Buchanan John J, Park Inchon, Chen Jing, Wright David L, Mehta Ranjana K
Perception-Action Dynamics Lab, Department of Health and Kinesiology, Texas A&M University, 4243 TAMU, College Station, TX, 77843, USA.
NeuroErgonomics Lab, Department of Environmental and Occupational Health, Texas A&M University, 1266 TAMU, College Station, TX, 77843, USA.
Exp Brain Res. 2017 Jun;235(6):1909-1918. doi: 10.1007/s00221-016-4869-0. Epub 2017 Mar 18.
The influence of monitoring-pressure on the performance of anti-phase and in-phase bimanual coordination was examined. The two bimanual patterns were produced under no-monitoring and monitoring-pressure conditions at self-paced frequencies. Anti-phase coordination was always less stable than in-phase coordination, with or without monitoring. When performed under monitoring-pressure, the coordination patterns were performed with less variability in relative phase for both patterns across a range of self-paced movement frequencies compared to performance without monitoring. Thus, while monitoring-pressure did induce a behavioral change, it consisted of performance stabilization rather than degradation, a finding inconsistent with explicit-monitoring theory. However, the findings are consistent with the theory of coordination dynamics and studies that have revealed increased stability for the system's intrinsic dynamics as a result of attentional focus and intentional control.
研究了监测压力对反相和同相双手协调表现的影响。在无监测和监测压力条件下，以自定节奏频率产生两种双手模式。无论有无监测，反相协调始终比同相协调更不稳定。在监测压力下进行时，与无监测时相比，在一系列自定节奏运动频率下，两种模式的协调模式在相对相位上的变化更小。因此，虽然监测压力确实引起了行为变化，但这种变化是表现稳定而非退化，这一发现与明确监测理论不一致。然而，这些发现与协调动力学理论以及那些揭示由于注意力集中和有意控制而使系统内在动力学稳定性增加的研究是一致的。
