Attention mechanisms underlying dual‐color digital visual search based on Schulte grid: An event‐related potential study

Brain and Behavior

卷:12

Wei Zhang¹  Aiqiang Lu¹  Zezhi Li²  Dongmei Wang³  Qiuyi Zhongcheng³  Shengxi He⁴ 

[1] College of Psychology Shenzhen University Shenzhen Guangdong China;

[2] Department of Psychiatry The Affiliated Brain Hospital of Guangzhou Medical University Guangzhou China;

[3] Institute of Psychology CAS and Department of Psychology University of Chinese Academy of Sciences Beijing China;

[4] Shenzhen Health Development Research Center Shenzhen Guangdong China;

关键词: attention;    color priority;    event‐related potential;    perceptual load;    visual search;   

DOI  :  10.1002/brb3.2471

来源: DOAJ

【 摘 要 】

Abstract Background Attention selection is considered to be determined by the perceptual load of cognitive tasks and attention resources that are assigned to processing‐independent stimuli. Methods Using visual search paradigm and Schulte grid, the behavioral responses and event‐related potential (ERP) of 27 pupils aged 8–11 (12 girls and 15 boys) were recorded. The subjects were asked to search for the numbers 1, 2, and 3 sequentially and locate the number 5 in the case of monochromatic (black) and bicolor (black‐red) numbers. Results We found that the sequential search task took longer than the location search task (p < .05). Furthermore, both search tasks took longer in two‐color conditions than in monochromatic conditions. However, as for sequential search and location search tasks, no significant intra‐group difference was found. ERP data showed that there was significant difference between monochromatic and bichromatic conditions in locating search tasks (P2–P4: p < .05; T7: p < .05, T8: p < .05), but there was no significant difference in sequential search tasks. Conclusions Our results indicates that red will be interfered when searching for one number, but will not be interfered when searching for three numbers, which is related to the higher perceptual load of sequential search tasks and less attention resources than those used to interfere with stimulus processing.

【 授权许可】

Unknown