The ERPs RAW DATA about Attention Mechanism of Dual-color Digital Visual Search
A total of 27 fourth-grade pupils (12 girls and 15 boys) aged 8-11 years old (M=9.8±0.7) were recruited voluntarily from a primary school in Shenzhen. The enrolled subjects had normal vision or corrected vision, normal color discrimination, and right-handedness, and had never participated in similar experiments before. 2.2 Visual experimental materials According to the form of Shulte Grid (5X5 grid), 120 pictures of pure black digits and 120 pictures of red-black digits were formulated and then numbered in an order of 001-120. Each cell contains a random unrepeated number from 1-25. Red-black pictures of digits were formed based on pictures of pure black digits to turn the ones in odd cells into red. For example, there were similar digit and different color in the picture numbered 001 The time spent in the Shulte Grid (5X5) test was recorded in the process of experiment. In other words, included children were informed by the tester to find digits 1, 2 and 3 in sequence or digit 5 directly by using the Schulte Grid. The time taken was recorded at the same time to assess the attention of children.
Steps to reproduce
The experiment adopted a (search task: sequential search of digits 1, 2 and 3/location search of digit 5) x2 (color: pure black/black-red) within-subjects design. The dependent variables were the time needed to complete the search task, and the measurements indexes were the time taken to complete the task and the EEG components in the visual-searching process. Before the experiment, subjects were informed about the context of the experimental task. Each subject was shampooed, dried and sat in the test site, with the electrode cap on assisted by the experimental assistant. After the cap is ready, subjects were informed to adjust to the proper sitting position, look directly at the computer screen and start the test. Participants press the space bar to start a trial and press again to pass on to the next trial. The time in between was recorded as the reaction time for each trial. After completing the program, subjects could rest properly and proceeded to the next program till the completion of the following four program tests: S1 (Pure black sequential search): Find digits 1-3 in sequence and press the space bar when finding digit 3; S2 (Black-red sequential search): Find digits 1-3 in sequence and press the space bar when finding digit 3; S3 (Pure black location search): Find the digit 5 directly, then click the space bar; S4 (Black-red location search): Find the digit 5 directly, then click the space bar. A total of 120 pictures Numbered from 001 to 120 in either monochrome (pure black) or bichrome (black and red) were involved in the four programs. Corresponding numbered pictures were arranged in the same order but in different colors.27 out of 120 pictures were randomly drawn from the pool to be the test materials for each subject.