dobrovitski, V.V. (author), Vandersypen, L.M.K. (author), Veldhorst, M. (author)
We investigate the magnetic field and temperature dependence of the single-electron spin lifetime in silicon quantum dots and find a lifetime of 2.8 ms at a temperature of 1.1 K. We develop a model based on spin-valley mixing and find that Johnson noise and two-phonon processes limit relaxation at low and high temperature, respectively. We...
journal article 2018
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Humphreys, P.C. (author), Kalb, N. (author), Morits, J.P.J. (author), Schouten, R.N. (author), Vermeulen, R.F.L. (author), Twitchen, Daniel J. (author), Markham, Matthew (author), Hanson, R. (author)
Large-scale quantum networks promise to enable secure communication, distributed quantum computing, enhanced sensing and fundamental tests of quantum mechanics through the distribution of entanglement across nodes <sup>1-7</sup>. Moving beyond current two-node networks <sup>8-13</sup> requires the rate of entanglement generation between nodes...
journal article 2018
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Wang, M. (author), Becker, T.M. (author), Schouten, Bob (author), Vlugt, T.J.H. (author), Infante Ferreira, C.A. (author)
To use high-temperature waste heat generated by diesel engines for onboard refrigeration of fishing vessels, an ammonia-based double-effect vapor absorption refrigeration cycle is proposed. Non-volatile ionic liquids are applied as absorbents in the double-effect absorption system. In comparison to systems using ammonia/water fluid, the...
journal article 2018
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Fu, X. (author), Rol, M.A. (author), Bultink, C.C. (author), van Someren, J. (author), Khammassi, N. (author), Ashraf, I. (author), Vermeulen, R.F.L. (author), de Sterke, J.C. (author), Vlothuizen, W.J. (author), Schouten, R.N. (author), García Almudever, C. (author), di Carlo, L. (author), Bertels, K.L.M. (author)
This article proposes a quantum microarchitecture, QuMA. Flexible programmability of a quantum processor is achieved by multilevel instructions decoding, abstracting analog control into digital control, and translating instruction execution with non-deterministic timing into event trigger with precise timing. QuMA is validated by several...
journal article 2018
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Filatova, O.G. (author), van Vliet, L.J. (author), Schouten, A.C. (author), Kwakkel, Gert (author), van der Helm, F.C.T. (author), Vos, F.M. (author)
Better insight into white matter (WM) alterations after stroke onset could help to understand the underlying recovery mechanisms and improve future interventions. MR diffusion imaging enables to assess such changes. Our goal was to investigate the relation of WM diffusion characteristics derived from diffusion models of increasing complexity...
journal article 2018
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Heerema, S.J. (author), Vicarelli, L. (author), Pud, S. (author), Schouten, R.N. (author), Zandbergen, H.W. (author), Dekker, C. (author)
Many theoretical studies predict that DNA sequencing should be feasible by monitoring the transverse current through a graphene nanoribbon while a DNA molecule translocates through a nanopore in that ribbon. Such a readout would benefit from the special transport properties of graphene, provide ultimate spatial resolution because of the single...
journal article 2018
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van Kordelaar, J. (author), Pasma, J.H. (author), Cenciarini, Massimo (author), Schouten, A.C. (author), van der Kooij, H. (author), Maurer, Christoph (author)
The vestibular system is involved in gaze stabilization and standing balance control. However, it is unclear whether vestibular dysfunction affects both processes to a similar extent. Therefore, the objective of this study was to determine how the reliance on vestibular information during standing balance control is related to gaze...
journal article 2018
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Pasma, J.H. (author), Assländer, Lorenz (author), van Kordelaar, J. (author), de Kam, Digna (author), Mergner, Thomas (author), Schouten, A.C. (author)
The Independent Channel (IC) model is a commonly used linear balance control model in the frequency domain to analyze human balance control using system identification and parameter estimation. The IC model is a rudimentary and noise-free description of balance behavior in the frequency domain, where a stable model representation is not...
