Short-Term Memory for Kinesthetic Movement Information: Influence of Location Cues on Recall of Distance

Ashby, Alan A.; Shea, Charles H.; Howard, Rose M.

doi:10.2466/pms.1980.51.2.403

Cited by 8 publications

(2 citation statements)

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“…Usually, these kinds of tasks are a combination of the perception of distance and position [1], [2], [3], [4]. In general, reproducing a position yields a movement ending closer to the physical location than reproducing a distance [5], [6], [7].…”

Section: Introductionmentioning

confidence: 99%

Haptic Discrimination of Distance

2014

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While quite some research has focussed on the accuracy of haptic perception of distance, information on the precision of haptic perception of distance is still scarce, particularly regarding distances perceived by making arm movements. In this study, eight conditions were measured to answer four main questions, which are: what is the influence of reference distance, movement axis, perceptual mode (active or passive) and stimulus type on the precision of this kind of distance perception? A discrimination experiment was performed with twelve participants. The participants were presented with two distances, using either a haptic device or a real stimulus. Participants compared the distances by moving their hand from a start to an end position. They were then asked to judge which of the distances was the longer, from which the discrimination threshold was determined for each participant and condition. The precision was influenced by reference distance. No effect of movement axis was found. The precision was higher for active than for passive movements and it was a bit lower for real stimuli than for rendered stimuli, but it was not affected by adding cutaneous information. Overall, the Weber fraction for the active perception of a distance of 25 or 35 cm was about 11% for all cardinal axes. The recorded position data suggest that participants, in order to be able to judge which distance was the longer, tried to produce similar speed profiles in both movements. This knowledge could be useful in the design of haptic devices.

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Section: Introductionmentioning

confidence: 99%

Haptic Discrimination of Distance

2014

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“…Even though most of the motor learning literature supports the salience of the cue of location, Schwartz points out that Ashby, Shea, and Howard (1980) found that the ". .. amplitude of movement or distance traveled by a limb can be recalled accurately without the availability of information concerning location.…”

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Distance and Location Cues in Movement

Gliner¹,

Davis²

1984

The Occupational Therapy Journal of Research

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Schwartz (1984) in his commentary on our article concluded that the authors had "... not provided reliable and valid evidence to justify conclusions at this juncture." These conclusions were (1) that the target point of the movement was the most important cue for movement accuracy, and (2) that rapid movements produce greater errors in direction than do slow movements. We would first like to address Schwartz'S criticisms and then point out why, from a motor control theoretical standpoint, the endpoint or location point of a movement is essential.Schwartz brought up a number of criticisms of our article. Some of these criticisms we consider valid, have relevance to our conclusions, and therefore need to be addressed in detail. Two other criticisms were minor and have little bearing on the outcome of our study. We will address these minor criticisms first. One minor criticism concerned the operational definition of starting point and endpoint. We feel that not only are starting

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Discrimination of Distance

Beek

2017

Springer Series on Touch and Haptic Systems

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Short-Term Memory for Kinesthetic Movement Information: Influence of Location Cues on Recall of Distance

Abstract: To isolate location and distance cues a two-dimensional movement task was given to 32 college students. Reliability of location cues was varied; a criterion distance was recalled accurately with and without location cues.

Cited by 8 publications

References 4 publications

Haptic Discrimination of Distance

Haptic Discrimination of Distance

Distance and Location Cues in Movement

Discrimination of Distance

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