Concurrent Implicit Adaptation to Multiple Opposite Perturbations - Archive ouverte HAL Access content directly
Journal Articles eNeuro Year : 2023

Concurrent Implicit Adaptation to Multiple Opposite Perturbations

Abstract

Simultaneous adaptation to opposite visuomotor perturbations is known to be difficult. It has been shown to be possible only in situations where the two tasks are associated with different contexts, being either a different colored background, a different area of workspace, or a different follow-through movement. However, many of these elements evoke explicit mechanisms that could contribute to storing separate (modular) memories. It remains to be shown whether simultaneous adaptation to multiple perturbations is possible when they are introduced in a fully implicit manner. Here, we sought to test this possibility using a visuomotor perturbation small enough to eliminate explicit awareness. Participants (N ¼ 25) performed center-out reaching movements with a joystick to five targets located 72°apart. Depending on the target, visual feedback of cursor position was either veridical (one target) or could be rotated by 15 or À5°(two targets each). After 300 trials of adaptation (60 to each target), results revealed that participants were able to fully compensate for each of the imposed rotations. Moreover, when veridical visual feedback was restored, participants exhibited after-effects that were consistent with the rotations applied at each target. Questionnaires collected immediately after the experiment confirmed that none of the participants were aware of the perturbations. These results speak for the existence of implicit processes that can smoothly handle small and opposite visual perturbations when these are associated with distinct target locations.
Fichier principal
Vignette du fichier
Bernier et al (2023) eNeuro-REACHING+CONCURENT+IMPLICIT+ROTATION.pdf (1.75 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

hal-04198008 , version 1 (06-09-2023)

Licence

Attribution

Identifiers

Cite

Pierre-Michel Bernier, Alice Puygrenier, Frederic R Danion. Concurrent Implicit Adaptation to Multiple Opposite Perturbations. eNeuro, 2023, 10, pp.ENEURO.0066 - 23.2023. ⟨10.1523/eneuro.0066-23.2023⟩. ⟨hal-04198008⟩
24 View
11 Download

Altmetric

Share

Gmail Facebook X LinkedIn More