An ERP investigation of item‐scene incongruity at encoding on subsequent recognition

Abstract

The aim of the present study was to investigate how item‐scene incongruity at encoding influences subsequent item recognition and the associated event‐related potential (ERP) old/new effects. Participants (N = 26) studied pictures showing an item in a scene, either in a congruent condition (e.g., a tent in a field) or an incongruent condition (e.g., a shower cabin in a field). Items were presented alone at test. Behavioral data revealed a benefit of incongruent information, with greater source memory performance but no significant effect on old/new recognition judgments. Longer response times for old compared to new items showed that participants not only evaluated the old‐new status of objects during recognition, but also worked already on the scene context decision relative to the source memory judgment. An ERP incongruity effect was found at study, with greater N400 amplitude in the incongruent condition than the congruent condition. During recognition, the results provide evidence that item‐scene incongruity at study increases the amplitude of ERP old/new effects. A mid‐frontal N400 old/new effect was found in the early time window (300–500 ms), and a right frontal sub‐component was modulated by item‐scene incongruity at encoding. The modulation observed in the later time window (500–800 ms) confirmed previous studies showing that the parietal old/new effect reflects the retrieval of episodic contextual details. The present study shows that the magnitude of ERP old/new effects is sensitive to item‐scene incongruity at encoding from the early time window in the right frontal region to the later retrieval processes.

Effects of congruent emotional contexts during encoding on recognition: An ERPs study

“…Specifically, congruity refers to whether the content of a target and its background information aligns with each other. ERPs studies observing this congruity effect consistently detected an N400 effect during encoding (Ganis & Kutas, 2003;Guillaume et al, 2020;Mudrik et al, 2010). Yet, the neural activity related to congruity during retrieval remains underexplored.…”

“…Previous studies have found a modulating effect of congruity on memory performance (Davis et al, 2012;Feyereisen, 2009;Guillaume et al, 2020;Ouwehand et al, 2019;Packard et al, 2020;Tibon et al, 2017;van Kesteren et al, 2013;Worthen & Marshall, 1996).…”

“…Previous studies have found a modulating effect of congruity on memory performance (Davis et al., 2012; Feyereisen, 2009; Guillaume et al., 2020; Ouwehand et al., 2019; Packard et al., 2020; Tibon et al., 2017; van Kesteren et al., 2013; Worthen & Marshall, 1996). Specifically, congruity refers to whether the content of a target and its background information aligns with each other.…”

“…word was correctly recognized with the correct source) compared to new judgments to examine source memory (Guillaume et al, 2020;Minor & Herzmann, 2019;Newsome et al, 2012). Analyses of item memory were calculated as two-way ANOVAs with repeated measures on the within-subject factors of context (emotional, neutral) and item-judgment (hit-congruent, hit-incongruent, and new).…”

“…Yet, the neural activity related to congruity during retrieval remains underexplored. For example, Guillaume et al (2020) showed that incongruent information's recognition benefit elicited more positive waveforms than congruent information. In contrast, studies by Feyereisen (2009) and Ouwehand et al (2019) highlighted a memory advantage for congruent information.…”