The Influence Of Different Intensities Of Approach Motivation And Positive Emotions On False Memory - A Near Infrared Stud

Previous studies have focused on the effects of emotional valence and arousal dimensions on false memory.With the introduction of the motivational dimension of emotion,more and more scholars have supported the motivational dimension model theory by studying the impact of this independent dimension on attention,cognitive control,and memory.Based on previous literature,it can be speculated that positive emotions of higher proximity motivation induce the theme detail trade–off effect,i.e.individuals with this emotion are more inclined to remember the theme.In addition,recent evidence from cognitive science has found that positive emotions in higher proximity motivation are associated with increased activation of the left prefrontal lobe compared to positive emotions in lower proximity motivation,indicating that the left prefrontal lobe plays an important role in proximity motivation,and proximity motivation affects the cognitive processing process of individuals.So far,few empirical studies have directly examined the psychological and neural processes that affect false memory through the motivational dimensions of emotions.In this study,DRM paradigm,and functional near infrared spectroscopy(f NIRS)were used to elicit positive emotions of approaching motivation at three levels of intensity,namely,high,medium,and low,in 32 randomly recruited subjects using the expression – posture method.The phenomenon of false memory generated by individuals in three scenarios was investigated and the neural activity in the left frontal and temporal cerebral cortex was analyzed.The purpose of this study is to explore the psychological and neural mechanisms by which positive emotions with different intensities of approaching motivation affect the generation of false memories.The behavioral results showed that under the DRM paradigm,individuals with high and moderate approaching motivation and positive emotions had significantly higher false recognition rates of key bait words than individuals with low approaching motivation and positive emotions.Brain imaging results showed that the left frontal lobe and temporal lobe(middle and lower gyrus)of individuals with three emotions were significantly activated,and there was a significant difference in the activation of this brain region in the left frontal lobe(middle and lower gyrus),in positive emotions with high approach motivation,and in positive emotions with medium and low approach motivation.Further,combining behavioral results with brain imaging results,it was found that under positive emotions with high degree of approaching motivation,the degree of activation of the left temporal lobe(middle and lower gyrus)of the individual was significantly and positively correlated with the proportion of false memories in the individual.The above results indicate that positive emotions with different intensities of approaching motivation can have different effects on false memory,and individuals have different levels of activation of interest regions under the three emotions.This result provides important evidence for our understanding of the psychological and neural mechanisms by which positive emotions with different intensities of approaching motivation affect false memories in the DRM paradigm.