A recency effect in sound localization?
A recency effect in sound localization?
复制标题
DOI：
10.1121/1.3124776
复制
发表时间：
2009-06
期刊：
影响因子：
--
通讯作者：
G. C. Stecker;E. Hafter
中科院分区：
文献类型：
--
作者：
G. C. Stecker;E. Hafter
在一个自由场指向的任务，听众本地化列车的4-32空间分布的Gabor点击（窄带脉冲）集中在4-kHz的载波频率和重复的间隔为5毫秒。多元回归系数估计的感知“重量”施加到每个点击在列车位置判断。以这种方式获得的时间加权函数表现出两个关键特征：起始主导，如在初始点击上的高权重所证明的，以及晚到声音的“增权”，如在每个点击训练的持续时间内逐渐增加的权重所证明的。在所有测试的点击训练持续时间，尽管随机变化的持续时间从审判到审判，最大的发作后的重量一致地发现点击或附近的偏移。结果意味着一个特殊的重要性，晚到的声音，而不是前馈恢复从发病优势，并与时间整合的近因效应大致一致。
In a free-field pointing task, listeners localized trains of 4-32 spatially distributed Gabor clicks (narrowband impulses) centered at 4-kHz carrier frequency and repeating at an interval of 5 ms. Multiple regression coefficients estimated the perceptual "weight" applied to each click in a train during location judgments. Temporal weighting functions obtained in this way exhibited two key features: onset dominance, as evidenced by high weight on the initial click, and "upweighting" of late-arriving sound, as evidenced by weights that gradually increased over the duration of each click-train. Across all tested click-train durations, and despite randomly varying the durations from trial to trial, the greatest post-onset weights were consistently found for clicks at or near the offset. The results imply a special importance of late-arriving sound rather than feedforward recovery from onset dominance, and are broadly consistent with recency effects resulting from temporal integration.