Predicting Normal People’S Reaction Time Based on Hippocampal Local Efficiency During A Memory-Guided Attention Task

Background: there are some convincing shreds of evidence indicating that memory can direct attention. the local efficiency of an area in the brain, as a quantitative feature in a complex network, indicates how the surrounding nodes can transfer the information when a specific node is omitted. this feature is a scale for measuring efficient integration of information in the brain. objectives: the purpose of the present study is to predict the reaction time using the local efficiency variable while doing memory-guided attention task. materials and methods: the fmri database of a research done in new york university during a visual search task was used for this study. thirty-five righthanded healthy participants (51% female, mean age= 21.7 years) were recruited at new york university. spm was used for pre-processing fmri images, and conn was used for calculating the values of local efficiency. spss was also used for statistical analysis of the study. results: results of the study revealed that local efficiency of the right hippocampus can positively predict the reaction time during memory-guided attention tasks. conclusion: the findings of the study demonstrated that the hippocampus area has a significant role in the performance of memory-guided attention, and this significant role of the hippocampus reveals that long-term memory uses the hippocampus and affects the movement and attention of eyes on the target