scholarly journals A novel multi-word paradigm for investigating semantic context effects in language production

PLoS ONE ◽  
2020 ◽  
Vol 15 (4) ◽  
pp. e0230439
Author(s):  
Cornelia van Scherpenberg ◽  
Rasha Abdel Rahman ◽  
Hellmuth Obrig
Keyword(s):  
Language Production ◽  
Context Effects ◽  
Semantic Context

scholarly journals A novel multi-word paradigm for investigating semantic context effects in language production

2019 ◽  
Author(s):  
Cornelia van Scherpenberg ◽  
Rasha Abdel Rahman ◽  
Hellmuth Obrig
Keyword(s):  
Eye Tracking ◽  
Picture Naming ◽  
Language Production ◽  
Context Effects ◽  
Semantic Context ◽  
The Novel ◽  
Target Picture ◽  
Novel Variant ◽  
Lexical Interference ◽  
Respective Category

Semantic context modulates precision and speed of language production. Using different experimental designs including the Picture-Word-Interference (PWI) paradigm, it has consistently been shown that categorically related distractor words (e.g., cat) inhibit retrieval of the target picture name (dog). Here we introduce a novel variant of the PWI paradigm in which we present 8 words prior to a to be named target picture. Within this set, the number of words categorically related was varied between 3 and 5, and the picture to be named was either related or unrelated to the respective category. To disentangle interacting effects of semantic context we combined different naming paradigms manipulating the number of competitors, and assessing the effect of repeated naming instances. Evaluating processing of the cohort by eye-tracking provided us with a metric of the (implicit) recognition of the semantic cohort. Results replicate the interference effect in that overall naming of pictures categorically related to the distractor set was slower compared to unrelated pictures. However, interference did not increase with increasing number of distractors. Tracking this effect across naming repetitions, we found that interference is prominent at the first naming instance of every picture only, whereby it is stable across distractor conditions, but dissipates across the experiment. Regarding eye-tracking our data show that participants fixated longer on semantically related items, indicating the identification of the lexico-semantic cohort. Our findings confirm the validity of the novel paradigm and indicate that besides interference during first exposure, repeated exposure to the semantic context may facilitate picture naming and counteract lexical interference.

Electrophysiological Chronometry of Semantic Context Effects in Language Production

2011 ◽  
Vol 23 (7) ◽  
pp. 1567-1586 ◽  
Author(s):  
Sabrina Aristei ◽  
Alissa Melinger ◽  
Rasha Abdel Rahman
Keyword(s):  
Speech Production ◽  
Language Production ◽  
Lexical Processing ◽  
Temporal Dynamics ◽  
Context Effects ◽  
Semantic Context ◽  
Interference Effects ◽  
Brain Potentials ◽  
Production Research ◽  
Overt Speech

In this study, we investigated semantic context effects in language production with event-related brain potentials, extracted from the ongoing EEG recorded during overt speech production. We combined the picture–word interference paradigm and the semantic blocking paradigm to investigate the temporal dynamics and functional loci of semantic facilitation and interference effects. Objects were named in the context of semantically homogeneous blocks consisting of related objects and heterogeneous blocks consisting of unrelated objects. In each blocking condition, semantically related and unrelated distractor words were presented. Results show that classic patterns of semantically induced facilitation and interference effects in RTs can be directly related to ERP modulations located at temporal and frontal sites, starting at about 200 msec. Results also suggest that the processes associated with semantic facilitation and interference effects (i.e., conceptual and lexical processing) are highly interactive and coincide in time. Implications for the use of event-related brain potentials in speech production research and implications for current models of speech production are discussed.

scholarly journals Semantic Interference through Multiple Distractors in Picture Naming in People with Aphasia

2021 ◽  
pp. 1-22
Author(s):  
Cornelia van Scherpenberg ◽  
Rasha Abdel Rahman ◽  
Frank Regenbrecht ◽  
Hellmuth Obrig
Keyword(s):  
Interference Effect ◽  
Picture Naming ◽  
Language Production ◽  
Semantic Processing ◽  
Context Effects ◽  
Semantic Context ◽  
Lexical Representation ◽  
Lexical Retrieval ◽  
Semantic Interference ◽  
The Impact