journal article 2018
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Kalogianni, K. (author), Daffertshofer, Andreas (author), van der Helm, F.C.T. (author), Schouten, A.C. (author), de Munck, Jan C. (author)
In searching for clinical biomarkers of the somatosensory function, we studied reproducibility of somatosensory potentials (SEP) evoked by finger stimulation in healthy subjects. SEPs induced by electrical stimulation and especially after median nerve stimulation is a method widely used in the literature. It is unclear, however, if the EEG...
journal article 2018
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Vlaar, M.P. (author), Birpoutsoukis, Georgios (author), Lataire, John (author), Schouten, A.C. (author), Schoukens, Johan (author), van der Helm, F.C.T. (author)
Joint manipulation elicits a response from the sensors in the periphery which, via the spinal cord, arrives in the cortex. The average evoked cortical response recorded using electroencephalography was shown to be highly nonlinear; a linear model can only explain 10% of the variance of the evoked response, and over 80% of the response is...
journal article 2018
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van de Ruit, M.L. (author), Cavallo, Gaia (author), Lataire, John (author), van der Helm, F.C.T. (author), Mugge, W. (author), van Wingerden, J.W. (author), Schouten, A.C. (author)
During movements, humans continuously regulate their joint impedance to minimize control effort and optimize performance. Joint impedance describes the relationship between a joint's position and torque acting around the joint. Joint impedance varies with joint angle and muscle activation and differs from trial-to-trial due to inherent...
journal article 2018
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Rol, M.A. (author), Bultink, C.C. (author), O'Brien, T.E. (author), De Jong, S. R. (author), Theis, L. S. (author), Fu, X. (author), Lüthi, F. (author), Vermeulen, R.F.L. (author), de Sterke, J.C. (author), Bruno, A. (author), Deurloo, D. (author), Schouten, R.N. (author), Wilhelm, FK (author), DiCarlo, L. (author)
We present a tuneup protocol for qubit gates with tenfold speedup over traditional methods reliant on qubit initialization by energy relaxation. This speedup is achieved by constructing a cost function for Nelder-Mead optimization from real-time correlation of nondemolition measurements interleaving gate operations without pause. Applying the...
journal article 2017
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Vlaar, M.P. (author), Solis Escalante, T. (author), Dewald, J.P.A. (author), Van Wegen, Erwin E H (author), Schouten, A.C. (author), Kwakkel, G. (author), van der Helm, F.C.T. (author)
Background: Cortical damage after stroke can drastically impair sensory and motor function of the upper limb, affecting the execution of activities of daily living and quality of life. Motor impairment after stroke has been thoroughly studied, however sensory impairment and its relation to movement control has received less attention. Integrity...
journal article 2017
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Yang, Y. (author), Guliyev, Bekir (author), Schouten, A.C. (author)
Mechanical perturbations applied to the wrist joint typically evoke a stereotypical sequence of cortical and muscle responses. The early cortical responses (&lt;100 ms) are thought be involved in the “rapid” transcortical reaction to the perturbation while the late cortical responses (&gt;100 ms) are related to the “slow” transcortical reaction....
journal article 2017
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Forbes, P.A. (author), de Bruijn, E. (author), Nijmeijer, SWR (author), Koelman, JHTM (author), van der Helm, F.C.T. (author), Schouten, A.C. (author), Tijssen, MAJ (author), Happee, R. (author)
Background Effective sensorimotor integration is essential to modulate (adapt) neck stabilization strategies in response to varying tasks and disturbances. This study evaluates the hypothesis that relative to healthy controls cervical dystonia patients have an impaired ability to modulate afferent feedback for neck stabilization with changes...
journal article 2017
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Vlaar, M.P. (author), Solis Escalante, T. (author), Vardy, A.N. (author), van der Helm, F.C.T. (author), Schouten, A.C. (author)
Cortical responses to continuous stimuli as recorded using either magneto- or electroencephalography (EEG) have shown power at harmonics of the stimulated<br/>frequency, indicating nonlinear behavior. Even though the selection of analysis techniques depends on the linearity of the system under study, the importance of nonlinear contributions to...
journal article 2017
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