Electrophysiological study of contextual variations in a short-term face recognition task

Guillaume, Fabrice; Tiberghien, Guy

doi:10.1016/j.cogbrainres.2004.10.009

Cited by 15 publications

(5 citation statements)

References 64 publications

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“…This blurred representation is sufficient to activate predictions about the identity of the object, which are then integrated downstream into the visual cortex along with the bottom-up stream of analysis to facilitate recognition. In this view, memory effect has already been observed on the N170 also during short-term recognition (e.g., Guillaume & Tiberghien, 2001, 2005).…”

Section: Discussionmentioning

confidence: 84%

An ERP Investigation of Object-Scene Incongruity

Guillaume

Tinard

Baier

et al. 2018

Journal of Psychophysiology

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Abstract. The present study investigated the temporal dynamics of the object-scene congruity during a categorization task of objects embedded in a scene. Participants (n = 28) categorized objects in scenes as natural or man-made while event-related brain potentials (ERPs) were recorded. The object-scene associations were either congruous (e.g., a tent in a field) or incongruous (e.g., a fridge in a desert). The results confirmed that contextual congruity affects item processing in the 300–500 ms time window with larger N300/N400 complex in the incongruous than in the congruous condition. However, unlike previous work which found an effect of congruity starting at ~ 250 ms poststimulus on fronto-central regions, the earliest sign of a reliable context congruity effect arose at ~ 170 ms at left centro-parietal regions in the present study. The present results are in line with those of previous studies showing that object and context are processed in parallel with continuous interactions from 150 to 500 ms, possibly through feed-forward co-activation of populations of neurons selective to the processing of the object and its context. The present finding provides novel evidence suggesting that online context violations might affect earlier visual processes and routines of matching between possible scene-congruent activated schemas and the upcoming information about the item to process.

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Section: Discussionmentioning

confidence: 84%

An ERP Investigation of Object-Scene Incongruity

Guillaume

Tinard

Baier

et al. 2018

Journal of Psychophysiology

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“…For example, some authors have reported that only the parietal old/new effect related to recollection is affected by LOP (Greve, Rossum, & Donaldson, ; Paller & Kutas, ), while others have found both the mid‐frontal N400 and parietal old/new effects to be affected by LOP (Rugg, Allan, & Birch, ). In this context, a dissociation between early ERP fluency effects related to perceptual or conceptual priming during the 300–500 ms time window (Guillaume & Tiberghien, ; Voss et al, ) and late ERP fluency effects related to the interpretation of fluency (i.e., as evidence of something other than prior study: Kurilla & Gonsalves, ) has emerged. Interestingly, this fluency can emanate from perceptual features (e.g., Bruett & Leynes, ) as well as from conceptual overlap (e.g.,Voss et al, ).…”

Section: Introductionmentioning

confidence: 94%

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

2020

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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.

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“…Importantly, in these designs, the specific information that was associated to the studied face was presented at study but absent at test. Considering that perceptual mismatch causes modulations in the ERP correlates of face recognition (e.g., Groh-Bordin et al, 2006;Guillaume and Tiberghien, 2005), the possibility that the lack of information associated with the face at study time could disrupt automatic matching of the recognized face, and thus the ERP correlates of familiarity, cannot be neglected. The situation gets even more complicated if we consider that changes between study and test affect familiarity in different ways depending on what information is modified and whether or not it was unified with the face at study time.…”

Section: Introductionmentioning

confidence: 99%