Movement Strategy Moderates the Effect of Spatially Congruent Cues on the Stability of Rhythmic Bimanual Finger Movements.

IF 3.1 3区 医学 Q2 NEUROSCIENCES Journal of Cognitive Neuroscience Pub Date : 2024-11-01 DOI:10.1162/jocn_a_02268
Ronan Denyer, Lara A Boyd
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Abstract

Spatially congruent cues increase the speed of bimanual reach decisions compared with abstract symbolic cues, particularly for asymmetric reaches. Asymmetric rhythmic bimanual movements are less stable than symmetric rhythmic movements, but it is not well understood if spatially congruent cues similarly increase the stability of asymmetric rhythmic bimanual movements. To address this question, in Experiment 1, participants performed symmetric and asymmetric bimanual rhythmic finger tapping movements at different movement frequencies in time with flickering spatially congruent and abstract symbolic stimuli. As expected, symmetric movements were more stable. Spatially congruent cues similarly increased the stability of symmetric and asymmetric movements compared with abstract symbolic cues. The benefits of spatial congruence and movement symmetry were restricted to high movement frequencies (>2 Hz). To better understand if the emergence of these effects at high movement frequencies was driven by a change in movement strategy, in Experiment 2, video of the hands was concurrently recorded during task performance. Markerless motion tracking software revealed that participants switched from discontinuous to continuous movement strategies with increasing movement frequency. Because discontinuous and continuous movements are thought to be controlled by distinct neurocognitive systems, this might explain why the beneficial effects of spatial congruence and response symmetry emerged only at high movement frequencies. Overall, results from the current study indicate that the perceptual quality of the stimulus use to cue movement frequency can have powerful effects on the stability of rhythmic bimanual movements, but that these effects may depend on whether discontinuous or continuous movement strategies are selected.

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运动策略可调节空间一致性线索对有节奏双指运动稳定性的影响
与抽象的符号线索相比,空间一致的线索能提高双臂伸展决策的速度,尤其是在非对称伸展的情况下。非对称节奏双臂动作的稳定性低于对称节奏动作,但空间一致性线索是否同样能提高非对称节奏双臂动作的稳定性,目前还不十分清楚。为了解决这个问题,在实验 1 中,受试者在闪烁的空间一致和抽象符号刺激下,以不同的运动频率进行对称和不对称的双指节奏性敲击运动。不出所料,对称动作更加稳定。与抽象符号线索相比,空间一致性线索同样提高了对称和不对称动作的稳定性。空间一致性和运动对称性的益处仅限于高运动频率(>2 Hz)。为了更好地了解这些效应在高运动频率下的出现是否是由运动策略的改变所驱动的,在实验 2 中,我们同时记录了任务执行过程中双手的视频。无标记运动跟踪软件显示,随着运动频率的增加,参与者从非连续运动策略转换为连续运动策略。由于不连续运动和连续运动被认为是由不同的神经认知系统控制的,这也许可以解释为什么空间一致性和反应对称性的有益效果只有在高运动频率时才会出现。总之,本研究的结果表明,用于提示运动频率的刺激物的知觉质量会对有节奏的双足运动的稳定性产生强大的影响,但这些影响可能取决于选择的是非连续运动策略还是连续运动策略。
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来源期刊
Journal of Cognitive Neuroscience
Journal of Cognitive Neuroscience 医学-神经科学
CiteScore
5.30
自引率
3.10%
发文量
151
审稿时长
3-8 weeks
期刊介绍: Journal of Cognitive Neuroscience investigates brain–behavior interaction and promotes lively interchange among the mind sciences.
期刊最新文献
Attentional Refreshing in Working Memory and Its Interplay with Long-term Memory: A Behavioral and EEG Study. Experimental Manipulation of the Bilateral Posterior Parietal Cortex Strengthens Associative Memory in Healthy Participants: A Continuous Theta-burst Stimulation. Similarity Distractors Increase the Burden of Chinese Character Selection and Updating in Working Memory. Theta Transcranial Alternating Current Stimulation Is Not Effective in Improving Working Memory Performance. Movement Strategy Moderates the Effect of Spatially Congruent Cues on the Stability of Rhythmic Bimanual Finger Movements.
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