Generalization of prism adaptation
Generalization of prism adaptation
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DOI：
10.1037/0096-1523.32.4.1006
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发表时间：
2006-08-01
影响因子：
2.1
通讯作者：
Wallace, Benjamin
中科院分区：
文献类型：
--
作者：
Redding, Gordon M.;Wallace, Benjamin
棱镜曝光产生2种自适应响应。重新校准是空间编码运动命令的普通战略重新映射，以快速减少性能误差。重新对齐是转换空间地图以使坐标系的原点相互对应的特殊过程。当空间不一致表明空间地图之间不对应时，就会发生重新对齐。在实验 1 中，从棱镜曝光到后曝光的重新校准后效应的概括取决于目标指向肢体姿势的相似性。重新调整后效应推广到涉及曝光的空间图。实验2中，对3个测试位置测量了2种后效，其中之一是暴露训练位置。重新校准后效应以非精细方式概括，而重新对准后效应以线性方式概括，使用更熟悉的棱镜适应范式复制 Bedford (1989, 1993a)。重新校准和重新对准需要区分它们对棱镜适应的相对贡献的方法。
Prism exposure produces 2 kinds of adaptive response. Recalibration is ordinary strategic remapping of spatially coded movement commands to rapidly reduce performance error. Realignment is the extraordinary process of transforming spatial maps to bring the origins of coordinate systems into correspondence. Realignment occurs when spatial discordance signals noncorrespondence between spatial maps. In Experiment 1, generalization of recalibration aftereffects from prism exposure to postexposure depended upon the similarity of target pointing limb postures. Realignment aftereffects generalized to the spatial maps involved in exposure. In Experiment 2, the 2 kinds of aftereffects were measured for 3 test positions, one of which was the exposure training position. Recalibration aftereffects generalized nonfinearly, while realignment aftereffects generalized linearly, replicating Bedford (1989, 1993a) using a more familiar prism adaptation paradigm. Recalibration and realignment require methods for distinguishing their relative contribution to prism adaptation.