1
|
Ji H, Chen Z, Qiao Y, Yan J, Chen G, Luo Q, Cui L, Zong Y, Xie Q, Niu CM. Hemodynamic activity is not parsimoniously tuned to index-of-difficulty in movement with dual requirements on speed-accuracy. Front Hum Neurosci 2024; 18:1398601. [PMID: 39045507 PMCID: PMC11263286 DOI: 10.3389/fnhum.2024.1398601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2024] [Accepted: 06/24/2024] [Indexed: 07/25/2024] Open
Abstract
Background Reaching movements are crucial for daily living and rehabilitation, for which Fitts' Law describes a speed-accuracy trade-off that movement time increases with task difficulty. This study aims to investigate whether cortical activation in motor-related areas is directly linked to task difficulty as defined by Fitts' Law. Understanding this relationship provides a physiological basis for parameter selection in therapeutic exercises. Methods Sixteen healthy subjects performed 2D reaching movements using a rehabilitation robot, with their cortical responses detected using functional near-infrared spectroscopy (fNIRS). Task difficulty was manipulated by varying target size and distance, resulting in 3 levels of index-of-difficulty (ID). Kinematic signals were recorded alongside cortical activity to assess the relationship among movement time, task difficulty, and cortical activation. Results Our results showed that movement time increased with ID by 0.2974s/bit across all subjects (conditional r2 = 0.6434, p < 0.0001), and all subjects showed individual trends conforming Fitts' Law (all p < 0.001). Neither activation in BA4 nor in BA6 showed a significant correlation with ID (p > 0.05), while both the target size and distance, as well as the interaction between them, showed a significant relationship with BA4 or BA6 activation (all p < 0.05). Conclusion This study found that although kinematic measures supported Fitts' Law, cortical activity in motor-related areas during reaching movements did not correlate directly with task difficulty as defined by Fitts' Law. Additional factors such as muscle activation may call for different cortical control even when difficulty was identical.
Collapse
Affiliation(s)
- Haibiao Ji
- Department of Rehabilitation Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Zhi Chen
- Department of Rehabilitation Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yongjun Qiao
- Department of Rehabilitation Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jin Yan
- Department of Rehabilitation Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Gaoxiang Chen
- Department of Rehabilitation Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qi Luo
- School of Automotive and Mechanical Engineering, Changsha University of Science and Technology, Changsha, China
| | - Lijun Cui
- Department of Rehabilitation Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ya Zong
- Department of Rehabilitation Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qing Xie
- Department of Rehabilitation Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Chuanxin M. Niu
- Department of Rehabilitation Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| |
Collapse
|
2
|
Błaszczyszyn M, Szczęsna A, Konieczny M, Pakosz P, Balko S, Borysiuk Z. Quantitative Assessment of Upper Limb Movement in Post-Stroke Adults for Identification of Sensitive Measures in Reaching and Lifting Activities. J Clin Med 2023; 12:jcm12093333. [PMID: 37176773 PMCID: PMC10179564 DOI: 10.3390/jcm12093333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 04/27/2023] [Accepted: 05/05/2023] [Indexed: 05/15/2023] Open
Abstract
BACKGROUND The assumption of this work is the achievement of objective results of the movement structure, which forms the basis for in-depth analysis and, consequently, for determining the upper limb movements that are most affected by stroke compared to healthy people. METHODS An analysis of relevant and systematically identified features of upper limb movement in post-stroke adults is presented based on scalable hypothesis tests. The basic features were calculated using movements defined by the x, y, and z coordinates (i.e., 3D trajectory time series) and compared to the results of post-stroke patients with healthy controls of similar age. RESULTS After automatic feature selection, out of the 1004 common features of upper limb movement, the most differentiated were the upper arm movements in reaching kinematics. In terms of movement type, movements in the frontal plane (shoulder abduction and adduction) were the most sensitive to changes. The largest number of discriminating features was determined on the basis of acceleration time series. CONCLUSIONS In the 3D assessment of functional activities of the upper limb, the upper arm turned out to be the most differentiated body segment, especially during abduction and adduction movements. The results indicate a special need to pay attention to abduction and adduction movements to improve the activities of daily living of the upper limbs after a stroke.
Collapse
Affiliation(s)
- Monika Błaszczyszyn
- Department of Physical Education and Sport, Faculty of Physical Education and Physiotherapy, Opole University of Technology, Prószkowska 76, 45-758 Opole, Poland
| | - Agnieszka Szczęsna
- Department of Computer Graphics, Vision and Digital Systems, Faculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, Poland
| | - Mariusz Konieczny
- Department of Physical Education and Sport, Faculty of Physical Education and Physiotherapy, Opole University of Technology, Prószkowska 76, 45-758 Opole, Poland
| | - Paweł Pakosz
- Department of Physical Education and Sport, Faculty of Physical Education and Physiotherapy, Opole University of Technology, Prószkowska 76, 45-758 Opole, Poland
| | - Stefan Balko
- Department of Physical Education and Sport, Faculty of Education, J.E. Purkyne University, 400 96 Usti nad Labem, Czech Republic
| | - Zbigniew Borysiuk
- Department of Physical Education and Sport, Faculty of Physical Education and Physiotherapy, Opole University of Technology, Prószkowska 76, 45-758 Opole, Poland
| |
Collapse
|
3
|
Konieczny M, Domaszewski P, Skorupska E, Borysiuk Z, Słomka KJ. Age-Related Differences in Intermuscular Coherence EMG-EMG of Ankle Joint Antagonist Muscle Activity during Maximal Leaning. SENSORS (BASEL, SWITZERLAND) 2022; 22:7527. [PMID: 36236626 PMCID: PMC9573255 DOI: 10.3390/s22197527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/25/2022] [Accepted: 09/28/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Intermuscular synchronization is one of the fundamental aspects of maintaining a stable posture and is of great importance in the aging process. This study aimed to assess muscle synchronization and postural stabilizer asymmetry during quiet standing and the limits of stability using wavelet analysis. Intermuscular synchrony and antagonistic sEMG-sEMG (surface electromyography) coherence asymmetry were evaluated in the tibialis anterior and soleus muscles. METHODS The study involved 20 elderly (aged 65 ± 3.6) and 20 young (aged 21 ± 1.3) subjects. The task was to perform a maximum forward bend in a standing position. The prone test was divided into three phases: quiet standing (10 s), dynamic learning, and maintenance of maximum leaning (20 s). Wavelet analysis of coherence was performed in the delta and beta bands. RESULTS Young subjects modulated interface coherences to a greater extent in the beta band. Analysis of postural stability during standing tasks showed that only the parameter R2b (the distance between the maximal and minimal position central of pressure), as an indicator for assessing the practical limits of stability, was found to be significantly associated with differences in aging. CONCLUSION The results showed differences in the beta and delta band oscillations between young and older subjects in a postural task involving standing quietly and leaning forward.
Collapse
Affiliation(s)
- Mariusz Konieczny
- Faculty of Physical Education and Physiotherapy, Opole University of Technology, 45-068 Opole, Poland
| | - Przemysław Domaszewski
- Department of Health Sciences, Institute of Health Sciences, University of Opole, 45-060 Opole, Poland
| | - Elżbieta Skorupska
- Department of Physiotherapy, Poznan University of Medical Sciences, 61-701 Poznan, Poland
| | - Zbigniew Borysiuk
- Faculty of Physical Education and Physiotherapy, Opole University of Technology, 45-068 Opole, Poland
| | - Kajetan J. Słomka
- Institute of Sport Sciences, Academy of Physical Education, 40-065 Katowice, Poland
| |
Collapse
|