von Grünau M, Dubé S
Department of Psychology, Concordia University, Montréal, Québec, Canada.
Spat Vis. 1992;6(4):303-14. doi: 10.1163/156856892x00145.
A new method, using phase-reversing sinusoidal gratings to cancel perceived motion, was developed to measure the motion aftereffect (MAE). This technique was used to show the existence of a remote MAE, i.e. an MAE in areas that were not directly stimulated during adaptation. In several experiments, this remote MAE was compared to the local MAE. The remote effect was generally weaker and of shorter duration. It showed no directional tuning within the investigated range, as compared to a tuning of +/- 60 deg of the local MAE. There was no adaptation effect to the component gratings of a plaid, indicating that the plaid was treated as a coherent pattern. The local MAE showed clear spatial frequency tuning, whereas the remote MAE varied little with spatial frequency difference, although there was a tendency towards frequencies lower than the adaptation frequency. The possibility is considered that both local and remote MAEs are generated in extrastriate areas.
一种利用相位反转正弦光栅消除感知运动的新方法被开发出来用于测量运动后效（MAE）。该技术被用于证明远距离运动后效的存在，即在适应过程中未直接受到刺激的区域出现的运动后效。在几个实验中，将这种远距离运动后效与局部运动后效进行了比较。远距离效应通常较弱且持续时间较短。与局部运动后效的±60度调谐相比，在研究范围内它没有显示出方向调谐。对于方格图案的组成光栅没有适应效应，这表明方格图案被视为一个连贯的图案。局部运动后效显示出明显的空间频率调谐，而远距离运动后效随空间频率差异变化不大，尽管有向低于适应频率的频率发展的趋势。人们认为局部和远距离运动后效都可能在纹外区域产生。
