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Abstract:
Abstract: In event-related potential (ERP) studies,
successful episodic retrieval is associated with parietal and
frontal effects. The parietal effect has been attributed to
recollection, and the frontal effect, to monitoring. However, the
frontal effect has not been found in ERPs of associative recall
(e.g., Rugg et al., 1996). This failure could be due to the use of
a recognize-then-recall paradigm. The use of this paradigm could
also explain the difficulty of finding interference effects on ERPs
of associative recall (Tendolkar et al., 1997). To investigate
these issues, we recorded ERPs during a direct recall paradigm and
manipulated interference using an AB-AC design. Subjects studied
two lists of word-pairs, with half of the pairs in the interference
(AB-AC) and half in the control (AB-CD) condition. At test, they
recalled either the first or the second list. Preliminary analyses
yielded two results. First, compared to non-recalled items,
recalled items were associated with a positivity over bilateral
frontal regions. Second, the parietal ERP effect was attenuated in
the interference condition. Together, the results are consistent
with recollection and monitoring ideas and could explain
inconsistencies in the ERP literature about associative
recall.
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