What's left of the mirror illusion when the mirror can no longer be seen? Bilateral integration of proprioceptive afferents!
| Autor: | Michel Guerraz, Marie Chancel, Anne Kavounoudias |
|---|---|
| Přispěvatelé: | Laboratoire de Neurosciences intégratives et adaptatives (LNIA), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Psychologie et NeuroCognition (LPNC ), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]) |
| Rok vydání: | 2017 |
| Předmět: |
Male
medicine.medical_specialty Time Factors media_common.quotation_subject Illusion Kinematics Motor Activity 050105 experimental psychology Functional Laterality Sensory integration 03 medical and health sciences Young Adult 0302 clinical medicine Physical medicine and rehabilitation Perception Mirror paradigm medicine Psychophysics Humans 0501 psychology and cognitive sciences Muscle Skeletal Visual occlusion media_common Lenses Communication Proprioception business.industry General Neuroscience Perceived visual angle 05 social sciences Kinesthetic learning Illusions Sagittal plane Biomechanical Phenomena medicine.anatomical_structure Kinesthesia [SCCO.PSYC]Cognitive science/Psychology Arm Visual Perception Female Psychology business 030217 neurology & neurosurgery |
| Zdroj: | Neuroscience Neuroscience, Elsevier-International Brain Research Organization, 2017, 362, pp.118-126. ⟨10.1016/j.neuroscience.2017.08.036⟩ Neuroscience, 2017, 362, pp.118-126. ⟨10.1016/j.neuroscience.2017.08.036⟩ |
| ISSN: | 1873-7544 0306-4522 |
| DOI: | 10.1016/j.neuroscience.2017.08.036⟩ |
| Popis: | International audience; Recent data suggest that manipulating the muscle afferents of one arm affects both ipsilateral and contralateral perceptual estimates. Here, we used the mirror paradigm to study the bimanual integration of kinesthetic muscle afferents. The reflection of a moving hand in a mirror positioned in the sagittal plane creates an illusion of symmetrical bimanual movement. Although vision clearly has a role in kinesthesia, its role in the mirror illusion might have been overestimated. Conversely, the role of bimanual integration of muscle afferents might have been underestimated. We hypothesized that muscle-proprioceptive afferents of the passively displaced arm (the image of which was reflected in the mirror) are involved in this illusion. We evoked in 19 healthy adult participants the mirror illusion by displacing passively their left arm, the image of which was reflected in the mirror. Once participants experienced the illusion that their hidden right arm was moving, we then either occluded their view of the mirror (using occlusive glasses) and/or prevent the passive left arm displacement. Participants' illusion characteristics (duration and kinematic) under these conditions were compared with classical mirror illusion (without visual occlusion). We found that as long as the arm was still moving, the kinesthetic illusion decayed slowly after visual occlusion. These findings suggest that the mirror illusion results from the combination of visuo-proprioceptive signals from the two arms and is not purely visual in origin. Our findings also support the more general concept whereby proprioceptive afferents are integrated bilaterally for the purpose of kinesthesia during bimanual tasks. |
| Databáze: | OpenAIRE |
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