Relationship between preference and gaze for modified food in the young and elderly using an eye tracker
2019 年 53 巻 1 号 p. 81-88
詳細
2019 年 53 巻 1 号 p. 81-88
The relation between subconscious preference and gaze in young and elderly for test foods using an eye‐tracking system was investigated. The subjects were 15 young adults and 16 elderly. Test foods were 150 g of steamed rice, approximately 45 g of grilled salmon, and 60 g of slice cooked squash. The food preparation types were unmodified, chopped and blended. After placement of the eye tracker, participants watched freely each dish arranged in front of them for 10 sec. Then they ate the test foods freely within 10 min. We analyzed the total number of gaze point fixations, the total gaze point fixation time, the amount of food intake, preference level details, and the correlation between the total number of gaze point fixations and the total the gaze point fixation time were analyzed. Statistical analysis was performed using the Friedman test for the total number of gaze point fixations, the total gaze point fixation time, and the amount of food intake. If a significant difference was observed, the Wilcoxon signed‐rank test was performed. Statistical analysis was performed using the correlation coefficient for the correlation between the total number of gaze point fixations and the total gaze point fixation time. For foods with higher preference levels, the total number of gaze point fixations and the total gaze point fixation time increased. (J Osaka Dent Univ 2019; 53: 81‐88)
