scholarly journals Comparing Human and AI Attention in Visuomotor Tasks

2021 ◽  
Vol 21 (9) ◽  
pp. 2056
Author(s):  
Ruohan Zhang ◽  
Sihang Guo ◽  
Bo Liu ◽  
Yifeng Zhu ◽  
Dana Ballard ◽  
...  
Keyword(s):  
Visuomotor Tasks

scholarly journals Comparing three portable, tablet-based visuomotor tasks to laboratory versions: An assessment of test validity

2018 ◽  
Vol 2 ◽  
pp. 205970021879914 ◽  
Author(s):  
Christopher D Bedore ◽  
Jasmine Livermore ◽  
Hugo Lehmann ◽  
Liana E Brown
Keyword(s):  
Test Validity ◽  
Neurological Status ◽  
Stop Signal ◽  
Stop Signal Task ◽  
Response Patterns ◽  
Double Step ◽  
Movement Timing ◽  
Visuomotor Processing ◽  
Visuomotor Tasks ◽  
Portable Tablet

The assessment of visuomotor function can provide important information about neurological status. Many tasks exist for testing visuomotor function in the laboratory, but the availability of portable, easy-to-use versions that allow reliable, accurate, and precise measurement of movement timing and accuracy has been limited. We developed a tablet application that uses three laboratory visuomotor tests: the double-step task, interception task, and stop-signal task. We asked the participants to perform both the lab and tablet versions of each task and compared their response patterns across equipment types to assess the validity of the tablet versions. On the double-step task, the participants adjusted to the displaced target adequately in both the lab and tablet versions. On the interception task, the participants intercepted nonaccelerating targets and performed worse on accelerating targets in both versions of the task. On the stop-signal task, the participants successfully inhibited their reaching movements on short stop-signal delays (50–150 ms) more frequently than on long stop-signal delays (200 ms) in both versions of the task. Our findings suggest that the tablet version of each task assesses visuomotor processing in the same way as their respective laboratory version, thus providing the research community with a new tool to assess visuomotor function.

scholarly journals Cross-transfer of motor control in visuomotor tasks. Systematic review

2021 ◽  
Vol 38 (5) ◽  
pp. 358-366
Author(s):  
Javier Ruiz-Seijoso ◽  
Yaiza Taboada-Iglesias
Keyword(s):  
Motor Control ◽  
Randomized Trials ◽  
Web Of Science ◽  
Control Group ◽  
Motor Ability ◽  
Short Term ◽  
Exclusion Criteria ◽  
Cross Education ◽  
Visuomotor Tasks ◽  
Visuomotor Skills

Introduction: The term “cross-education” describes the perfomance improvement, both in motor control and strength, of a limb after training the opposite. Despite its current interest, there is no consensus on many concepts of the transfer of a visuomotor skill. The aim of the present research was to review the current literature on the phenomenon of cross-education in visuomotor skills in order to determine the magnitude of transference and its relationships with the context of the intervention. Results: A literature search was conducted during December 2019 in the databases Pubmed, CINAHL, MEDLINE, Web of Science, SPORTdiscus and Scopus. The descriptors “Motor ability” and “Motor skill” were used, in addition to the keywords “Motor control”, “skill”, “Task”, “cross over effect”, “cross exercise”, “contralateral learning”, “inter limb transfer “,” cross transfer “,” cross education “. After applying the inclusion and exclusion criteria, a total of 19 articles were obtained for analysis. Of these articles, 12 are RCTs, 4 crossover clinical trial, 2 are non-randomized trials and only 1 lacks a control group. Most of the articles consist of a short-term intervention. Only 5 studies are of a duration of between 4 and 6 weeks. Conclusion: the cross-education phenomenon occurs in visuomotor skills. However, the magnitude of transference and its relation to the amount of learning of the trained member seems to be very variable depending on the context of the intervention. Likewise, the scarce consensus and the methodological differences in the studies make it difficult to draw firm conclusions about the effects of the context on the transference.

scholarly journals A unifying principle underlying the extracellular field potential spectral responses in the human cortex

