Cognitive processes and a Centre-of-Pressure error-based moving light-touch Biofeedback
| Autor: | Fabien Verite, Wael Bachta |
|---|---|
| Přispěvatelé: | Institut des Systèmes Intelligents et de Robotique (ISIR), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Assistance aux Gestes et Applications THErapeutiques (AGATHE), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM), Gestionnaire, Hal Sorbonne Université, Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut des Systèmes Intelligents et de Robotique (ISIR), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Male
0301 basic medicine biofeedback medicine.medical_specialty Computer science Movement medicine.medical_treatment [SDV]Life Sciences [q-bio] Sensory system Biofeedback Somatosensory system Motion (physics) Fingers 03 medical and health sciences Cognition 0302 clinical medicine Physical medicine and rehabilitation light touch medicine Humans Postural Balance Vision Ocular Balance (ability) General Neuroscience Cognitive flexibility Biofeedback Psychology Proprioception [SDV] Life Sciences [q-bio] 030104 developmental biology voluntary control Touch Female 030217 neurology & neurosurgery cognitive processes Center of pressure (fluid mechanics) |
| Zdroj: | Neuroscience Letters Neuroscience Letters, Elsevier, 2021, pp.135743. ⟨10.1016/j.neulet.2021.135743⟩ Neuroscience Letters, 2021, pp.135743. ⟨10.1016/j.neulet.2021.135743⟩ |
| ISSN: | 0304-3940 |
| DOI: | 10.1016/j.neulet.2021.135743⟩ |
| Popis: | International audience; Lightly touching an earth-fixed external surface with the forefinger provides somatosensory information that reduces the Center of Pressure (CoP) oscillations. If this surface were to move slowly, the Central Nervous System (CNS) would misinterpret its movement as body self-motion, and involuntary compensatory sway responses would appear, resulting in a significant coupling between finger and CoP motions. We designed a forefinger moving light-touch biofeedback based on this finding, which controls the surface velocity to drive the CoP towards a target position. Here, we investigate this biofeedback resistance to cognitive processes. In addition to a baseline, the experimental protocol includes four main conditions. In the first, participants were utterly naive about the feedback. Then, they received additional reliable sensory information. The third condition ensured their full awareness of the external nature of the surface motion. Finally, the experimenter notified them that the external motion drives their balance and asked them to reject its influence. Our investigation shows that despite the robustness of the proposed biofeedback, light-touch remains penetrable by cognitive processes. For participants to dramatically reduce the existing coupling between the finger and CoP motions, they should be aware of the external motion, how it impacts sway, and actively reject its influence. The main implication of our findings is that light-touch exhibits the same cognitive flexibility as vision when artificially stimulated. This could be interpreted as a defense mechanism to re-weight these two sensory inputs in a moving environment. |
| Databáze: | OpenAIRE |
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