Trends in Neurosciences
ReviewFusimotor discharge patterns during rhythmic movements
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Biases in rhythmic sensorimotor coordination: Effects of modality and intentionality
2013, Behavioural Brain ResearchCitation Excerpt :Since the observed activity of the sensory systems in the tracking task was neither necessary (viz., the hand was moved passively and the visual signal was in the visual field when gazing straight ahead) nor instructed, it seems likely that this activity served performance improvement. For proprioceptive tracking, the observed muscle activity may involve enhanced proprioception via muscle spindles [24] or the establishment of a bilateral frame of reference based on the thus generated efference copies [8,11]. Such a reference frame would allow for a prediction of the sensory consequences, thereby enhancing the error corrections required in the tracking task [8,11] (cf. [25]).
Frequency-induced changes in interlimb interactions: Increasing manifestations of closed-loop control
2011, Behavioural Brain ResearchCitation Excerpt :Muscle activation in the passive limb may enhance the error correction process, as active movements lead to differences in kinesthetic afference compared to passive movements. For instance, activation of the limb in KT may have enhanced accuracy of the afferent feedback from this arm via the muscle spindles [40]. In addition, Ridderikhoff et al. [33] suggested that the observed bilateral muscle activity resulted in enhanced stability because the resulting efference copies generated a bilateral reference for afference-based error correction.
Muscle proprioceptive feedback and spinal networks
2007, Brain Research BulletinCitation Excerpt :The actual discharge patterns of muscle spindle afferents during movements in humans and animals have turned out not to be quite as simple as required by the servo-asistance hypothesis, as briefly summarized now. Despite many physiological studies in animals and humans, the question of exactly how, during motor acts, γ-motoneurons are activated in relation to α-motoneurons has not yet been settled unequivocally [87,151,265,301]. This is due, in part, to the different movements investigated and different preparations and recording methods used.
Adaptive fusimotor reflex control in the decerebrate cat
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