The P600 as a continuous index of integration effort

Aurnhammer, Christoph; Delogu, Francesca; Brouwer, Harm; Crocker, Matthew W.

doi:10.1111/psyp.14302

Cited by 12 publications

(1 citation statement)

References 90 publications

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“…2018a ). Recent pieces of evidence point out that the P600 might be a controlled component reflecting a continuous index of integration effort whose amplitude varies continuously with integrative effort ( Aurnhammer et al. 2023 ), while the LAN component is believed to be a more automatic and less controlled component ( Batterink and Neville 2013 , Jiménez-Ortega et al.…”

Section: Discussionmentioning

confidence: 99%

The bigger your pupils, the better my comprehension: an ERP study of how pupil size and gaze of the speaker affect syntactic processing

Jiménez-Ortega,

Casado-Palacios,

Rubianes

et al. 2024

Social Cognitive and Affective Neuroscience

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Gaze direction and pupil dilation play a critical role in communication and social interaction due to their ability to redirect and capture our attention and relevance for emotional information. The present study aimed to explore whether the pupil size and the gaze direction of the speaker affect language comprehension. Participants listened to sentences that could be correct or contain a syntactic anomaly, while the static face of a speaker was manipulated in terms of gaze direction (direct, averted) and pupil size (mydriasis, miosis). Left anterior negativity (LAN) and P600 linguistic ERP components were observed to syntactic anomalies for all conditions. The speaker’s gaze did not impact syntactic comprehension. However, the amplitude of the LAN component for mydriasis (dilated pupil) was larger than for miosis (constricted pupil) condition. Larger pupils are generally associated with care, trust, interest, and attention, which might facilitate syntactic processing at early automatic stages. The result also supports the permeable and context-dependent nature of syntax. Previous studies also support an automatic nature of syntax (fast and efficient), which combined with the permeability to relevant sources of communicative information, such as pupil size and emotions, is highly adaptive for language comprehension and social interaction.

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Section: Discussionmentioning

confidence: 99%

The bigger your pupils, the better my comprehension: an ERP study of how pupil size and gaze of the speaker affect syntactic processing

Jiménez-Ortega,

Casado-Palacios,

Rubianes

et al. 2024

Social Cognitive and Affective Neuroscience

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Single-trial neurodynamics reveal N400 and P600 coupling in language comprehension

2023

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Theories of the electrophysiology of language comprehension are mostly informed by event-related potential effects observed between condition averages. We here argue that a dissociation between competing effect-level explanations of event-related potentials can be achieved by turning to predictions and analyses at the single-trial level. Specifically, we examine the single-trial dynamics in event-related potential data that exhibited a biphasic N400–P600 effect pattern. A group of multi-stream models can explain biphasic effects by positing that each individual trial should induce either an N400 increase or a P600 increase, but not both. An alternative, single-stream account, Retrieval-Integration theory, explicitly predicts that N400 amplitude and P600 amplitude should be correlated at the single-trial level. In order to investigate the single-trial dynamics of the N400 and the P600, we apply a regression-based technique in which we quantify the extent to which N400 amplitudes are predictive of the electroencephalogram in the P600 time window. Our findings suggest that, indeed, N400 amplitudes and P600 amplitudes are inversely correlated within-trial and, hence, the N400 effect and the P600 effect in biphasic data are driven by the same trials. Critically, we demonstrate that this finding also extends to data which exhibited only monophasic effects between conditions. In sum, the observation that the N400 is inversely correlated with the P600 on a by-trial basis supports a single stream view, such as Retrieval-Integration theory, and is difficult to reconcile with the processing mechanisms proposed by multi-stream models.

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Processing of complex morphosyntactic structures in French: ERP evidence from native speakers

Grevisse,

Watorek,

Heidlmayr

et al. 2023

Brain and Cognition

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The P600 as a continuous index of integration effort

Cited by 12 publications

References 90 publications

The bigger your pupils, the better my comprehension: an ERP study of how pupil size and gaze of the speaker affect syntactic processing

The bigger your pupils, the better my comprehension: an ERP study of how pupil size and gaze of the speaker affect syntactic processing

Single-trial neurodynamics reveal N400 and P600 coupling in language comprehension

Processing of complex morphosyntactic structures in French: ERP evidence from native speakers

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