Asymmetric learning transfer between imagined viewer- and object-rotations: Evidence of a hierarchical organization of spatial reference frames |
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| Institution: | 1. Brain Sciences Center, Veterans Affairs Medical Center, Minneapolis, MN, USA;2. Department of Neuroscience, University of Minnesota, Minneapolis, MN, USA;3. Department of Psychiatry, Geneva University Hospitals, Geneva, Switzerland;1. Department of Psychology, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, SE1 1UL, United Kingdom;2. Psychology Division, Department of Life Sciences, Brunel University London, UB8 3PH, United Kingdom;3. Division of Brain Sciences Department of Medicine, Imperial College London, W6 8RP, United Kingdom;1. Basque Center on Cognition, Brain and Language (BCBL), Donostia-San Sebastian, Spain;2. IKERBASQUE, Basque Foundation for Science, Bilbao, Spain;3. Department of Basque Language and Communication, EHU/UPV, Bilbao, Spain;1. Institut des Systèmes Intelligents et de Robotique, CNRS UMR 7722, Université Pierre et Marie Curie, Paris, France;2. Institut Jean Nicod (ENS – EHESS – CNRS), Département d’Etudes Cognitives, Ecole Normale Supérieure, PSL Research University, Paris, France;3. Department of Experimental Psychology, Crossmodal Research Laboratory, University of Oxford, Oxford, United Kingdom;1. EA4532, unité de recherche complexité, innovation et activités motrices et sportives, université Paris-Sud, 15, avenue George-Clémenceau, 91405 Orsay cedex, France;2. LIMSI, CNRS, université Paris-Sud, BP 133, 91403 Orsay cedex, France;3. EA 4386, laboratoire parisien de psychologie sociale, université Paris Ouest Nanterre La Défense, 200, avenue de la République, 92001 Nanterre cedex, France;4. EA 7313, laboratoire LIRTES, université Paris Est Créteil, bâtiment La Pyramide, 80, avenue du Général-de-Gaulle, 94009 Créteil cedex, France;5. CIAMS, université Paris-Sud, université Paris-Saclay, UFR STAPS, bâtiment 335, rue Pierre-de-Coubertin, 91405 Orsay cedex, France;6. CIAMS, université de Orléans, avenue du Parc-Floral, BP 6749, 45067 Orléans cedex, France |
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| Abstract: | Neural resources subserving spatial processing in either egocentric or allocentric reference frames are, at least partly, dissociated. However, it is unclear whether these two types of representations are independent or whether they interact. We investigated this question using a learning transfer paradigm. The experiment and material were designed so that they could be used in a clinical setting. Here, we tested healthy subjects in an imagined viewer-rotation task and an imagined object-rotation task. The order of the tasks was counterbalanced across subjects. The results showed that subjects who did the viewer-rotation task first had fewer errors and shorter latencies of response in the object-rotation task, whereas subjects who did the object-rotation task first had little if any advantage in the viewer-rotation task. In other words, the results revealed an asymmetric learning transfer between tasks, which suggests that spatial representations are hierarchically organized. Specifically, the results indicate that the viewer-rotation task engaged allocentric representations and egocentric representations, whereas the object-rotation task engaged only egocentric representations. |
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