Abstract：
:The present study focused on the processes underlying cognitive association formation by investigating subsequent memory effects. Event-related potentials were recorded as participants studied pairs of words, presented one word at a time, for later recall. The findings showed that a frontal-positive late wave (LW), which occurred 1-1.6s after the presentation of the second word of a pair during study, was associated with later paired associate recall. The observed LW likely reflected cognitive association formation processing. Paired associate recall was also associated with a larger P555 to each word of a pair, likely reflecting the encoding of each individual word of a pair, which necessarily precedes association formation between the two words. Moreover a larger N425 was elicited by pairs that were encoded in a low context-similarity condition compared to that of a high context-similarity condition, likely reflecting semantic integration. Minimum norm source analyses showed that the likely sources of these ERP effects changed dynamically in time: a widespread fronto-temporo-parietal activation during the N425 was followed by a fronto-temporal activation during the P555, and finally by a left prefrontal activation during the LW.
journal_name
Neuropsychologiajournal_title
Neuropsychologiaauthors
Kim AS,Vallesi A,Picton TW,Tulving Edoi
10.1016/j.neuropsychologia.2009.07.015subject
Has Abstractpub_date
2009-12-01 00:00:00pages
3162-73issue
14eissn
0028-3932issn
1873-3514pii
S0028-3932(09)00310-8journal_volume
47pub_type
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