Context-dependent arm pointing adaptation

Seidler, Rachael D.; Bloomberg, Jacob J.; Stelmach, George E.

doi:10.1016/s0166-4328(00)00347-8

Cited by 46 publications

(24 citation statements)

References 27 publications

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“…+45" and 4 5 " , with symmetrical hand postures was avoided. Seidler, Bloomberg, and Stelmach (2001) suggest that postural cues could be used to help segregate simultaneous sensorimotor adaptation. Hence, this condition was intended to examine whether nonspecific postural cues themselves might aid the subjects' ability to separate the blocks presenting different rotations.…”

Section: Proceedings Of the Human Factors And Ergonomics Society 46thmentioning

confidence: 99%

Kinesthetic Compensation for Misalignment of Teleoperator Controls through Cross-Modal Transfer of Movement Coordinates

Ellis

Adelstein

Welch

2002

Proceedings of the Human Factors and Ergonomics Society Annual

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When a teleoperation system's remote image sensor is oriented so as to misalign the display coordinates in which the user must operate, control difficulties arise. Users then must learn to compensate for a rotational sensorimotor rearrangement. A new compensation technique is proposed in which the hand not used for control provides a kinesthetic cue to the rotation. In essence, the cueing hand provides a kinesthetic reference for the movement of the controlling hand. Users then make their control movements relative to their kinesthetic sense of the cueing hand's orientation. Experiments show that this technique can reduce control disturbances for some misalignments by up to 64%.

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Section: Proceedings Of the Human Factors And Ergonomics Society 46thmentioning

confidence: 99%

Kinesthetic Compensation for Misalignment of Teleoperator Controls through Cross-Modal Transfer of Movement Coordinates

Ellis

Adelstein

Welch

2002

Proceedings of the Human Factors and Ergonomics Society Annual

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“…Most studies that involve cues for visuomotor adaptation, investigated whether the cue can elicit cuecontingent aftereffects of adaptation after only a short amount of training. Significant cue-contingent aftereffects have indeed been found for simply wearing the prism-glasses themselves, i.e., differential aftereffects were found dependent on whether the glasses were being worn or had been taken away (Kravitz, 1972;Kravitz & Yaffe, 1974;Welch, 1971); for auditory tones (Kravitz & Yaffe, 1972); head posture (Seidler, Bloomberg, & Stelmach, 2001); gaze direction (Hay & Pick, 1966;Pick, Hay, & Martin, 1969) and target color (Donderi, Jolicoeur, Berg, & Grimes, 1985). Such aftereffects generally are very quickly obtained but also relatively short-lived, so from these studies it is not directly clear what this will mean for repeated adaptation to the mappings.…”

Section: Introductionmentioning

confidence: 98%

Switching between visuomotor mappings: Learning absolute mappings or relative shifts

2013

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Adaptation to specific visuomotor mappings becomes faster when switching back and forth between them. What is learned when repeatedly switching between the visuomotor mappings: the absolute mappings or the relative shift between the mappings? To test this, we trained participants in a rapid pointing task using a unique color cue as context for each mapping between pointing location and visual feedback. After extensive training, participants adapted to a new mapping using a neutral contextual cue. For catch trials (a change in cue and no visual feedback) different adaptation performances are predicted depending on how the mappings are encoded. When encoding an absolute mapping for each cue, participants would fall back to the mapping associated with the cue irrespective of the state they are currently in. In contrast, when a shift in mapping is encoded for the cue, pointing performance will shift relative to the current mapping by an amount equal to the difference between the previously learned mappings. Results indicate that the contextual cues signal absolute visuomotor mappings rather than relative shifts between mappings.

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“…That is, there were no additional associative cues indicating the required mappings in an a priori fashion as was the case in many previous studies (e.g. Kravitz 1972;Kravitz andYaffe 1972, 1974;Martin et al 1996;Seidler et al 2001;Hay and Pick 1966;Pick et al 1969;Donderi et al 1985;van Dam et al 2013;van Dam and Ernst 2015;Welch 1971). Without associative contexts, there is in principle no need for any long-term learning to occur, since the feedback is only provided after the movement is already complete and thus cannot provide a priori knowledge about the currently correct mapping.…”

Section: Discussionmentioning

confidence: 88%

“…Results were consistent with Mapping Learning despite the relative nature of the error information in the feedback. This shows that (Donderi et al 1985;Fernandez-Ruiz et al 2000Kravitz 1972;Kravitz andYaffe 1972, 1974;Martin et al 1996;Pick et al 1969;Seidler et al 2001;van Dam et al 2013;van Dam and Ernst 2015;Welch 1971). Such associative cues help us to identify the correct mapping that should be used even before a movement is initiated.…”

Section: Introductionmentioning

confidence: 89%

Relative errors can cue absolute visuomotor mappings

Dam

Ernst

2015

Exp Brain Res

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When repeatedly switching between two visuomotor mappings, e.g. in a reaching or pointing task, adaptation tends to speed up over time. That is, when the error in the feedback corresponds to a mapping switch, fast adaptation occurs. Yet, what is learned, the relative error or the absolute mappings? When switching between mappings, errors with a size corresponding to the relative difference between the mappings will occur more often than other large errors. Thus, we could learn to correct more for errors with this familiar size (Error Learning). On the other hand, it has been shown that the human visuomotor system can store several absolute visuomotor mappings (Mapping Learning) and can use associated contextual cues to retrieve them. Thus, when contextual information is present, no error feedback is needed to switch between mappings. Using a rapid pointing task, we investigated how these two types of learning may each contribute when repeatedly switching between mappings in the absence of task-irrelevant contextual cues. After training, we examined how participants changed their behaviour when a single error probe indicated either the often-experienced error (Error Learning) or one of the previously experienced absolute mappings (Mapping Learning). Results were consistent with Mapping Learning despite the relative nature of the error information in the feedback. This shows that errors in the feedback can have a double role in visuomotor behaviour: they drive the general adaptation process by making corrections possible on subsequent movements, as well as serve as contextual cues that can signal a learned absolute mapping.

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Context-dependent arm pointing adaptation

Cited by 46 publications

References 27 publications

Kinesthetic Compensation for Misalignment of Teleoperator Controls through Cross-Modal Transfer of Movement Coordinates

Kinesthetic Compensation for Misalignment of Teleoperator Controls through Cross-Modal Transfer of Movement Coordinates

Switching between visuomotor mappings: Learning absolute mappings or relative shifts

Relative errors can cue absolute visuomotor mappings

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