High-density scalp EEG in perception of Gestalt stimuli in an inattentional blindness paradigm

Behavioral and electroencephalography (EEG) data were recorded in an inattentional blindness paradigm. Thirty participants performed a demanding, attention-capturing task in which they had to detect an occasional decrement in the luminance of small discs. Crucially, numerous white segments in the background were presented either in random orientations or configuring a contour shape of a square or a diamond. EEG was recorded using a Geodesic Sensor Net with 256 Ag/AgCl scalp electrodes with a high input impedance amplifier (EGI, a Philips company, Eugene, OR, USA). The participants’ awareness about these background configurations was tested with a questionnaire after the first and second sessions. On the basis of the questionnaire test, participants were divided into “aware” and “unaware” groups. These data may be of interest for researchers who wish to understand attentional effects on Gestalt integration processes, as well as luminance discrimination.

本数据集包含不注意视盲范式下采集的行为学与脑电图（electroencephalography, EEG）数据。30名参与者需完成一项高负荷注意力捕获任务，即检测小型圆盘亮度的偶发性降低。尤为关键的是，背景中会呈现大量白色线段，这些线段要么处于随机朝向，要么会拼接形成正方形或菱形的轮廓。脑电图数据采用EGI（飞利浦旗下子公司，美国俄勒冈州尤金市）的Geodesic Sensor Net脑电传感器系统采集，该系统搭载256个Ag/AgCl头皮电极与高输入阻抗放大器。在第一、第二实验阶段结束后，研究者通过问卷评估了参与者对上述背景轮廓的知晓程度。基于问卷测试结果，参与者被划分为“aware（知晓）”组与“unaware（未知晓）”组。本数据集可供旨在探究注意力对格式塔（Gestalt）整合过程与亮度辨别影响的科研人员参考使用。