Involvement of Subcortical Structures in the Preparation of Self-Paced Movement

Paradiso, Guillermo; Cunic, Danny; Chen, Robert

doi:10.1027/0269-8803.18.23.130

Cited by 6 publications

(8 citation statements)

References 70 publications

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“…27 The cerebellum (and basal ganglia) are assumed to contribute to the RP and CNV through thalamic relays. 28 Similar findings of decreased frontal preparatory electroencephalography have been reported to predict deficits in attention in normal volunteers. 29 The relationship between parietal and PFC anticipatory activity has been examined in a variety of ways.…”

Section: Anticipatory Neural Networksupporting

confidence: 67%

The Predictive Brain State: Timing Deficiency in Traumatic Brain Injury?

Ghajar

Ivry

2008

Neurorehabil Neural Repair

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Attention and memory deficits observed in traumatic brain injury (TBI) are postulated to result from the shearing of white matter connections between the prefrontal cortex, parietal lobe, and cerebellum that are critical in the generation, maintenance, and precise timing of anticipatory neural activity. These fiber tracts are part of a neural network that generates predictions of future states and events, processes that are required for optimal performance on attention and working memory tasks. The authors discuss the role of this anticipatory neural system for understanding the varied symptoms and potential rehabilitation interventions for TBI. Preparatory neural activity normally allows the efficient integration of sensory information with goal-based representations. It is postulated that an impairment in the generation of this activity in traumatic brain injury (TBI) leads to performance variability as the brain shifts from a predictive to reactive mode. This dysfunction may constitute a fundamental defect in TBI as well as other attention disorders, causing working memory deficits, distractibility, a loss of goal-oriented behavior, and decreased awareness.

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Section: Anticipatory Neural Networksupporting

confidence: 67%

The Predictive Brain State: Timing Deficiency in Traumatic Brain Injury?

Ghajar

Ivry

2008

Neurorehabil Neural Repair

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“…Movement preparation is a dynamic process involving cortical and sub-cortical areas of the brain (Kaufman, Churchland, Ryu, & Shenoy, 2014; Paradiso, Cunic, & Chen, 2004; Paradiso, Cunic, Saint-Cyr, et al, 2004). It is well established that the presentation of a LAS can interact with these preparatory processes, decreasing movement onset times and increasing response vigour (Marinovic & Tresilian, 2016; Valls-Solé, 2012).…”

Section: Discussionmentioning

confidence: 99%

Preparatory Suppression and Facilitation of Voluntary and Involuntary Responses to Loud Acoustic Stimuli in an Anticipatory Timing Task

Nguyen

Tresilian

Lipp

et al. 2020

Preprint

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AbstractIn this study, we sought to characterise the effects of intense sensory stimulation at different stages of preparation for an anticipated action on voluntary and involuntary behaviours. In our experiment, we presented unexpected loud acoustic stimuli (LAS) at four critical times during movement preparation to probe the state of the nervous system (Baseline, −1192 ms, −392 ms, and 0 ms relative to expected movement onset), and measured their effect on voluntary and involuntary motor actions (finger-press and eye-blink startle reflex, respectively).Voluntary responses were largely facilitated by the LAS, leading to earlier and more forceful responses compared to Control and Baseline conditions. Notably, voluntary responses were significantly facilitated on trials where the LAS was presented early during preparation (−1192 ms). Eye-blink reflexes elicited by the LAS at −392 ms were significantly reduced and delayed compared to other time-points, indicating suppression of sub-cortical excitability. Despite being in a suppressive state, voluntary responses on these trials were still facilitated by the LAS.The results provide insight into the mechanisms involved in preparing anticipatory actions. Induced activation can persist in the nervous system and can modulate subsequent actions for a longer time period than previously thought, highlighting that movement preparation is a continuously evolving process that is susceptible to external influence throughout the preparation period. Suppression of sub-cortical excitability shortly before movement onset is consistent with previous work showing corticospinal suppression which may be a necessary step before the execution of any voluntary response.

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“…Movement preparation is a dynamic process involving cortical and sub‐cortical areas of the brain (Kaufman et al., 2014; Paradiso et al., 2004; Paradiso, Cunic, Saint‐Cyr, et al., 2004). It is well established that the presentation of a LAS can interact with these preparatory processes, decreasing movement onset times and increasing response vigor (Marinovic & Tresilian, 2016; Valls‐Solé, 2012).…”

Section: Discussionmentioning

confidence: 99%

Preparatory suppression and facilitation of voluntary and involuntary responses to loud acoustic stimuli in an anticipatory timing task

et al. 2020

View full text Add to dashboard Cite

In this study, we sought to characterise the eects of intense sensory stimulation at dierent stages of preparation for an anticipated action on voluntary and involuntary behaviours. In our experiment, we presented unexpected loud acoustic stimuli (LAS) at four critical times during movement preparation to probe the state of the nervous system (Baseline, -1192 ms, -392 ms, and 0 ms relative to expected movement onset), and measured their eect on voluntary and involuntary motor actions (nger-press and eye-blink startle reex, respectively).Voluntary responses were largely facilitated by the LAS, leading to earlier and more forceful responses compared to Control and Baseline conditions. Notably, voluntary responses were signicantly facilitated on trials where the LAS was presented early during preparation (-1192 ms). Eye-blink reexes elicited by the LAS at -392 ms were signicantly reduced and delayed compared to other time-points, indicating suppression of sub-cortical excitability. Despite being in a suppressive state, voluntary responses on these trials were still facilitated by the LAS.The results provide insight into the mechanisms involved in preparing anticipatory actions. Induced activation can persist in the nervous system and can modulate subsequent actions for a longer time period than previously thought, highlighting that movement preparation is a continuously evolving process that is susceptible to external inuence throughout the preparation period. Suppression of sub-cortical excitability shortly before movement onset is consistent with previous work showing corticospinal suppression which may be a necessary step before the execution of any voluntary response.

show abstract

Involvement of Subcortical Structures in the Preparation of Self-Paced Movement

Cited by 6 publications

References 70 publications

The Predictive Brain State: Timing Deficiency in Traumatic Brain Injury?

The Predictive Brain State: Timing Deficiency in Traumatic Brain Injury?

Preparatory Suppression and Facilitation of Voluntary and Involuntary Responses to Loud Acoustic Stimuli in an Anticipatory Timing Task

Preparatory suppression and facilitation of voluntary and involuntary responses to loud acoustic stimuli in an anticipatory timing task

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