Article
Neurosciences
Celia Ruffino, Dylan Rannaud Monany, Charalambos Papaxanthis, Pauline M. Hilt, Jeremie Gaveau, Florent Lebon
Summary: Practice and motor imagery practice have positive effects on the execution of arm movements, but they differ in their impact on movement smoothness. Practice involves online corrections through sensory feedback integration, while motor imagery practice does not possess this ability.
Article
Psychology, Multidisciplinary
Melissa Lajtos, Luis Alberto Barradas-Chacon, Selina Christin Wriessnegger
Summary: This study investigates the influence of handedness on brain activation during the processes of imagining and executing simple hand movements. The results show that both left-handed and right-handed individuals exhibit activation over sensorimotor areas. However, the right-handed group tends to display more bilateral patterns than the left-handed group, which contradicts previous findings. Additionally, there is a stronger activation during motor imagery than during motor execution in both groups.
FRONTIERS IN PSYCHOLOGY
(2023)
Article
Neurosciences
Dongrong Lai, Zijun Wan, Jiafan Lin, Li Pan, Feixiao Ren, Junming Zhu, Jianmin Zhang, Yueming Wang, Yaoyao Hao, Kedi Xu
Summary: In this study, neural signals from a paralyzed individual's left motor cortex were recorded during unimanual and bimanual motor imagery tasks to investigate how the human brain coordinates bimanual movements. The results showed that while there was a similar preference for each arm during unimanual movements, the preference for the contralateral arm increased to 71.8% during bimanual movements, indicating contralateral lateralization. It was also observed that there was a decorrelation process for each arm's representation across the unimanual and bimanual tasks. These findings contribute to our understanding of bimanual coordination and the development of advanced bimanual brain-computer interfaces.
FRONTIERS IN NEUROSCIENCE
(2023)
Article
Multidisciplinary Sciences
Ursula Debarnot, Aurore. A. Perrault, Virginie Sterpenich, Guillaume Legendre, Chieko Huber, Aymeric Guillot, Sophie Schwartz
Summary: The study found that using MI treatment during arm immobilization had beneficial effects on sensorimotor representation of hands, cortical excitability in M1, and sleep features including sleep spindles. This supports that implementing MI during immobilization may limit deleterious effects of limb disuse.
SCIENTIFIC REPORTS
(2021)
Article
Neurosciences
Kathryn J. M. Lambert, Yvonne Y. Chen, Christopher Donoff, Jonah Elke, Christopher R. Madan, Anthony Singhal
Summary: The mental representations of our bodies influence how we interact with our surroundings. Through motor imagery, we can observe these mental representations using scalp EEG recordings. Motor imagery can be characterized by visual or kinaesthetic modality, and these modalities can be engaged separately or together. The study found that individuals imagine movement differently depending on whether it involves their dominant or non-dominant hand, and left-handers may be more flexible in their motor imagery strategies.
EUROPEAN JOURNAL OF NEUROSCIENCE
(2023)
Article
Neurosciences
Monica Crotti, Karl Koschutnig, Selina Christin Wriessnegger
Summary: This study investigates the brain activity and differences between right-handed and left-handed individuals during motor imagery and motor execution tasks. The results reveal significant differences in cortical and subcortical levels between the two groups. Additionally, only right-handed individuals show the involvement of the posterior cerebellum during the imagery task.
JOURNAL OF NEUROSCIENCE RESEARCH
(2022)
Article
Engineering, Biomedical
Luka Batistic, Jonatan Lerga, Isidora Stankovic
Summary: This paper compares different time-frequency representations (TFR) and their entropies for motor imagery control signals in EEG data. The results show that using TFR-based entropy features can achieve higher accuracies (up to 99.87%) compared to regular amplitude features (up to 85.91%), indicating an improvement in the ability to detect motor imagery.
BIOMEDICAL ENGINEERING ONLINE
(2023)
Article
Neurosciences
Jiafan Lin, Dongrong Lai, Zijun Wan, Linqing Feng, Junming Zhu, Jianmin Zhang, Yueming Wang, Kedi Xu
Summary: In this study, the representation and decoding of different laterality and regions arm motor imagery in unilateral motor cortex were examined using local field potentials (LFPs). The results showed that different tasks had significant differences in average energy and could be decoded using LFP signals. Moreover, the 135-300 Hz band signal had the highest decoding accuracy and the contralateral and bilateral signals had more similar power activation patterns and larger signal correlation than contralateral and ipsilateral signals, bilateral and ipsilateral signals.
FRONTIERS IN HUMAN NEUROSCIENCE
(2023)
Article
Engineering, Biomedical
Qingsong Ai, Mengyuan Zhao, Kun Chen, Xuefei Zhao, Li Ma, Quan Liu
Summary: This paper presents an optimized neural network architecture for brain-computer interface technology. By removing artifact components, augmenting data, and using ensemble learning and transfer learning methods, the control of a robotic arm with multiple degrees of freedom is achieved. Experimental results demonstrate improved classification accuracy and model generality.
JOURNAL OF NEURAL ENGINEERING
(2022)
Article
Multidisciplinary Sciences
Saeka Tomatsu, Masaki Isoda
Summary: It has been found that macaque monkeys can exhibit social motor entrainment without human prompting. The repetitive arm movements for horizontal bar sliding were found to be phase coherent between two monkeys. This behavior is facilitated by real-time social exchanges and provides a behavioral platform to study the neural basis of potentially evolutionarily conserved mechanisms that support group cohesion.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Neurosciences
Eric Piveteau, Franck Di Rienzo, Olivier Bolliet, Aymeric Guillot
Summary: This study aimed to investigate the effects of embedded motor imagery (MI) practice on lower limb muscle strength and explore the transfer effects of MI on a different movement. The results showed that participants who engaged in MI of the back squat showed improved performance in the back squat exercise and there was evidence of transfer effects when MI targeted a different movement involving the lower limbs.
FRONTIERS IN NEUROSCIENCE
(2023)
Article
Multidisciplinary Sciences
K. Patel, D. Beaver, N. Gruber, G. Printezis, I Giannopulu
Summary: The study aimed to identify the neural substrate of whole-body motor imagery by recording the cortical activity of participants. The results revealed neural interconnections between forward and backward conditions, providing meaningful information about the neural dynamics of continuous whole-body motion.
SCIENTIFIC REPORTS
(2022)
Article
Neurosciences
Yuma Takenaka, Tomotaka Suzuki, Kenichi Sugawara
Summary: This study found that corticospinal excitability changes differently based on the duration of MI, and that real-time guides can make these excitability changes more pronounced. Therefore, using visual guides during MI may alter corticospinal excitability, which may differ from actual motor output.
EUROPEAN JOURNAL OF NEUROSCIENCE
(2021)
Review
Medicine, General & Internal
Alla Chepurova, Alexander Hramov, Semen Kurkin
Summary: This article summarizes the current state of scientific research in the field of motor imagery (MI) and motor execution (ME), constructs a brain map associated with different types of movements, discusses methods for assessing the quality of MI performance, reviews the use of transcranial magnetic stimulation (TMS) in MI research, and explores the main applications of MI and potential improvements for future research.
Article
Psychology, Multidisciplinary
Ming Chen, Chien-Huang Lin
Summary: The research explores the impact of the connection between visual stimuli and objects in consumers' hands on purchase intention. It shows that right-handed consumers have higher purchase intention for food when viewing an image with tableware on the right side, but the effect reverses under high motor resource load.
CURRENT PSYCHOLOGY
(2021)