2015 ◽  
Vol 114 (1) ◽  
pp. 505-519 ◽  
Author(s):  
Ella Podvalny ◽  
Niv Noy ◽  
Michal Harel ◽  
Stephan Bickel ◽  
Gal Chechik ◽  
...  
Keyword(s):  
Field Potential ◽  
Neuronal Activation ◽  
Human Cortex ◽  
Neuronal Process ◽  
High Gamma ◽  
Neuronal Processes ◽  
Limited Power ◽  
Visuomotor Tasks ◽  
Band Limited ◽  
Spectrum Slope

Electrophysiological mass potentials show complex spectral changes upon neuronal activation. However, it is unknown to what extent these complex band-limited changes are interrelated or, alternatively, reflect separate neuronal processes. To address this question, intracranial electrocorticograms (ECoG) responses were recorded in patients engaged in visuomotor tasks. We found that in the 10- to 100-Hz frequency range there was a significant reduction in the exponent χ of the 1/ fχ component of the spectrum associated with neuronal activation. In a minority of electrodes showing particularly high activations the exponent reduction was associated with specific band-limited power modulations: emergence of a high gamma (80–100 Hz) and a decrease in the alpha (9–12 Hz) peaks. Importantly, the peaks' height was correlated with the 1/ fχ exponent on activation. Control simulation ruled out the possibility that the change in 1/ fχ exponent was a consequence of the analysis procedure. These results reveal a new global, cross-frequency (10–100 Hz) neuronal process reflected in a significant reduction of the power spectrum slope of the ECoG signal.

Macaque Frontal Eye Field Input to Saccade-Related Neurons in the Superior Colliculus

2003 ◽  
Vol 90 (2) ◽  
pp. 1046-1062 ◽  
Author(s):  
Janet O. Helminski ◽  
Mark A. Segraves
Keyword(s):  
Superior Colliculus ◽  
Rhesus Monkeys ◽  
Frontal Eye Field ◽  
Specific Class ◽  
Related Activity ◽  
Deep Layers ◽  
Eye Field ◽  
Visuomotor Tasks ◽  
Superior Colliculus Neurons ◽  
Made In

Extracellular recordings were made simultaneously in the frontal eye field and superior colliculus in awake, behaving rhesus monkeys. Frontal eye field microstimulation was used to orthodromically activate the superior colliculus both to locate the depth of the strongest frontal eye field input to the superior colliculus and to identify superior colliculus neurons receiving direct frontal eye field input. The activity of orthodromically driven colliculus neurons was characterized during visuomotor tasks. The purpose of this study was to identify the types of superior colliculus neurons that receive excitatory frontal eye field input. We found that microstimulation of the frontal eye field did not activate the superficial layers of the superior colliculus but did activate the deeper layers. This pattern of activation coincided with the prevalence of visual versus saccade-related activity in the superficial and deep layers. A total of 83 orthodromically driven superior colliculus neurons were identified. Of these neurons, 93% ( n = 77) exhibited a burst of activity associated with the onset of the saccade, and 25% ( n = 21) exhibited prelude/build-up activity prior to the onset of a saccade. In addition, it was common to see some activity synchronized with the onset of a visual target (30%, n = 25). In single neurons, these activity profiles could be observed alone or in combination. Superior colliculus neurons that were exclusively visual, however, were not excited by frontal eye field stimulation. We compared the activity of superior colliculus neurons that received frontal eye field input to descriptions of saccade-related neurons made in earlier reports and found that the distribution of neuron types in the orthodromically driven population was similar to the distribution within the overall population. This suggests that the frontal eye field does not selectively influence a specific class of collicular neurons, but, instead has a direct influence on all preparatory, and saccade-related activity within the deep layers of the superior colliculus.

scholarly journals The Effect of Acute Body Unloading on Somatosensory Performance, Motor Activation, and Visuomotor Tasks

