The modulation of short and long-latency interhemispheric inhibition during bimanually coordinated movements

Jordan, Harry T; Schrafl-Altermatt, Miriam; Byblow, Winston D.; Stinear, Cathy M.

doi:10.1007/s00221-021-06074-z

Cited by 6 publications

(7 citation statements)

References 55 publications

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“…In our study, activation levels during bimanual pinch adjustments were similar for asymmetric and symmetric conditions indicating that dynamic modulations of BOLD signal in M1-HAND depend more on the general movement context (bimanual vs unimanual) rather than reflecting the specific pattern of force output. This fits well with previous TMS studies that also suggest that interhemispheric inhibition is modulated during bimanual movements but does not differ based on hand symmetry during bimanual tasks (Jordan, Schrafl-Altermatt, Byblow, & Stinear, 2021).…”

Section: Discussionsupporting

confidence: 92%

Dynamic involvement of premotor and supplementary motor areas in bimanual pinch force control

Karabanov

Chillemi

Madsen

et al. 2022

Preprint

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Many bimanual activities of daily living require quick shifts between symmetric and asymmetric motor output generated by the right and left hand. Bimanual motor control has been mostly studied during continuous repetitive tasks, while little research has been carried out in experimental settings requiring dynamic changes in motor output generated by both hands. Here, we performed functional magnetic resonance imaging (MRI) while healthy volunteers performed a visually guided, bimanual pinch force task. This enabled us to map functional activity and connectivity of premotor and motor areas during bimanual pinch force control in different task contexts, requiring mirror-symmetric or inverse-asymmetric changes in discrete pinch force exerted with the right and left hand. The bilateral dorsal premotor cortex showed increased activity and effective coupling to the ipsilateral supplementary motor area (SMA) in the inverse-asymmetric context compared to the mirror-symmetric context of bimanual pitch force control. Compared to unilateral pinches, all bimanual pinch force conditions were characterized by an increased level of activation in the bilateral primary motor hand area (M1-HAND) and stronger coupling from SMA to the ipsilateral M1-HAND. Task-related activity of a cluster in the left caudal SMA scaled positively with the degree of synchronous initiation of bilateral pinch force adjustments, irrespectively of the task context. The results suggest that the dorsal premotor cortex mediates increasing complexity of bimanual coordination by increasing coupling to the SMA-M1 network.

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Section: Discussionsupporting

confidence: 92%

Dynamic involvement of premotor and supplementary motor areas in bimanual pinch force control

Karabanov

Chillemi

Madsen

et al. 2022

Preprint

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“…Medical knowledge also supports the superiority of bimanual training in activating the primary motor cortex and the intact limb's supplementary motor [6]. Bimanual training has also demonstrated increased voluntary muscle contraction in impaired limbs when symmetrical movements are executed [7], thus promoting interhemispheric communication [8,9].…”

Section: Introductionmentioning

confidence: 79%

“…There is no force interaction between bilateral hands, leading to 𝑭 𝑣 𝑟 = 𝑭 𝑣 𝑙 = 0. Substituting that into (6), its mathematical model can be expressed as in (8).…”

Section: Bimanual Tasks With Force Field Modelingmentioning

confidence: 99%

“…where for coupled tasks 𝑆 1 =1, 𝑆 2 =0 as in (7), for uncoupled tasks 𝑆 1 =0, 𝑆 2 =0 as in (8), and for semi-coupled tasks 𝑆 1 =0, 𝑆 2 =1 as in (11). This is the final and normalized mathematical expression of the force fields between robotic handles for three different tasks (coupled, uncoupled and semi-coupled modes).…”

Section: Bimanual Tasks With Force Field Modelingmentioning

confidence: 99%

“…8 (a, b, d) present the experimental data from the selected subject in the uncoupled mode with the normal difficulty. Subplot (a) presents measured X-axis forces from the two three-axis sensors 𝐹 𝑚 𝑙 , 𝐹 𝑚 𝑟 , and the forces acting on the robotic handle 𝐹 ℎ 𝑙 , 𝐹 ℎ 𝑟 are derived as in (8) ) are shown in Fig. 8 (b, d), in which the subgraph presents the enlarged details during 26-30s.…”

Section: B Force Fields Of Three Basic Tasksmentioning

confidence: 99%

See 2 more Smart Citations

A Robotic System to Deliver Multiple Physically Bimanual Tasks via Varying Force Fields

Zhang

Sun

Liu

et al. 2022

IEEE Trans. Neural Syst. Rehabil. Eng.

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Individuals with physical limb disabilities are often restricted to perform activities of daily life (ADLs). While efficacy of bilateral training has been demonstrated in improving physical coordination of human limbs, few robots have been developed in simulating people's ADLs integrated with task-specific force field control. This study sought to develop a bilateral robot for better task rendering of general ADLs (gADLs), where gADL-consistent workspace is achieved by setting linear motors in series, and haptic rendering of multiple bimanual tasks (coupled, uncoupled and semi-coupled) is enabled by regulating force fields between robotic handles.Experiments were conducted with human users, and our results present a viable method of a single robotic system in simulating multiple physically bimanual tasks. In future, the proposed robotic system is expected to be serving as a coordination training device, and its clinical efficacy will be also investigated.

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A novel robotic system enabling multiple bilateral upper limb rehabilitation training via an admittance controller and force field

Jiao,

Liu,

Rashad

et al. 2024

Mechatronics

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The modulation of short and long-latency interhemispheric inhibition during bimanually coordinated movements

Cited by 6 publications

References 55 publications

Dynamic involvement of premotor and supplementary motor areas in bimanual pinch force control

Dynamic involvement of premotor and supplementary motor areas in bimanual pinch force control

A Robotic System to Deliver Multiple Physically Bimanual Tasks via Varying Force Fields

A novel robotic system enabling multiple bilateral upper limb rehabilitation training via an admittance controller and force field

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