Section of Systems Neuroscience, Department of Psychiatry and Psychotherapy, Technische Universität Dresden, Dresden, Germany.
PLoS One. 2013;8(1):e54098. doi: 10.1371/journal.pone.0054098. Epub 2013 Jan 11.
The interference of magnitudes in different dimensions has been demonstrated previously, but the effect of training in one dimension on judgment of another has yet to be examined. The present study aimed to investigate the effect of training in numerosity judgment on judgment of duration. 32 participants took part in two sessions, 12 days apart, and had to judge which of two successive sets of items was presented longer. Half of the participants (training group) were additionally trained in 11 sessions to judge which one of the two successive sets of items was more numerous. It was found that the participants in the training group became more prone to the interference of numerosity on judging duration after training, when compared to the control group. Thus, being trained to more easily perceive the difference in number of items in the two sets affected the perception of duration. On the 3-month follow up session, no effect was found with 20 participants (n = 10 for each group). These findings indicate that the interference of magnitudes in different dimensions can be modulated by training. We discuss that this modulatory effect might be due to neural changes in shared brain regions between interfering magnitudes and/or is mediated by higher levels of perception.
先前已经证明了不同维度之间的大小干扰，但在一个维度上进行训练对另一个维度的判断的影响尚未被检验。本研究旨在调查数量判断训练对持续时间判断的影响。32 名参与者参加了两个间隔 12 天的会议，必须判断两个连续的项目集哪个呈现的时间更长。一半的参与者（训练组）另外接受了 11 次训练，以判断两个连续的项目集中哪一个数量更多。研究发现，与对照组相比，经过训练后，训练组的参与者更容易受到数量对判断持续时间的干扰。因此，经过训练更容易感知两个集合中项目数量的差异会影响对持续时间的感知。在 3 个月的随访会议上，20 名参与者（每组 n=10）没有发现效果。这些发现表明，不同维度之间的大小干扰可以通过训练来调节。我们讨论认为，这种调节效应可能是由于干扰大小和/或共享大脑区域的神经变化引起的，或者是由更高水平的感知介导的。
