de Heering Adélaïde, Maurer Daphne
McMaster University, Hamilton, Ontario, Canada.
Vision Res. 2013 Jun 28;86:107-14. doi: 10.1016/j.visres.2013.04.014. Epub 2013 May 3.
We investigated the efficacy of training adults to recognize full spectrum inverted faces presented with different viewpoints. To examine the role of different spatial frequencies in any learning, we also used high-pass filtered faces that preserved featural information and low-pass filtered faces that severely reduced that featural information. Although all groups got faster over the 2 days of training, there was more improvement in accuracy for the group exposed to full spectrum faces than in the two groups exposed to filtered faces, both of which improved more modestly and only when the same faces were shown on the 2 days of training. For the group exposed to the full spectrum range and, to a lesser extent, for those exposed to high frequency faces, training generalized to a new set of full spectrum faces of a different size in a different task, but did not lead to evidence of holistic processing or improved sensitivity to feature shape or spacing in inverted faces. Overall these results demonstrate that only 2h of practice in recognizing full-spectrum inverted faces presented from multiple points of view is sufficient to improve recognition of the trained faces and to generalize to novel instances. Perceptual learning also occurred for low and high frequency faces but to a smaller extent.
我们研究了训练成年人识别从不同视角呈现的全频谱倒置面孔的效果。为了检验不同空间频率在任何学习中的作用，我们还使用了保留特征信息的高通滤波面孔和严重减少该特征信息的低通滤波面孔。尽管所有组在两天的训练中速度都加快了，但接触全频谱面孔的组在准确性上的提高比接触滤波面孔的两组更大，后两组的提高较为有限，且仅当在两天训练中展示相同面孔时才有所提高。对于接触全频谱范围的组，以及在较小程度上对于接触高频面孔的组，训练能够推广到不同任务中一组不同大小的新的全频谱面孔，但未显示出整体加工的证据，也未提高对倒置面孔中特征形状或间距的敏感度。总体而言，这些结果表明，仅2小时练习识别从多个视角呈现的全频谱倒置面孔，就足以提高对训练面孔的识别能力，并推广到新的实例。低频和高频面孔也发生了知觉学习，但程度较小。
