Short- and long-range processes in visual apparent movement
Short- and long-range processes in visual apparent movement
复制标题
视觉表观运动的短程和长程过程
DOI：
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发表时间：
1983
期刊：
影响因子：
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通讯作者：
C. Bundesen
中科院分区：
文献类型：
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作者：
A. Larsen;J. Farrell;C. Bundesen
以0.1 ° ~ 5 °的视角间隔的点刺激和观察距离作为参数，测量了感知β表观运动所需的最小刺激起始时间。对于每个观看距离，β移动的阈值是视角的单调函数，在小于0.25·的角度上具有强线性增加（短程函数），并且在大于1.5·的角度上具有弱得多的线性增加（长程函数）。短距离和长距离函数受观察距离增加的影响不同：长距离函数的斜率增加，但外推的零截距不变;短距离函数的截距改变，但斜率不变。这些结果为视觉运动知觉中的短距离和长距离过程提供了强有力的证据。
SummaryThe minimum stimulus-onset asynchrony required for perception of beta apparent movement was measured with point stimuli separated by visual angles ranging from about 0.1· to 5· and viewing distance as a parameter. For each viewing distance, the threshold for beta movement was a monotonic function of the visual angle with a strong linear increase over angles less than 0.25· (short-range function) and a much weaker linear increase over angles greater than 1.5· (long-range). The short- and long-range functions were differentially affected by increase in viewing distance: the long-range function increased in slope, but the extrapolated zero-intercept was constant; the short-range function changed in intercept, but not in slope. The results provide strong evidence for separate short- and long-range processes in visual motion perception.