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Assessing and defining explicit processes in visuomotor adaptation.

S Heirani Moghaddam1, R Chua2, E K Cressman3

  • 1Sensorimotor Control Laboratory, School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, Ottawa, ON, K1N 6N5, Canada. sheir079@uottawa.ca.

Experimental Brain Research
|April 28, 2021
PubMed
Summary
This summary is machine-generated.

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The Process Dissociation Procedure (PDP) and Verbal Report Framework (VRF) methods reveal explicit and implicit processes in visuomotor adaptation. Results show explicit adaptation via VRF doesn't always reflect awareness, indicating method-dependent underlying processes.

Area of Science:

  • Cognitive Neuroscience
  • Motor Control
  • Human Psychology

Background:

  • Visuomotor adaptation involves both conscious (explicit) and unconscious (implicit) processes.
  • The Process Dissociation Procedure (PDP) and Verbal Report Framework (VRF) are common methods for assessing these processes.
  • Understanding how these methods compare is crucial for accurately measuring adaptation.

Purpose of the Study:

  • To compare the Process Dissociation Procedure (PDP) and Verbal Report Framework (VRF) in assessing explicit and implicit visuomotor adaptation.
  • To determine if explicit adaptation measured by VRF correlates with post-experiment awareness of visuomotor distortion.
  • To investigate method-dependent differences in visuomotor adaptation processes.

Main Methods:

  • Three groups (PDP, VRF, VRF No-Cursor) underwent visuomotor rotation training in a virtual environment.
Keywords:
Explicit adaptationImplicit adaptationProcess dissociation procedureVerbal report frameworkVisuomotor adaptation

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  • Explicit and implicit adaptations were assessed after each training block and again later.
  • Post-experiment awareness was measured via questionnaire and drawing tasks.

    • Main Results:

    • All groups showed adaptation to the visuomotor rotation.
    • Explicit and implicit adaptation magnitudes and retention were similar between PDP and VRF groups.
    • VRF group showed greater implicit adaptation than VRF No-Cursor group.
    • Explicit adaptation in the VRF group did not correlate with awareness of the rotation.

    Conclusions:

    • Explicit adaptation measured by standard VRF methods may not reflect an individual's conscious awareness of visuomotor changes.
    • The underlying processes of visuomotor adaptation appear to be dependent on the assessment method employed (PDP vs. VRF).
    • Further research is needed to reconcile findings across different assessment techniques in motor learning.