Little is known about the time course of processes supporting episodic cued recall. To examine these processes, we recorded event-related scalp electrical potentials during episodic cued recall following pair-associate learning of unimodal object-picture pairs and crossmodal object-picture and sound pairs. Successful cued recall of unimodal associates was characterized by markedly early scalp potential differences over frontal areas, while cued recall of both unimodal and crossmodal associates were reflected by subsequent differences recorded over frontal and parietal areas. Notably, unimodal cued recall success divergences over frontal areas were apparent in a time window generally assumed to reflect the operation of familiarity but not recollection processes, raising the possibility that retrieval success effects in that temporal window may reflect additional mnemonic processes beyond familiarity. Furthermore, parietal scalp potential recall success differences, which did not distinguish between crossmodal and unimodal tasks, seemingly support attentional or buffer accounts of posterior parietal mnemonic function but appear to constrain signal accumulation, expectation, or representational accounts.
|Number of pages||16|
|Journal||Cognitive, Affective and Behavioral Neuroscience|
|State||Published - Mar 2014|
Bibliographical noteFunding Information:
This work was supported by the Israel Science Foundation grant 611/09. We thank Shir Ben-Zvi, Ayelet Peer, Inbar Shimson, Maia Duarte, and Odelia Nakar-Goldberg for assistance with stimuli preparation, data collection, and analysis and Profs. Axel Mecklinger and John T. Wixted for valuable comments.
- Cued recall
- Episodic memory
- Parietal lobes