Regular ArticleTheory of the Relation between Human Brain Activity (MEG) and Hand Movements
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2020, Neuroscience and Biobehavioral ReviewsCitation Excerpt :Neural crosstalk can influence movement characteristics, as illustrated by spontaneous switches in coordination patterns (Aramaki et al., 2005; Houweling et al., 2010). This neural crosstalk can also be identified in unimanual movements (Daffertshofer et al., 2000; Fuchs et al., 2000a, b) and therefore it is conceivable that behavioral and neural determinants of bimanual coordination may also apply to unimanual movements (Daffertshofer et al., 2005; Gross et al., 2005; Vercauteren et al., 2008). With the present review, we seek to substantiate this idea by specifying these determinants and the functional role of the often-reported, bilateral activation patterns in the cortex during unilateral hand movements in healthy humans.
Symmetry Breaking in Space-Time Hierarchies Shapes Brain Dynamics and Behavior
2017, NeuronCitation Excerpt :In other words, control is geared not toward the execution of a single trajectory, but rather toward instantiation of a dynamics that favors goal achievement via flow and trajectory formation, its stability and robustness, as well as redundancy and compensation. This claim is supported by a large literature on the representation of behavioral variables in brain signals (Freeman, 1988; Friston, 1997; Fuchs et al., 2000; Horwitz et al., 1999; Jerbi et al., 2007; Jirsa et al., 1998; Kelso et al., 1998; Makeig et al., 2002; Meyer-Lindenberg et al., 2002). For instance, Kelso et al. (1998) showed that MEG patterns significantly mirror the movement velocity across a broad range of initial conditions, peak velocities, and movement rates, which is consistent with single-cell studies in monkeys suggesting that speed (in addition to direction) is represented in the discharge rate of motor cortical cells (Moran and Schwartz, 1999).
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