Correlation Between Implicit And Explicit Memory Encoding And Extraction Of The Difference Erp Performance

The relationship between implicit memory and explicit memory has evoked many research es in the field of cognitive psychology.With increasing integration of cognitive psychology and social psychology,the social cognitive research has made much headway.According to the standard of unconscious and conscious cognitive processing,social cognition can be divided into implicit and explicit cognition.The relevance is an important concept in social cognition.Studies have shown that the distinction of the relevance is implicit.Experimental studies have shown that implicit memory and explicit memory rely on different memory systems,and the memory system and the brain linked to different regions,Whether relevance which is distinguished at the implicit level has the same characteristics in implicit memory,whether relevance will be influenced by the implicit or explicit retrieving formats,what characteristics they will have in ERPs,and what kind of cognitive processing they will reflect,are all what we hope to explore in this study.Two ERP studies were conducted to explore the differences between other-relevant words and possessor-relevant words in implicit and explicit memory tests.The results show that during the incidental encoding,other-relevant words are associated with a more negative ERP than possessor-relevant words during 300-900 ms whether in the implicit or the explicit memory tests. The N400 effect is also found in semantic processing of social materials.There is an ERP dissociation of retrieval formats between the implicit and the explicit memory tests during 700-900 ms,namely,there is no difference between other-relevant words and possessor-relevant words in the implicit memory while there is a significant difference between them in the explicit memory.Observed through Curry 6.0,the analysis of neural sources for other-relevant words and possessor-relevant words indicates that they have different locations.At 400 ms,activity is found in the left precuneus during possessor-relevant words processing.Both the right and the left precuneus are activated during other-relevant words processing.However,at 600 ms their location is both in the left precuneus.In a word,our results show that there exists a cognitive difference between other-relevant words and possessor-relevant words in the retrieval phase and other-relevant words closely related to the percipient himself/herself are strongly responded to, which reflects that there is a bigger attention bias to the stimuli concerning the percipient himself/herself than to processor-relevant words.In experiment 2,we adopted intention encoding task and found that there was no difference between other-relevant and possessor-relevant.Duo to the influence of intention encoding,the difference of relevance in old word of implicit memory and the old and new words in explicit memory.