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We designed motor learning support for acquiring mo-tor skills involving neural mechanisms. We should be able to acquire neural information by analyzing whole-body muscle data, because the nervous system controls the musculoskeletal system and lengths and forces information is fed back to the nervous system. Motor information is calculated by mappi...
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... purpose is to provide information processing that extracts characteristics needed for monitoring and sup- porting motor learning to improve motor skill. Specifi- cally, motor information is converted to neural informa- tion based on the anatomical structure of the nervous sys- tem in the spinal cord (Fig.1). Their characteristics are calculated and their correspondence to the evaluation are accumulated. ...
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... found afferent neural information (muscle length information) sent from the muscle spindle of the entire body to the spinal cord by calculation. The time window size was set to N 9. Fig.10 and Fig.11 show temporal changes in neural information near cervical enlargement (C4 to C8) and lumbar enlargement of the spinal cord (L2 to L5, S1). ...
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... found afferent neural information (muscle length information) sent from the muscle spindle of the entire body to the spinal cord by calculation. The time window size was set to N 9. Fig.10 and Fig.11 show temporal changes in neural information near cervical enlargement (C4 to C8) and lumbar enlargement of the spinal cord (L2 to L5, S1). ...
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... this way, relative phase differences between segments are obtained. Figure 12 plots correlation and the corresponding time of neural information on spinal nerves. These correspond to the fifth cervical nerve (C5) and the second lumbar nerve (L2). ...
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... corresponding time plot (Fig.12(a)) for the fifth cervical nerve (C5) is smooth with a slope below 1 in the first half. ...
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... to trial 1, trial 2 indicates that the first half has quick change. In contrast, the second lumbar nerve (L2) (Fig.12(b)) has a sharp slope between 65 frames and 70 frames and a smooth slope at other times. ...
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... to 1, trial 2 has a smaller velocity where the slope is sharp. Figure 13 plots the timing chart for two trials after the corresponding time is read from correlation. For Fig.13(a) and Fig.13(b), the upper stage of the horizon- tal axis is the time for trial 1, while the lower stage is corresponding time for trial 2. Fig.13(c) shows the corre- sponding time between different nerves of trial 2 based on the time of trial 1 of Fig.13(a) and Fig.13(b). ...
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... 13 plots the timing chart for two trials after the corresponding time is read from correlation. For Fig.13(a) and Fig.13(b), the upper stage of the horizon- tal axis is the time for trial 1, while the lower stage is corresponding time for trial 2. Fig.13(c) shows the corre- sponding time between different nerves of trial 2 based on the time of trial 1 of Fig.13(a) and Fig.13(b). The upper stage of the horizontal axis in Fig.13(c) is the time of the fifth cervical nerve (C5), while the lower stage of the hor- izontal axis is the corresponding time of the second lum- bar nerve (L2). ...
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... 13 plots the timing chart for two trials after the corresponding time is read from correlation. For Fig.13(a) and Fig.13(b), the upper stage of the horizon- tal axis is the time for trial 1, while the lower stage is corresponding time for trial 2. Fig.13(c) shows the corre- sponding time between different nerves of trial 2 based on the time of trial 1 of Fig.13(a) and Fig.13(b). ...
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... 13 plots the timing chart for two trials after the corresponding time is read from correlation. For Fig.13(a) and Fig.13(b), the upper stage of the horizon- tal axis is the time for trial 1, while the lower stage is corresponding time for trial 2. Fig.13(c) shows the corre- sponding time between different nerves of trial 2 based on the time of trial 1 of Fig.13(a) and Fig.13(b). ...
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... 13 plots the timing chart for two trials after the corresponding time is read from correlation. For Fig.13(a) and Fig.13(b), the upper stage of the horizon- tal axis is the time for trial 1, while the lower stage is corresponding time for trial 2. Fig.13(c) shows the corre- sponding time between different nerves of trial 2 based on the time of trial 1 of Fig.13(a) and Fig.13(b). ...
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... 13 plots the timing chart for two trials after the corresponding time is read from correlation. For Fig.13(a) and Fig.13(b), the upper stage of the horizon- tal axis is the time for trial 1, while the lower stage is corresponding time for trial 2. Fig.13(c) shows the corre- sponding time between different nerves of trial 2 based on the time of trial 1 of Fig.13(a) and Fig.13(b). The upper stage of the horizontal axis in Fig.13(c) is the time of the fifth cervical nerve (C5), while the lower stage of the hor- izontal axis is the corresponding time of the second lum- bar nerve (L2). ...
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... Fig.13(a) and Fig.13(b), the upper stage of the horizon- tal axis is the time for trial 1, while the lower stage is corresponding time for trial 2. Fig.13(c) shows the corre- sponding time between different nerves of trial 2 based on the time of trial 1 of Fig.13(a) and Fig.13(b). The upper stage of the horizontal axis in Fig.13(c) is the time of the fifth cervical nerve (C5), while the lower stage of the hor- izontal axis is the corresponding time of the second lum- bar nerve (L2). The corresponding time was taken each 5 frames. ...
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... timing misalignment of the fifth cervical nerve (C5) focuses on the first half ( Fig.13(a)). 20 frames from 50 to 70 frames in trial 1 correspond to 10 frames from 26 to 36 frames in trial 2, indicating half of the time. ...
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... the latter half, 36 to 46 frames correspond to 70 to 80 frames in trial 1 at the same speed. The timing misalignment of the second cervical nerve (L2) is slight found in both the first and latter halves (Fig.13(b)). 65 to 70 frames in trial 1 correspond to 35 to 40 frames in trial 2 at the same speed on average. ...
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... and after them, the time for 11 frames is needed for 15 frames, and 7 frames for 10 frames. From the corresponding time of C5 and L2 in trial 2 (Fig.13(c)), C5 activity begins later than L2 and proceeds for such a delay. ...
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... mentioned, it is possible to calculate the condition of a local and global coordination by calculating oordination hierarchically for each spinal cord segment. Figure 15 shows how the intrasegmental coordination of spinal cord is arranged at the C5 segment. C5 controls the upper body muscles such as the greater pectoral mus- cle, brachial muscle, and levator scapulae muscle. ...
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... is a difference even in the same spinal cord segment, but coordination is high as a whole and minimum correlation was 0.949. Fig.16 shows the correlation representing the intersegmental co- ordination of spinal cord in a matrix. ...
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Citations
... Motor information is calculated by mapping motioncapture data on to a musculoskeletal human model. Neural information represents the set of motor information on the muscles innervated by the arbitrary segment [5]. ...
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