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J Mot Behav. 2017 Mar-Apr;49(2):185-199. doi: 10.1080/00222895.2016.1169984. Epub 2016 Sep 3.

Subjective Estimation of Task Time and Task Difficulty of Simple Movement Tasks.

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a Department of Systems Engineering and Engineering Management , City University of Hong Kong , Kowloon Tong , Hong Kong.


It has been demonstrated in previous work that the same neural structures are used for both imagined and real movements. To provide a strong test of the similarity of imagined and actual movement times, 4 simple movement tasks were used to determine the relationship between estimated task time and actual movement time. The tasks were single-component visually controlled movements, 2-component visually controlled, low index of difficulty (ID) moves and pin-to-hole transfer movements. For each task there was good correspondence between the mean estimated times and actual movement times. In all cases, the same factors determined the actual and estimated movement times: the amplitudes of movement and the IDs of the component movements, however the contribution of each of these variables differed for the imagined and real tasks. Generally, the standard deviations of the estimated times were linearly related to the estimated time values. Overall, the data provide strong evidence for the same neural structures being used for both imagined and actual movements.


estimated movement times; index of difficulty; movement task difficulty

[Indexed for MEDLINE]

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