不同情绪模式图片眼动特征的研究

目的比较不同情绪模式图片的眼动结果,探索能反映图片情绪因素对人们影响程度的眼动指标,探讨人们观看情绪图片的眼动特征。方法根据40名被试对40张情绪图片的评分结果,挑选出5张有显著差异的情绪图片,分别定义为正性、偏正性、中性、偏负性、负性5种类型。以选出的5张情绪图片为刺激材料,另选39名被试运用EYELINK-II眼动仪进行眼动实验,每张图片呈现20s,运用单因素方差分析及多重比较方法分析眼动数据。结果注视点总数、注视点平均注视时间、最大瞳孔尺寸和平均瞳孔尺寸指标均差异有显著性。在四个有显著差异的眼动指标中,负性图片和正性图片均与中性图片差异有显著性。注视点总数结果正性图片[(57.56±20.66)个]、负性图片[(51.82±20.54)个]均多于中性图片[(41.97±17.77)个];平均瞳孔尺寸结果正性图片[(1022.98±328.09)units]、负性图片[(1058.89±377.58)units]均大于中性图片[(831.60±265.98)units]。结论不同情绪模式图片的眼动特征有差异,注视点总数与平均注视时间、最大瞳孔尺寸与平均瞳孔尺寸指标是评价情绪图片的较好指标,人们观看正、负性图片比观看中性图片时瞳孔更大、注视点更多。

A comparative eye tracking study of different kinds of affective pictures

Objective To compare the eye tracking data of different kinds of affective pictures,and determine what indicators can reflect picture emotionality.Methods 5 from 40 affective pictures were chosed after 40 testees had graded them,and 5 affective pictures with significant difference were difined:positive type,sub-positive type,neutral type,sub-negative type and negative type.During the picture view test,39 testees saw the 5 pictures in random sequence.Results There were significantly difference in fixation count,average fixation duration,pupil size max and pupil size mean.Positive and negative type pictures were significantly difference with neutral type picture in fixation and pupil size.Conclusion Fixation count,average fixation duration,pupil size max and pupil size mean could reflect picture emotionality.Affective picture(positive and negative type)seeing would lead to larger pupil size and more fixation count than neutral pictures.