Sleimen-Malkoun Rita, Devillers-Réolon Louise, Temprado Jean-Jacques
Aix-Marseille University, CNRS, ISM, 163 av. de Luminy, 13288 Marseille cedex 09, France.
Heliyon. 2023 May 9;9(5):e16089. doi: 10.1016/j.heliyon.2023.e16089. eCollection 2023 May.
This study aimed at demonstrating the intentional modulation of bimanual coordination dynamics at transition frequency and determining whether it is associated with perceptual and/or motor inhibition capacities. Healthy adults (N = 29) performed in a random order: i) bimanual anti-phase (AP) movements at the maximal individual transition frequency, with the instruction to either let go, or intentionally maintain the initial movement pattern and oppose to the spontaneous transition to in-phase (IP) movements, and ii) The Motor and Perceptual Inhibition Test, giving separate scores for perceptual and motor inhibition. Results showed that in the intentional condition participants were able to delay (more movement cycles before the transition) and suppress (more trials without transition) the spontaneous transition from AP to IP. A statistically significant, though weak, correlation was found between motor performance and perceptual inhibition scores. We interpreted our findings as an indicator of the presence of an inhibitory mechanism underlying intentional dynamics that is partially associated to perceptual inhibition in healthy adults. This could have implications in populations with compromised inhibitory capacities, which might entail motor repercussions, and suggests the possibility of using bimanual coordination as means to stimulate both cognitive and motor capacities.
本研究旨在证明在过渡频率下对双手协调动力学的有意调节，并确定其是否与感知和/或运动抑制能力相关。29名健康成年人按随机顺序进行：i）以个体最大过渡频率进行双手反相（AP）运动，指令为要么放手，要么有意保持初始运动模式并抵制自发转变为同相（IP）运动；ii）进行运动和感知抑制测试，分别给出感知和运动抑制的分数。结果表明，在有意条件下，参与者能够延迟（过渡前更多的运动周期）并抑制（更多无过渡的试验）从AP到IP的自发转变。在运动表现和感知抑制分数之间发现了具有统计学意义但较弱的相关性。我们将研究结果解释为健康成年人中有意动力学背后存在抑制机制的一个指标，该机制部分与感知抑制相关。这可能对抑制能力受损的人群有影响，这可能会带来运动方面的影响，并表明利用双手协调作为刺激认知和运动能力手段的可能性。
