Neurophysiological and behavioral indices of time pressure effects on visuomotor task performance

Slobounov, Semyon; Fukada, Kei; Simon, Robert; Rearick, M.; Ray, William J.

doi:10.1016/s0926-6410(00)00009-4

Cited by 101 publications

(64 citation statements)

References 32 publications

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“…One possibility would be movement-monitoring potentials (MMPs) (Chiang et al 2004;Grunewald-Zuberbier and Grunewald 1978;Slobounov et al 1998Slobounov et al , 2000Slobounov et al , 2002, which are slow-moving negative potentials associated with preparation and execution of an action. The time course of this potential spans several seconds, with a rising negativity ϳ1,500 ms before movement onset, and a much larger ERP amplitude than the ERN that can persist for well over 1,000 ms (cf.…”

Section: Do the Waveforms Reflect Ern Activity?mentioning

confidence: 99%

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Changes in Performance Monitoring During Sensorimotor Adaptation

Anguera

Seidler²,

Gehring³

2009

Journal of Neurophysiology

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Error detection and correction are essential components of motor skill learning. These processes have been well characterized in cognitive psychology using electroencephalography (EEG) to record an eventrelated potential (ERP) called error-related negativity (ERN). However, it is unclear whether this ERP component is sensitive to the magnitude of the error made in a sensorimotor adaptation task. In the present study, we tested the function of error-related activity in a visuomotor adaptation task. To examine whether error size is reflected in the ERP, two groups of participants adapted manual aiming movements to either a small (30°) or large (45°) rotation of the visual feedback display. Each participant's trials were sorted into large and small error trials using a median split to examine potential error magnitude waveform differences. We also examined these trial types at the early and late stages of adaptation. There were no group differences for the behavioral or neural measures; however, waveforms from large error trials were significantly different from small error trials. The waveforms also changed as a function of practice as early adaptation waveforms were larger than late adaptation waveforms. The observed ERP component reflected differences in error magnitude with the amount of activity corresponding to the size of the error. Movement monitoring potentials likely affected the frequency and time course of the waveform so that it did not resemble the typical ERN; however, error-related activity was still distinguishable. The present findings are discussed in terms of current theories of the ERN as well as skill acquisition.

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Section: Do the Waveforms Reflect Ern Activity?mentioning

confidence: 99%

“…The time course of this potential spans several seconds, with a rising negativity ϳ1,500 ms before movement onset, and a much larger ERP amplitude than the ERN that can persist for well over 1,000 ms (cf. Chiang et al 2004;Slobounov et al 2000Slobounov et al , 2002.…”

Section: Do the Waveforms Reflect Ern Activity?mentioning

confidence: 99%

Changes in Performance Monitoring During Sensorimotor Adaptation

Anguera

Seidler²,

Gehring³

2009

Journal of Neurophysiology

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“…Giving people tasks in which the available time is perceived to be insufficient has been used as a relatively benign means of creating "high arousal" conditions (Steinsmeier-Pelster and Schürmann, 1993) and indeed has been associated with increased activation in frontal (and particularly right frontal) regions (Slobounov et al, 2000) implicated in other studies of alertness. The simple aim of this study was, therefore, to establish whether the belief that they were acting under time-pressure would be suffi-cient to significantly improve the spatial bias shown by patients with unilateral neglect.…”

Section: Introductionmentioning

confidence: 99%

A demonstration of endogenous modulation of unilateral spatial neglect: The impact of apparent time-pressure on spatial bias

George

Mercer

Walker

et al. 2007

J Int Neuropsychol Soc

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Unilateral neglect, a lack of awareness for one side of space, is a common and debilitating consequence of stroke. Previous work has identified a relationship between enduring left neglect and diminished general alertness and shown that increasing alertness can temporarily reduce the severity of the spatial bias. In that research, alertness was modulated by loud tones or with pharmacological stimulants. Here we examine whether cognitive, endogenously driven changes can produce similar short-term improvements. Time-pressure is associated with increased subjective arousal and increased activation in cortical regions associated with alertness. Here five patients completed a spatial cancellation task with and without instructions regarding a time limit. Significant reductions in neglect severity were observed when patients believed that they were acting under time-pressure, despite the conditions being equivalent in the actual (unlimited) time available. Functional imaging work has highlighted the secondary effects that damage to networks mediating alertness can have on structurally intact spatial systems. The results here suggest that activation of presumably spared function in these damaged networks can induce moment-by-moment changes in spatial function and, crucially, that this can be achieved using entirely endogenous means. (JINS, 2008, 14, 33-41.)

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“…Feedback control involves modification of ongoing movement using exteroceptive information, which includes tactile and visual stimulation. Electrocortical (EEG) studies have revealed that, with visual feedback, the magnitude of force and controlsignal gain can influence the activation across two regions, the parietal lobe and the supplimentary and mesial premotor area [6], whereas posterior parietal cortex plays a critical role in the nonvisual feedback loops [13] [14].…”

Section: Basic Concepts Of Feedback In Motor Experimentsmentioning

confidence: 99%

An MRI Compatible Visual Force-Feedback System for the Study of Force Control Mechanics

Hou

Shen

Sterr

2005

2005 IEEE Engineering in Medicine and Biology 27th Annual Conference

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Abstract-Motor task experiments play an essential role in exploring the brain mechanisms of movement control, and visual force-feedback is an important factor in these motor experiments. In this paper, the authors proposed a visual forcefeedback system suitable for neuroscience experiment. With this system, the force output produced by participants can be detected and recorded in real time, while force output was visually displayed as a feedback cue to the participants simultaneously. Furthermore, this force feedback system is MRI compatible, and can be used both in fMRI and ERP experiments. The proposed system has been applied in handgrip tasks and finger movement experiments, which were designed to explore the relationship between force output and brain activation mode in normal subject and stroke patient. The results demonstrated that various force levels were well detected and visual feedback signals enabled the accomplishment of experiments with both fixed and variable target force levels.

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Neurophysiological and behavioral indices of time pressure effects on visuomotor task performance

Cited by 101 publications

References 32 publications

Changes in Performance Monitoring During Sensorimotor Adaptation

Changes in Performance Monitoring During Sensorimotor Adaptation

A demonstration of endogenous modulation of unilateral spatial neglect: The impact of apparent time-pressure on spatial bias

An MRI Compatible Visual Force-Feedback System for the Study of Force Control Mechanics

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