The effect of orienteering on visual working memory: evidence from ERP
Mini-Oral Presentation A3.18
DOI:
https://doi.org/10.14288/hfjc.v14i3.459Keywords:
Orienteering, Mountain Cross-Country, Sedentary Group, Visual Working Memory (VWM), Event-Related Potential (ERP)Abstract
Purpose: To study the relationship between different types of physical activities (orienteering, mountain cross-country and sedentary) and visual working memory, so as to provide reference for people who want to improve VWM. Methods: The forty-eight subjects comprise of orienteering expert (OP), mountain cross-country expert (MP) and sedentary group (SG), with 16 each, and both genders are in equal numbers, with an average age of 20.56 ±1.25. The VWM index includes the capacity and accuracy of memory. According to the delayed matching-to-sample (DMS), the experimental program was compiled. The potential activities during the keystroke reaction experiment were recorded by ERP, and the correct rate and reaction time were analyzed by SPSS24.0. Results: Behavioral results: the accuracy of OP and MP were both higher than that of SG, even the accuracy of OP significantly higher than that of MP. The reaction time of OP and MP were both remarkably higher than that of SG, but there was no considerable difference between OP and MP. ERP results: During the delayed phase of the experiment, the activation of the left central region of OP was significant, while the other regions were significantly suppressed; the activation of the right frontal of MP was remarkable, while the other regions were significantly inhibited; there are significant activation in several brain regions of SG, including the right prefrontal, the right frontal, the left temporal and so on. In the probe phase of the experiment, the left occipital, the left parietal and other vision-related brain regions of OP were significantly activated, while other unrelated brain regions were significantly suppressed; EEG of MP showed activation in all brain regions except the right frontal, in which the occipital and temporal showed the most significant activation; most of the brain regions of SG showed abnormal activity, except the central frontal. Conclusions: Compared with sedentary, physical activity can improve the capacity of VWM. However, in almost all types of physical activity, orienteering, which exerts load on visual cognition, can improve the capacity and accuracy of VWM to a large extent.
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