Tactile angle discriminability improvement: roles of training time intervals and different types of training tasks
Tactile angle discriminability improvement: roles of training time intervals and different types of training tasks
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DOI：
10.1152/jn.00161.2019
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发表时间：
2019-08
影响因子：
2.5
通讯作者：
Wen Wang;Jiajia Yang;Yinghua Yu;Qiong Wu;Jiabin Yu;Satoshi Takahashi;Y. Ejima;Jinglong Wu
中科院分区：
文献类型：
--
作者：
Wen Wang;Jiajia Yang;Yinghua Yu;Qiong Wu;Jiabin Yu;Satoshi Takahashi;Y. Ejima;Jinglong Wu
知觉学习并不局限于视觉和触觉等感觉模态，它在一次训练过程中以及不同训练阶段之间都会出现，并伴随着大脑皮层神经连接的重塑。然而，对于不同训练阶段之间的知觉学习，我们所知有限。尽管触觉研究已经关注到阶段间的学习效应，但很少有研究提出一些基本问题，比如训练阶段之间的时间间隔是否会影响触觉知觉学习以及在不同触觉任务中的泛化。我们研究了不同训练时间间隔对连续进行触觉角度辨别（AD）任务和触觉方向辨别（OD）任务训练时触觉角度辨别能力的影响。结果表明，在短间隔训练组中，AD任务表现 在学习初期显著提高，后期则几乎趋于平稳；而在长间隔训练组中，显著提高有所延迟，后期也几乎趋于平稳；此外，OD任务表现的提高会导致AD任务表现的提高。这些发现表明，训练时间间隔会影响学习的初期阶段，但不影响后期阶段，并且在不同类型的触觉任务之间存在泛化现象。
《新颖与值得关注》
知觉学习是复杂认知过程的重要基础，是对感知技能的更好学习。我们证明训练时间间隔会影响学习的初期阶段，但不影响后期阶段。此外，触觉方向辨别训练任务也能提高触觉角度辨别能力。这些发现可能会拓展阶段间学习的特点，并有助于理解不同触觉任务之间泛化的机制。
Perceptual learning, which is not limited to sensory modalities such as vision and touch, emerges within a training session and between training sessions and is accompanied by the remodeling of neural connections in the cortex. However, limited knowledge exists regarding perceptual learning between training sessions. Although tactile studies have paid attention to between-session learning effects, there have been few studies asking fundamental questions regarding whether the time interval between training sessions affects tactile perceptual learning and generalization across tactile tasks. We investigated the effects of different training time intervals on the consecutive performance of a tactile angle discrimination (AD) task and a tactile orientation discrimination (OD) task training on tactile angle discriminability. The results indicated that in the short-interval training group, AD task performance significantly improved in the early stage of learning and nearly plateaued in the later stage, whereas in the long-interval training group, significant improvement was delayed and then also nearly plateaued in the later stage; additionally, improved OD task performance resulted in improved AD task performance. These findings suggest that training time interval affects the early stage of learning but not the later stage and that generalization occurs between different types of tactile tasks. NEW & NOTEWORTHY Perceptual learning, which constitutes important foundations of complicated cognitive processes, is learning better perception skills. We demonstrate that training time interval can affect the early stage of learning but not the later stage. Moreover, a tactile orientation discrimination training task can also improve tactile angle discrimination performance. These findings may expand the characteristics of between-session learning and help understand the mechanism of the generalization across tactile tasks.