2020 ◽  
Vol 11 ◽  
Author(s):  
Ashleigh Marchant ◽  
Nick Ball ◽  
Jeremy Witchalls ◽  
Gordon Waddington ◽  
Ajitkumar P. Mulavara ◽  
...  
Keyword(s):  
Motor Activation ◽  
Visuomotor Tasks

Functional connectivity during real vs imagined visuomotor tasks: an EEG study

Neuroreport ◽  
2004 ◽  
Vol 15 (4) ◽  
pp. 637-642 ◽  
Author(s):  
James M. Kilner ◽  
Yves Paulignan ◽  
Driss Boussaoud
Keyword(s):  
Functional Connectivity ◽  
Visuomotor Tasks

Changes in power and coherence of brain activity in human sensorimotor cortex during performance of visuomotor tasks

Biosystems ◽  
2001 ◽  
Vol 63 (1-3) ◽  
pp. 89-99 ◽  
Author(s):  
F Aoki ◽  
E.E Fetz ◽  
L Shupe ◽  
E Lettich ◽  
G.A Ojemann
Keyword(s):  
Sensorimotor Cortex ◽  
Brain Activity ◽  
Visuomotor Tasks

scholarly journals The effect of visual uncertainty on implicit motor adaptation

2021 ◽  
Vol 125 (1) ◽  
pp. 12-22
Author(s):  
Jonathan S. Tsay ◽  
Guy Avraham ◽  
Hyosub E. Kim ◽  
Darius E. Parvin ◽  
Zixuan Wang ◽  
...  
Keyword(s):  
Motor Adaptation ◽  
Joint Effect ◽  
Sensorimotor Adaptation ◽  
Implicit Motor ◽  
Visuomotor Tasks ◽  
Feedback Method

Sensorimotor adaptation is influenced by both the size and variance of error information. In the present study, we varied visual uncertainty and error size in a factorial manner and evaluated their joint effect on adaptation, using a feedback method that avoids inherent limitations with standard visuomotor tasks. Uncertainty attenuated adaptation but only when the error was small. This striking interaction highlights a novel constraint for models of sensorimotor adaptation.

EFFECTS OF SERIAL VISUOMOTOR TASKS ON CONTINGENT NEGATIVE VARIATION

2003 ◽  
Vol 113 (3) ◽  
pp. 431-443 ◽  
Author(s):  
TETSUO TOUGE ◽  
MICHIKO IKEGUCHI ◽  
KAZUSHI DEGUCHI ◽  
SEISHIRO WATANABE ◽  
SHIGEKI KURIYAMA ◽  
...  
Keyword(s):  
Contingent Negative Variation ◽  
Visuomotor Tasks

Speech Interactions With Linguistic, Cognitive, and Visuomotor Tasks

2005 ◽  
Vol 48 (2) ◽  
pp. 295-305 ◽  
Author(s):  
Christopher Dromey ◽  
Emily Bates
Keyword(s):  
Motor Performance ◽  
Cognitive Activity ◽  
Spatiotemporal Variability ◽  
Linguistic Performance ◽  
Vocal Intensity ◽  
Visuomotor Tasks ◽  
Linguistic Challenges ◽  
Task Conditions ◽  
Potential Interactions ◽  
Speech Motor

Lip movements were examined across several repetitive speaking conditions (speech alone and speaking concurrently with a linguistic, cognitive, or visuomotor challenge task) in 20 young adults. Performance in these nonspeech activities was also compared between isolated tasks and concurrent speech conditions. Linguistic challenges resulted in increased spatiotemporal variability of lip displacement across repetitions. Motor challenges led to more rapid speech with smaller lip displacement. These qualitatively different changes suggest that different aspects of attention are required for linguistic versus manual visuomotor activity. Vocal intensity increased for all concurrent task conditions compared with speech alone, suggesting increased effort compared to the control condition. Scores for linguistic performance decreased when utterance repetition occurred concurrently with the syntactic challenge. These findings reveal that speech motor activity can influence linguistic performance as well as be influenced by it. Although these data come from healthy speakers, they suggest that clinicians working with disordered speakers should not overlook the potential interactions among the demands of language formulation, cognitive activity, and speech motor performance.

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