HUMAN GAIT CONTROL IN SINGLE LIMB SUPPORT USING DIFFERENTIAL FLATNESS

2016 ◽  
pp. 539-547
Author(s):  
ELKIN YESID VESLIN DÍAZ ◽  
MAX SUELL DUTRA ◽  
JULES GUISLAIN SLAMA
Keyword(s):  
Human Gait ◽  
Differential Flatness ◽  
Gait Control ◽  
Single Limb Support

EEG time-frequency analysis provides arguments for arm swing support in human gait control

2019 ◽  
Vol 70 ◽  
pp. 71-78 ◽  
Author(s):  
Joyce B. Weersink ◽  
Natasha M. Maurits ◽  
Bauke M. de Jong
Keyword(s):  
Frequency Analysis ◽  
Human Gait ◽  
Gait Control ◽  
Arm Swing ◽  
Time Frequency Analysis ◽  
Time Frequency

The Speed-Accuracy Trade-Off in Human Gait Control When Running Towards Targets

2000 ◽  
Vol 16 (4) ◽  
pp. 331-341 ◽  
Author(s):  
Elizabeth J. Bradshaw ◽  
W.A. Sparrow
Keyword(s):  
Linear Relationship ◽  
Human Gait ◽  
Target Area ◽  
Gait Control ◽  
Trade Off ◽  
Infra Red ◽  
Run Up ◽  
Stride Duration ◽  
Speed Accuracy ◽  
Approach Time

The study examined adjustments to gait when positioning the foot within a narrow target area at the end of an approach or “run-up” similar to the take-off board in long jumping. In one task, participants (n = 24) sprinted toward and placed their foot within targets of four different lengths for 8-m and 12-m approach distances while “running through” the target. In a second task, participants (n = 12) sprinted toward and stopped with both feet in the target area. Infra-red timing lights were placed along the approach strip to measure movement times, with a camera positioned to view the whole approach to measure the total number of steps, and a second camera placed to view the final stride, which was analyzed using an in-house digitizing system to calculate the final stride characteristics. In the run-through task, a speed-accuracy trade-off showing a linear relationship (r = 0.976, p < .05) between target length and approach time was found for the 8-m amplitude. An accelerative sub-movement and a later targeting or “homing-in” sub-movement were found in the approach kinematics for both amplitudes. Final stride duration increased, and final stride velocity decreased with a decrease in target length.

scholarly journals Research on blood oxygen activity in cerebral cortical motor function areas with adjustment intention during gait

2020 ◽  
pp. 1-10
Author(s):  
Chunguang Li ◽  
Yufei Zhu ◽  
Wei Qu ◽  
Lining Sun
Keyword(s):  
Cerebral Cortex ◽  
Motor Function ◽  
Premotor Cortex ◽  
Human Gait ◽  
Blood Oxygen ◽  
Gait Control ◽  
Speed Reduction ◽  
Speed Increase ◽  
Imaging Results ◽  
Speed Adjustment

BACKGROUND: The study of the neural mechanism of human gait control can provide a theoretical basis for the treatment of walking disorders or the improvement of rehabilitation strategies, and further promote the functional rehabilitation of patients with movement disorders. However, the performance and changes of cerebral cortex activity corresponding to gait adjustment intentions are still not clear. OBJECTIVE: The purpose of this study was to detect the blood oxygen activation characterization of the cerebral cortex motor function area when people have the intention to adjust gait during walking. METHODS: Thirty young volunteers (21 ± 1 years old) performed normal walking, speed increase, speed reduction, step increase, and step reduction, during which oxygenated hemoglobin (HbO), deoxygenated hemoglobin (HbR), and total oxyhemoglobin (HbT) information in the prefrontal cortex (PFC), premotor cortex (PMC), supplementary motor area (SMA) was continuous monitored using near-infrared brain functional imaging. RESULTS: (1) With the intention to adjust gait, the HbO concentration in the SMA increased significantly, while the HbT concentration in the medial-PFC decreased significantly. (2) In the HbO concentration, step reduction is more activated than the step increase in the left-PMC (p= 0.0130); step adjustment is more activated than speed adjustment in the right-PMC (p= 0.0067). In the HbR concentration, the speed reduction is more activated than the speed increase in the left-PFC (p= 0.0103). CONCLUSIONS: When the intention of gait adjustment occurs, the increase of HbO concentration in the SMA indicates the initial stage of gait adjustment will increase the cognitive-locomotor demand of the brain. The left brain area meets the additional nerve needs of speed adjustment. The preliminary findings of this study can lay an important theoretical foundation for the realization of gait control based on fNIRS-BCI technology.