Abstract When we refer to an object or concept by its name, activation of semantic and categorical information is necessary to retrieve the correct lexical representation. Whereas in neurotypical participants it is well established that semantic context can interfere with or facilitate lexical retrieval, these effects are much less studied in people with lesions to the language network and impairment at different steps of lexical-semantic processing. Here, we applied a novel picture naming paradigm, where multiple categorically related and unrelated words were presented as distractors before a to-be-named target picture. Using eye tracking, we investigated preferential fixation on the cohort members versus nonmembers. Thereby, we can judge the impact of explicit acknowledgment of the category and its effect on semantic interference. We found that, in contrast to neurotypical participants [van Scherpenberg, C., Abdel Rahman, R., & Obrig, H. A novel multiword paradigm for investigating semantic context effects in language production. PLoS One, 15, e0230439, 2020], participants suffering from mild to moderate aphasia did not show a fixation preference on category members but still showed a large interference effect of ∼35 msec, confirming the implicit mechanism of categorical interference. However, preferential fixation on the categorically related cohort words correlated with clinical tests regarding nonverbal semantic abilities and integrity of the anterior temporal lobe. This highlights the role of supramodal semantics for explicit recognition of a semantic category, while semantic interference is triggered if the threshold of lexical cohort activation is reached. Confirming psycholinguistic evidence, the demonstration of a large and persistent interference effect through implicit lexico-semantic activation is important to understand deficits in people with a lesion in thelanguage network, potentially relevant for individualized intervention aiming at improving naming skills.

scholarly journals Naming pictures and sounds: Stimulus type affects semantic context effects

2020 ◽  
Author(s):  
Stefan Wöhner ◽  
Andreas Mädebach ◽  
Jörg D. Jescheniak
Keyword(s):  
Picture Naming ◽  
Context Effect ◽  
Context Effects ◽  
Semantic Category ◽  
Naming Task ◽  
Semantic Context ◽  
Perceptual Processing ◽  
Semantic Interference ◽  
Lexical Processes ◽  
Naming Tasks

Semantic context effects obtained in naming tasks have been most influential in devising and evaluating models of word production. We re-investigated this effect in the frequently used blocked-cyclic naming task in which stimuli are presented repeatedly either sorted by semantic category (homogeneous context) or intermixed (heterogeneous context). Previous blocked-cyclic naming studies have shown slower picture naming responses in the homogeneous context. Our study compared this context effect in two task versions, picture naming and sound naming. Target words were identical across task versions (e.g., participants responded with the word “dog” to either the picture of that animal or to the sound [barking] produced by it). We found semantic interference in the homogeneous context also with sounds and the effect was substantially larger than with pictures (Experiments 1 and 2). This difference is unlikely to result from extended perceptual processing of sounds as compared to pictures (Experiments 3 and 4) or from stronger links between pictures and object names than between sounds and object names (Experiment 5). Overall, our results show that semantic context effects in blocked-cyclic naming generalize to stimulus types other than pictures and – in part – also reflect pre-lexical processes that depend on the nature of the stimuli used for eliciting the naming responses.

Transforming semantic interference into facilitation in a picture–word interference task

2015 ◽  
Vol 37 (5) ◽  
pp. 1025-1049 ◽  
Author(s):  
QINGFANG ZHANG ◽  
CHEN FENG ◽  
XUEBING ZHU ◽  
CHENG WANG
Keyword(s):  
Context Effect ◽  
Context Effects ◽  
Semantic Context ◽  
Context Word ◽  
Lexical Selection ◽  
Semantic Interference ◽  
Facilitation Effect ◽  
Interference Task ◽  
Empirical Level ◽  
Basic Level

ABSTRACTA number of studies that observed semantic facilitation in a picture–word interference task questioned the hypothesis that lexical selection during speech production is a competitive process. Semantic facilitation effects are typically observed when context words and target names do not belong to the same semantic category level. In the experiments reported in this article, we used a picture–word interference task with basic-level context words and basic-level naming (i.e., the context word is dog, and the target name is cat) to investigate semantic context effects. We observed a reversal of semantic context effect: context words that induce semantic interference when stimulus onset asynchrony (SOA) are –100 and 0 ms and induce semantic facilitation at large negative SOA values (from –1000 to –400 ms, in steps of 200 ms). At the empirical level, our data suggest that manipulating SOA can reverse the polarity of the semantic context effect. Our analysis demonstrates that the conceptual selection model provides the most straightforward way to account for the reported polarity shift and the different SOA ranges covered by the semantic interference effect and the semantic facilitation effect.

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