File:Towards-a-Naturalistic-Brain-Machine-Interface-Hybrid-Torque-and-Position-Control-Allows-pone.0052286.s001.ogv
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Towards-a-Naturalistic-Brain-Machine-Interface-Hybrid-Torque-and-Position-Control-Allows-pone.0052286.s001.ogv (Ogg Theora video file, length 40 s, 560 × 420 pixels, 517 kbps, file size: 2.46 MB)
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DescriptionTowards-a-Naturalistic-Brain-Machine-Interface-Hybrid-Torque-and-Position-Control-Allows-pone.0052286.s001.ogv |
English: Manual task overlaid with offline predictions show robust decoding of movement trajectories. Subject is performing random target pursuit (RTP) task using the right upper limb with mounted planar exoskeletal robot. Black tracings with white circular visual feedback cursor at the end-point represent the actual arm. Origin point at around (5,−15) represents the shoulder location and first angle represents the elbow location. Light blue arm with a diamond-shaped visual feedback cursor at the end-point is the simulation of offline predictions of the virtual arm using the past one second of neural activity of M1. The small or large size of the visual feedback cursor at the end-point indicates the low or high load environment, respectively. was set to 20. The subject was not given any visual or somatosensory feedback of these reconstructions while doing the manual task. Yellow color of the visual feedback cursor indicates that the subject is looking away from the screen (screen margin represented by a dark blue line, bottom right corner of which is visible; yellow color for the purposes of this video only – the actual task shows white circle throughout the task for visual feedback purposes). Task execution time (in seconds) is displayed on the top left corner. Big or small cursor size represents high or low viscous loads (see Table 1) on the arm, as applied by the KINARM motors. Note that the virtual arm reconstructions match closely with the real arm movements and do carry a ‘projectile’ component of the movement as occurs in natural movements. Our algorithm does not use or need heavy filtering or smoothing of the predictions, partly because the torque predictions automatically get ‘filtered’ by the equations of dynamics containing inertial properties of the virtual limb. |
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Source | Video S1 from Chhatbar P, Francis J (2013). "Towards a Naturalistic Brain-Machine Interface: Hybrid Torque and Position Control Allows Generalization to Novel Dynamics". PLOS ONE. DOI:10.1371/journal.pone.0052286. PMC: 3554733. | ||
Author | Chhatbar P, Francis J | ||
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current | 19:13, 29 January 2013 | 40 s, 560 × 420 (2.46 MB) | Open Access Media Importer Bot (talk | contribs) | Automatically uploaded media file from Open Access source. Please report problems or suggestions here. |
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Author | Chhatbar P, Francis J |
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Usage terms | http://creativecommons.org/licenses/by/3.0/ |
Image title | Manual task overlaid with offline predictions show robust decoding of movement trajectories. Subject is performing random target pursuit (RTP) task using the right upper limb with mounted planar exoskeletal robot. Black tracings with white circular visual feedback cursor at the end-point represent the actual arm. Origin point at around (5,?15) represents the shoulder location and first angle represents the elbow location. Light blue arm with a diamond-shaped visual feedback cursor at the end-point is the simulation of offline predictions of the virtual arm using the past one second of neural activity of M1. The small or large size of the visual feedback cursor at the end-point indicates the low or high load environment, respectively. was set to 20. The subject was not given any visual or somatosensory feedback of these reconstructions while doing the manual task. Yellow color of the visual feedback cursor indicates that the subject is looking away from the screen (screen margin represented by a dark blue line, bottom right corner of which is visible; yellow color for the purposes of this video only ? the actual task shows white circle throughout the task for visual feedback purposes). Task execution time (in seconds) is displayed on the top left corner. Big or small cursor size represents high or low viscous loads (see Table 1) on the arm, as applied by the KINARM motors. Note that the virtual arm reconstructions match closely with the real arm movements and do carry a ?projectile? component of the movement as occurs in natural movements. Our algorithm does not use or need heavy filtering or smoothing of the predictions, partly because the torque predictions automatically get ?filtered? by the equations of dynamics containing inertial properties of the virtual limb. |
Software used | Xiph.Org libtheora 1.1 20090822 (Thusnelda) |
Date and time of digitizing | 2013 |
Categories:
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