Binocular non-stereoscopic cues in Randot and Butterfly stereotests

Version 2: is only a simplified and cleaned version of the same data. This is a set of data collected in Geneva and Berkeley for different samples of participants, either neurotypic or amblyopic. We have measured stereoacuity using different stereotest: -the Butterfly Shape and circles in 3 viewing conditions: rotated 90 degrees, right-side up or upside-down -the Randot Shapes and circles in 3 viewing conditions: rotated 90 degrees, right-side up or upside-down, monocularly patched -psychophysical stereotests with no cues to depth that would not be stereoscopic (using single stimulus method with lines or constant stimulus method with dynamic random-dot stereograms) The goal was to test whether monocular cues were present to pass the clinical tests (in which case the monocularly patched viewing condition would yield non-random results), and most importantly whether binocular non-stereoscopic cues could be used to pass the tests (in which case the rotated 90-degrees viewing condition would yield non-random results), and then to see whether we could predict with accuracy stereoblindness in the psychophysical stereotests from the clincal stereotests (Randot and Butterfly). We found no monocular cues in the Randot, binocular non-stereoscopic cues in the two clinical stereotests and that they could not be used to reliably predict stereoblindness or stereo-impairment in the psychophysical stereotest.版本2仅为同批次数据的简化清洗版本。本数据集采集自日内瓦与伯克利两地，招募的被试样本涵盖神经典型个体（neurotypic）与弱视患者（amblyopic）两类。我们采用多种立体视测试（stereotest）方案对被试的立体视锐度（stereoacuity）进行了测定：- 蝴蝶图形与圆形刺激：设置3种观看条件，分别为旋转90度、正向及倒置；- 兰德环（Randot）图形与圆形刺激：设置3种观看条件，分别为旋转90度、正向及倒置，且其中一种条件需单眼遮盖；- 无冗余非立体深度线索的心理物理立体视测试：采用线条单刺激范式或动态随机点立体图（dynamic random-dot stereograms）恒定刺激范式。本研究的核心目标为：验证临床立体视测试是否存在单眼线索（若存在，则单眼遮盖条件下的测试结果将呈现非随机性）；尤为重要的是，验证临床测试是否可通过双眼非立体线索完成（若存在，则旋转90度的观看条件下测试结果将呈现非随机性）；此外，探究能否通过临床立体视测试（兰德环测试与蝴蝶图形测试）准确预测心理物理立体视测试中的立体盲（stereoblindness）情况。本研究结果表明：兰德环测试中未发现单眼线索，两项临床立体视测试中亦未存在双眼非立体线索，且无法通过临床测试结果可靠预测心理物理立体视测试中的立体盲或立体视损伤情况。