Magnuson Curt E, Robin Donald A, Wright David L
Human Performance Laboratories, Texas A&M University, College Station 77843-4243, USA.
J Mot Behav. 2008 Nov;40(6):532-44. doi: 10.3200/JMBR.40.6.532-544.
Motor programming at the self-select paradigm was adopted in 2 experiments to examine the processing demands of independent processes. One process (INT) is responsible for organizing the internal features of the individual elements in a movement (e.g., response duration). The 2nd process (SEQ) is responsible for placing the elements into the proper serial order before execution. Participants in Experiment 1 performed tasks involving 1 key press or sequences of 4 key presses of the same duration. Implementing INT and SEQ was more time consuming for key-pressing sequences than for single key-press tasks. Experiment 2 examined whether the INT costs resulting from the increase in sequence length observed in Experiment 1 resulted from independent planning of each sequence element or via a separate "multiplier" process that handled repetitions of elements of the same duration. Findings from Experiment 2, in which participants performed single key presses or double or triple key sequences of the same duration, suggested that INT is involved with the independent organization of each element contained in the sequence. Researchers offer an elaboration of the 2-process account of motor programming to incorporate the present findings and the findings from other recent sequence-learning research.
在两项实验中采用了自选择范式下的运动编程，以检验独立过程的加工需求。一个过程（INT）负责组织运动中各个元素的内部特征（例如，反应持续时间）。第二个过程（SEQ）负责在执行前将这些元素按适当的顺序排列。实验1的参与者执行涉及单次按键或相同持续时间的4次按键序列的任务。对于按键序列，实施INT和SEQ比单次按键任务更耗时。实验2考察了实验1中观察到的序列长度增加所导致的INT成本，是源于对每个序列元素的独立规划，还是通过一个单独的“乘数”过程来处理相同持续时间元素的重复。实验2的结果表明，参与者执行相同持续时间的单次按键、双次或三次按键序列，这表明INT参与了序列中每个元素的独立组织。研究人员对运动编程的双过程解释进行了阐述，以纳入当前的研究结果以及其他近期序列学习研究的结果。
