Individually different weighting of multiple processes underlies effects of metacontrast masking
Individually different weighting of multiple processes underlies effects of metacontrast masking
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DOI：
10.1016/j.concog.2016.03.006
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发表时间：
2016-05-01
影响因子：
2.4
通讯作者：
Mattler, Uwe
中科院分区：
文献类型：
--
作者：
Albrecht, Thorsten;Mattler, Uwe
元对比掩蔽发生在掩蔽在空间上接近目标刺激时。目标可见性随目标和掩蔽之间的刺激起始时间（SOA）以不同的方式变化，导致不同的掩蔽函数，并有相应的现象学报告。我们使用个体差异来确定元对比掩蔽的基础过程。我们评估个人掩蔽功能在掩蔽目标歧视任务，使用不同的掩蔽条件和应用因子分析技术的措施的敏感性。结果产生了两个潜在变量，（1）分别有助于短期和长期SOA的性能，（2）与特定的刺激特征，（3）与特定的主观感知差异相关。我们认为，每个潜在变量反映了一个特定的过程。另外两个流程可能分别对短SOA和长SOA的性能有所贡献。元对比掩蔽中的区分性能来自于两到四个过程的单独不同权重，每个过程都有助于特定的主观感知。(c)2016 Elsevier Inc. All rights reserved.
Metacontrast masking occurs when a mask follows a target stimulus in close spatial proximity. Target visibility varies with stimulus onset asynchrony (SOA) between target and mask in individually different ways leading to different masking functions with corresponding phenomenological reports. We used individual differences to determine the processes that underlie metacontrast masking. We assessed individual masking functions in a masked target discrimination task using different masking conditions and applied factor analytical techniques on measures of sensitivity. Results yielded two latent variables that (1) contribute to performance with short and long SOA, respectively, (2) relate to specific stimulus features, and (3) differentially correlate with specific subjective percepts. We propose that each latent variable reflects a specific process. Two additional processes may contribute to performance with short and long SOAs, respectively. Discrimination performance in metacontrast masking results from individually different weightings of two to four processes, each of which contributes to specific subjective percepts. (c) 2016 Elsevier Inc. All rights reserved.