Effect of task-specific execution on accuracy of imagined aiming movements

Yoxon, Emma; Tremblay, Luc; Welsh, Timothy N.

doi:10.1016/j.neulet.2014.11.021

Cited by 21 publications

(24 citation statements)

References 16 publications

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“…Thus, action-effect codes for reciprocal movements at various IDs below 4 might be similar, whereas those for reciprocal movements above 4 may not be very similar to those for reciprocal movements below 4. In some ways, therefore, the contrast between experiments in the current experiment is similar to the contrast between the different task groups in Yoxon et al (2015) even though the movement type (reciprocal) is consistent in the present work.…”

Section: Introductionsupporting

confidence: 84%

“…In line with the findings of previous research (Wong et al, 2013; Yoxon et al, 2015) these changes following experience were predicted to include a decrease in imagined MT such that the imagined MTs might be more similar to actual MTs. The imagined MTs of non-executed movements in Experiment 1 were expected to be affected (be more similar to MTs expected for executed movements) following experience.…”

Section: Introductionsupporting

confidence: 79%

“…Specifically, the main research question involved determining if experience executing reciprocal aiming movements in one set of movement difficulty contexts affected the strength of the relationship between speed and accuracy (Fitts’ law) for imagined movements in non-experienced movement difficult contexts. Yoxon et al (2015) found that executing one type of movement did not influence imagination of different movements in similar contexts (i.e., with comparable accuracy demands), whereas the present study examined whether or not experience executing movement in one set of contexts influences the imagination of the same type of movements in different contexts. Here, the context was defined by the difficulty of the movements.…”

Section: Introductionmentioning

confidence: 61%

“…The design of the current study was based on the studies of Wong et al (2013) and Yoxon, et al (2015). In the action execution task, participants completed a series of aiming movements on a set of six posters.…”

Section: Methodsmentioning

confidence: 99%

“…In a follow-up study, Yoxon, Tremblay and Welsh (2015) tested if improvements in action imagination following task experience are specific to the task. Using the same reciprocal aiming task as Wong et al (2013) for the imagination task, Yoxon et al assessed changes in imagined MTs between two groups who either executed (experienced) the same reciprocal aiming task as in the imagination task or a discrete aiming task with comparable speed-accuracy (ID) demands.…”

Section: Introductionmentioning

confidence: 99%

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The action-specific effect of execution on imagination of reciprocal aiming movements

Yoxon

Pacione

Song

et al. 2017

Human Movement Science

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Past research has shown that the movement times of imagined aiming movements were more similar to actual movement times after the individual has experienced executing the movements. The purpose of the present study was to determine if experience with a set of movements altered the imagination of movements that were not experienced. Participants imagined a series of reciprocal aiming movements in different movement difficulty contexts (created by altering target width and movement amplitude) before and after actually executing a series of aiming movements. The range of difficulties of the imagined movements included difficulty contexts that were within (Experiment 1) or outside (Experiment 2) the range of difficulty experienced during execution. It was found that imagined movement times of movements within the range of movement difficulties experienced were more consistent with Fitts’ Law after movement experience, whereas imagination of more difficult movements was not altered by experience. It is suggested that execution did not enhance imagination of more difficult movements because the relative contributions of motor planning and control to the more difficult movements were different from those in the experienced movements. Thus, the enhancement of imagination through experience might only occur when mechanisms underlying the executed and imagined movements are similar.

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Section: Introductionsupporting

confidence: 84%

Section: Introductionsupporting

confidence: 79%

Section: Introductionmentioning

confidence: 61%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The action-specific effect of execution on imagination of reciprocal aiming movements

Yoxon

Pacione

Song

et al. 2017

Human Movement Science

Self Cite

View full text Add to dashboard Cite

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Executive functions in motor imagery: support for the motor-cognitive model over the functional equivalence model

2020

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The motor-cognitive model holds that motor imagery relies on executive resources to a much greater extent than do overt actions. According to this view, engaging executive resources with an interference task during motor imagery or overt actions will lead to a greater lengthening of the time required to imagine a movement than to execute it physically. This model is in contrast to a currently popular view, the functional equivalence model, which holds that motor imagery and overt action use identical mental processes, and thus should be equally affected by task manipulations. The two competing frameworks were tested in three experiments that varied the amount and type of executive resources needed to perform an interference task concurrent with either an overt or imagined version of a grasping and placing action. In Experiment 1, performing a concurrent calculation task led to a greater lengthening of the time required to execute motor imagery than overt action relative to a control condition involving no interference task. Further, an increase in the number of responses used to index performance affected the timing of motor imagery but not overt actions. In Experiment 2, a low-load repetition task interfered with the timing of motor imagery, but less so than a high load calculation task; both tasks had much smaller effects on overt actions. In Experiment 3, a word generation task also interfered with motor imagery much more than with overt actions. The results of these experiments provide broad support for the motor-cognitive model over the functional equivalence model in showing that interfering with executive functions had a much greater impact on the timing of motor imagery than on overt actions. The possible roles of different executive processes in motor imagery are discussed.

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Examining the equivalence between imagery and execution within the spatial domain – Does motor imagery account for signal-dependent noise?

2020

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Motor imagery is suggested to be functionally equivalent to physical execution as they each utilise a common neural representation. The present study examined whether motor imagery correspondingly reflects the spatial characteristics of physically executed movements, including the signal-dependent noise that typically manifests in more variable end locations (as indicated by effective target width; We). Participants executed or imagined a single, upper-limb target-directed aim in the horizontal medio-lateral direction. The start and end of the imagined movements were indexed by the lifting and lowering of the limb over the home position, respectively. Following each imagined movement, participants had to additionally estimate their imagined end location relative to the target. All the movements had to be completed at a pre-specified criterion time (400 ms, 600 ms, 800 ms). The results indicated that the We increased following a decrease in movement time for execution, but not imagery. Moreover, the total error of imagined movements was greater than the actual error of executed movements. While motor imagery may comprise a neural representation that also contributes to the execution of movements, it is unable to closely reflect the random sources of variability. This limitation of motor imagery may be attributed to the comparatively limited efferent motor signals.

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Effect of task-specific execution on accuracy of imagined aiming movements

Cited by 21 publications

References 16 publications

The action-specific effect of execution on imagination of reciprocal aiming movements

The action-specific effect of execution on imagination of reciprocal aiming movements

Executive functions in motor imagery: support for the motor-cognitive model over the functional equivalence model

Examining the equivalence between imagery and execution within the spatial domain – Does motor imagery account for signal-dependent noise?

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