Research on Blood Oxygen Activity in Cerebral Cortical Motor Function Areas With Adjustment Intention During Gait

2020 ◽  
Author(s):  
Chunguang Li ◽  
Yufei Zhu ◽  
Wei Qu ◽  
Lining Sun
Keyword(s):  
Cerebral Cortex ◽  
Motor Function ◽  
Brain Area ◽  
Human Gait ◽  
Blood Oxygen ◽  
Gait Control ◽  
Speed Reduction ◽  
Speed Increase ◽  
Gait Parameters ◽  
The Right

Abstract BACKGROUND: The study of the neural mechanism of human gait control can provide a theoretical basis for the treatment of walking disorders or the improvement of rehabilitation strategies, and further promote the functional rehabilitation of patients with movement disorders. However, the performance and changes of cerebral cortex activity corresponding to gait adjustment intentions arestill not clear. OBJECTIVE: The purpose of this study was to detect the blood oxygen activation characterization of the cerebral cortex motor function area when people have intention to adjust gait during walking. METHODS: 30 young volunteers (21 ± 1 years old) perform normal walking (NW), speed increase (DI), speed reduction (DR), step increase (PI) and step reduction (PR), during which continuous monitoring of oxygenated hemoglobin (HbO), deoxygenated hemoglobin (HbR) and total oxyhemoglobin (HbT) information in the prefrontal cortex (PFC), premotor cortex (PMC), supplementary motor area (SMA) using near infrared brain functional imaging.RESULTS: (1) With the intention to adjust gait, the HbO concentration in the SMA increased significantly (p=0.0029), while the HbT concentration in the Medial-PFC decreased significantly (p=0.0088). (2) In the HbO concentration, step reduction is more activated than the step increase in the Left-PMC (p=0.0130); step adjustment is more activated thanspeed adjustment in the Right-PMC (p=0.0067).In the HbR concentration, speed reduction is more activated than the speed increase in the Left-PFC(p=0.0103). In the HbT concentration, an increase in gait parameters is more activated than the decrease in gait parameters in the Left-PFC(p=0.0042).CONCLUSIONS: (1) When the intention of gait adjustment occurs, the increase of HbO concentration in the SMA indicates the initial stage of gait adjustment will increase the motion cognitive needs of the brain.(2) The right brain area, especially the Right-PMC, is responsible for step adjustment. While the left brain area, especially the Left-PFC, meets the additional nerve needs of speed adjustment. The increase in gait parameters promotes more blood oxygen metabolism in the Left-PFC to meet the needs of enhanced nerve activity. The preliminary findings of this study can lay an important theoretical foundation for the realization of gait control based on fNIRS-BCI technology.

DEVELOPMENT OF A SYSTEM FOR HUMAN GAIT ANALYSIS USING KINECT V2

2019 ◽  
Author(s):  
Ítalo Rodrigues ◽  
Jadiane Dionisio ◽  
Rogério Sales Gonçalves
Keyword(s):  
Gait Analysis ◽  
Human Gait ◽  
Kinect V2 ◽  
Human Gait Analysis
Sign in / Sign up

Export Citation Format

Share Document