09:00 - 10:30
Parallel sessions 4
09:00 - 10:30
Room: HSZ - 7E02
Chair/s:
Susanne Dietrich
Language comprehension often proceeds with remarkable speed, yet successful communication depends on the ability to slow down, revise, and adapt when input is ambiguous, unexpected, or inconsistent. This symposium brings together perspectives from neuroscience, psycholinguistics, and developmental research to examine how temporal flexibility supports coherent comprehension. “Time to think” is not a failure of processing but an adaptive resource: when comprehension is challenged, listeners and readers adjust the pace of processing to integrate conflicting cues, resolve ambiguity, and update mental representations. The symposium opens with a neurobiological perspective, showing how electrophysiological activity supports the processing of acoustic and abstract temporal structures in auditory-verbal stimuli. Studies from sentence comprehension and communicative interaction demonstrate that brain activity not only synchronizes with current stimuli but also aids the management of upcoming input through temporal estimation and prediction. These processes rely on structures such as the basal ganglia and pre-SMA, providing neural scaffolding for adaptive control. Neuroimaging evidence further shows that presupposition failures engage these circuits, indicating that discourse-related reinterpretation depends on adaptive gating and slowing mechanisms. The third talk presents psycholinguistic evidence on negation and pragmatic inference. Negation is rarely purely logical; comprehenders use it as a cue for pragmatic reasoning, revising mental models and integrating contextually relevant alternatives. Less felicitous contexts increase processing time, reflecting the additional effort required to construct a coherent interpretation. Next, a developmental perspective uses eye-tracking data from children learning German and Czech. Younger children struggle to integrate multiple linguistic cues for thematic role assignment, and their ability to reanalyse heuristics depends on language-specific features, such as word order versus case marking. Finally, ambiguity resolution in discourse is examined, showing how verb causality and adjective semantics shape pronoun interpretation. Comprehenders dynamically reweight cues integrating earlier expectations. Together, the contributions illustrate how slowing down, revising, and flexibly reallocating processing resources are central to achieving robust and coherent comprehension under uncertainty.
Submission 402
The Suitcase that Didn’T Exist: fMRI Evidence for Adaptive Mechanisms in Presupposition Processing
SymposiumTalk-02
Presented by: Susanne Dietrich
Susanne DietrichVerena, C. SeiboldBettina Rolke
Evolutionary Cognition, Department of Psychology, University of Tübingen, Germany
Discourse understanding often requires retrieving or constructing context to establish coherent reference relations. Presuppositions (PSPs), linguistic expressions carrying background information, pose a challenge when their referential conditions are unfulfilled. Specifically, coherence may either not be established or be restored through accommodation (e.g., bridging). How the brain adaptively manages these demands under varying memory constraints remains largely unknown.

In an fMRI-behavioral experiment, we investigated two memory processes and PSP types: (a) memory-based contexts, where referential distance varied and triggered existence PSPs, and (b) inference-based contexts, where referents were not explicitly mentioned and contextual plausibility varied, targeting novelty PSPs. Participants judged the coherence of a test sentence relative to the preceding context. Coherence judgments in memory contexts showed that PSP violations were judged as less incoherent when referents appeared more distant, indicating higher working-memory load. In inference contexts, coherence judgments were mainly influenced by plausibility, with a small but significant PSP consistency effect.

For fMRI analysis BOLD responses were time-locked to the PSP trigger. In memory contexts, PSP consistency modulated the left IFG and right supramarginal gyrus (SmG), reflecting working-memory load and integration, while referential distance engaged executive regions such as pre-SMA and middle frontal gyrus. In inference contexts, plausibility violations recruited the salience network (bilateral insula, right SmG) and subcortical basal ganglia-thalamus loops, indicating adaptive allocation of attentional and interpretive resources.

These results highlight the involvement of the salience network in conflict detection and executive regions in maintaining discourse coherence, showing that PSP processing is dynamically shaped by memory constraints.