6. Describing Movement Control at Two Levels of Abstraction

Jagacinski, Richard J.; Plamondon, Brian D.; Miller, Richard A.

doi:10.1016/s0166-4115(08)62310-9

Cited by 9 publications

(2 citation statements)

References 29 publications

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“…These quick pulselike movements are not captured by the more slowly changing input reconstruction model or the variable time delay model, and they may need to be modeled as a second, possibly open-loop, mode of tracking. Such an episodic model would be more complex than those presented in this article, in that both the structure of multiple motion generators and the rules for starting and stopping them must be specified (e.g., see Jagacinski, Plamondon, & Miller, 1987). Repperger and Vickmanis (1979) have previously suggested that subjects may switch to a different tracking mode when the target velocity and acceleration become large.…”

Section: Discussionmentioning

confidence: 99%

Progression-regression effects in tracking repeated patterns.

Jagacinski¹,

Hah²

1988

Journal of Experimental Psychology: Human Perception and Perfor

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Subjects used a position control system to perform compensatory tracking of a repeated input pattern. Tracking error was roughly proportional to the velocity of the input signal. Error magnitude decreased with practice and increased with the addition of a concurrent memory task. These effects can be modeled as progressive and regressive changes in how well subjects used control movement velocity and displayed error velocity to anticipate the input pattern and thereby reduce their effective time delay. The weighting of velocity cues in this model progressed with practice and regressed with the secondary task, even though the secondary task required no concurrent visual scanning or simultaneous motor response. This regression effect appears to indicate cognitive interference with the anticipation process. Stationary linear models provide a good approximation to the movement patterns; however, these models do not account for episodes of rapid pulse-like movements that were revealed in the ensemble-averaged trajectories.

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Section: Discussionmentioning

confidence: 99%

Progression-regression effects in tracking repeated patterns.

Jagacinski¹,

Hah²

1988

Journal of Experimental Psychology: Human Perception and Perfor

Self Cite

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show abstract

“…A discrete control constrains the operator to act at the control margins. This is a common strategy for measuring people's ability to "tune" to the dynamic limits of a control problem (e.g., Jagacinski, Plamondon, & Miller, 1987;Pew, 1964). However, this constraint may limit generalization to many natural vehicle control situations where more flexible, proportional control opportunities are afforded.…”

Section: B Constant Vertical Velocity Conditionmentioning

confidence: 99%