title: Interactions between human explicit and implicit perceptual motor learning shown by kinematic variables.
abstract: The goal of this study was to investigate in non-impaired humans the interaction between explicit and implicit learning in a catching task. The situation presented probabilistic contingencies between visual signals and various final pathways of the target. Subjects were asked to practice the interception task for 320 trials. Explicit instructions describing the probabilistic rules were given prior to (11 subjects), or in the middle of (11 subjects), physical practice. Eleven subjects not provided with verbal instructions served as control subjects. We measured the combination between explicit verbal instructions and implicit learning via kinematics of the end-effector and an outcome measure (i.e. spatial error). The time when explicit instructions were given resulted in systematic changes in the spatio-temporal ordering of the action. These data suggested that analyzing the way the task is executed with scrutiny allows a new understanding of how the aforementioned learning systems interact.
authors.affiliation: Acquisition et Transmission des Habiletés Motrices (EA 2044), Université Paul Sabatier, U.F.R.S.T.A.P.S. 118 Route de Narbonne, 31062 Toulouse Cedex 4, France. lagarde@cict.fr
authors.forename: Julien
authors.initials: J
authors.lastname: Lagarde
authors.forename: Li
authors.initials: L
authors.lastname: Li
authors.forename: Bernard
authors.initials: B
authors.lastname: Thon
authors.forename: Richard
authors.initials: R
authors.lastname: Magill
authors.forename: Emille
authors.initials: E
authors.lastname: Erbani
mesh_terms: D000328:Adult; D001696:Biomechanical Phenomena; D006801:Humans; D007858:Learning / Q000502:physiology*; D009046:Motor Neurons / Q000502:physiology*; D009048:Motor Skills / Q000502:physiology*; D009068:Movement / Q000502:physiology*