ArticleFrontiers in systems neuroscience2019
Fluctuations in Human Corticospinal Activity Prior to Grasp.
Article in Frontiers in systems neuroscience, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Sensory basis of speech motor learning and memory.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Trial-By-Trial Variation In Upper Extremity Movement Smoothness After Acute Stroke Relates To Clinical Assessments And Corticospinal Tract Injury.Neurorehabilitation and neural repair · 2025Article
- Anticipatory control of digit kinematics: a developmental milestone for motor skill acquisition.Experimental brain research · 2025Article
- Probing sensorimotor memory through the human speech-audiomotor system.Journal of neurophysiology · 2025Article
- Entropy in Electroencephalographic Signals Modulates with Force Magnitude During Grasping - A Preliminary Report.Journal of motor behavior · 2024Article
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Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Neuronal firing rate variability prior to movement onset contributes to trial-to-trial variability in primate behavior. However, in humans, whether similar mechanisms contribute to trial-to-trial behavioral variability remains unknown. We investigated the time-course of trial-to-trial variability in corticospinal excitability (CSE) using transcranial magnetic stimulation (TMS) during a self-paced reach-to-grasp task. We hypothesized that CSE variability will be modulated prior to the initiation of reach and that such a modulation would explain trial-to-trial behavioral variability. Able-bodied individuals were visually cued to plan their grip force before exertion of either 30% or 5% of their maximum pinch force capacity on an object. TMS was delivered at six time points (0.5, 0.75, 1, 1.1, 1.2, and 1.3 s) following a visual cue that instructed the force level. We first modeled the relation between CSE magnitude and its variability at rest (
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