Raw Data: Factors limiting sensitivity to binocular disparity in human vision

Data from 53 subjects in three experiments. Experiment 1 (53 subjects): Four-alternative forced choice task where subjects viewed a field of black and white dots. They located which location (of four) contained a wedge-shaped target in either crossed or uncrossed disparity. Stimuli were presented for an unlimited duration. Experiment 2 (18 subjects): As above but with stimulus duration reduced to 250 ms. Also, stimuli now contained disparity noise (standard deviation of 0 to 512 arc seconds) applied to each dot. This allowed us to measure noise-masking functions. Experiment 3 (11 subjects): Control experiment with duration further reduced to 50 ms.

本数据集包含3项实验共计53名被试的实验数据。实验1（53名被试）：采用四择一迫选任务（four-alternative forced choice task），被试观看一片黑白点阵视野，需从四个位置中定位出带有楔形目标的位置，该目标呈现交叉视差（crossed disparity）或非交叉视差（uncrossed disparity），刺激呈现时长无限制。实验2（18名被试）：实验范式与实验1一致，但将刺激时长缩短至250毫秒；此外，本次实验为每个点阵点施加了视差噪声（disparity noise），其标准差范围为0至512角秒（arc seconds），借此可测量噪声掩蔽函数（noise-masking functions）。实验3（11名被试）：为对照实验，将刺激时长进一步缩短至50毫秒。