Acquisition of Effector-Specific and Effector-Independent Components of Sequencing Skill

作者：Berner Michael P^*; Hoffmann Joachim

来源：Journal of Motor Behavior, 2009, 41(1): 30-44.

DOI：10.1080/00222895.2009.10125918

• effector proficiency
• effector specificity
• intermanual transfer
• sequence learning
• skill acquisition

In a serial reaction time task, participants practiced a repeating sequence with 1 hand. In interleaved blocks, they responded to random sequences with the other hand. Experiment 1 was composed of 5 sessions, each consisting of 30 blocks. Intermanual transfer, reflecting a hand-independent component of sequence knowledge, increased across session. A smaller but significant, nontransferable, and hand-specific component was evident in each session and did not increase with practice. Experiment 2 comprised only I session. Uninterrupted practice (no interleaved random blocks) improved hand-independent sequence learning in comparison with interrupted practice (as implemented in Experiment I), whereas hand-specific sequence learning was unaffected by this between-subjects manipulation. These findings suggest separate mechanisms 1 or effector-independent sequence learning and effector-specific acquisition of optimized response coarticulation.

• 出版日期2009-1