Sathian K, Zangaladze A
Department of Neurology, Emory University School of Medicine, Atlanta, GA 30322, USA.
Exp Brain Res. 1998 Jan;118(1):131-4. doi: 10.1007/s002210050263.
We investigated intermanual transfer and long-term retention of practice-related perceptual learning in the domain of tactile hyperacuity. Subjects discriminated a row of three dots in which the central dot was offset laterally from a row without such offset. Performance at the right index fingerpad improved with practice. Practice effects transferred essentially completely to the left index fingerpad. When tested some months later at the right index fingerpad, long-term retention of learning was limited and further practice was required to stabilize discrimination thresholds. Intermanual transfer of tactile learning appears to be a general phenomenon, while long-term retention appears to be limited in hyperacuity tasks.
我们研究了触觉超敏领域中与练习相关的知觉学习的双手间迁移和长期保持情况。受试者辨别一排三个点，其中中间的点相对于没有这种偏移的一排点向侧面偏移。通过练习，右手食指指尖的表现有所改善。练习效果基本上完全迁移到了左手食指指尖。几个月后在右手食指指尖进行测试时，学习的长期保持受到限制，需要进一步练习才能稳定辨别阈值。触觉学习的双手间迁移似乎是一种普遍现象，而在超敏任务中，长期保持似乎是有限的。
