Word Retrieval Research Articles

Age-related differences in memory encoding and retrieval during referential processing: A time-frequency analysis.

We investigated how lexical form similarity of referential candidates and ambiguity of following pronouns impact the encoding and retrieval of words from memory during sentence processing in younger and older adults. Critical sentences included two noun phrases (henceforth NPs) that were either phonologically and orthographically similar (Jason and Jacob/Jade) or dissimilar (Jason and Matt/Hannah), followed by a pronoun (e.g., he) that was either ambiguous or unambiguous (depending on the genders of the preceding NPs). We analyzed brain activity time-locked to the onsets of the second NP (NP2) and the pronoun to investigate the encoding and the retrieval of the NPs, respectively. During encoding NP2, older adults exhibited greater alpha power when NP1 had the same-gender, whereas younger adults showed no such effect, suggesting an increased need for inhibition for older adults during encoding. Moreover, although both groups exhibited an increase in alpha power for similar NPs, only younger adults exhibited a theta power increase, suggesting similarity-induced inhibition for both groups, but an additional maintenance cost only for younger adults. During retrieval (i.e., on the pronoun), we found that both pronominal ambiguity and form similarity resulted in greater theta power for younger adults, suggesting full pronominal processing and therefore more difficult retrieval, but smaller theta/alpha power for older adults, suggesting good-enough processing and therefore easier retrieval. Together with complementary behavioral results, our findings suggest that older adults resort to good-enough referential processing when the retrieval of relevant representations is cognitively demanding. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Apples, tomatoes, and health: comparison of structural characteristics of the L1 and L2 mental lexicons

Abstract The present study delves into the structure and lexical organization of L1 and L2 mental lexicons. Indirect access to the mental lexicon is provided by semantic fluency tasks, which inform researchers about how the words are organized in the mental lexicon and retrieved when necessary. Here, two groups of participants were asked to retrieve as many words of the category fruits and vegetables as possible in two minutes. The first group is made up of native speakers of Spanish who responded in Spanish L1, whereas the second group is made up of native speakers of Greek who are learning Spanish foreign language (SFL) who responded first in Spanish FL and later in Greek L1. The three sets of responses were scrutinized and compared for similarities and differences. Results point to a retrieval mechanism based on L1-mediated access for SFL learners and slightly different structures of the mental lexicon. Even in very advanced learners, lexical organization and word retrieval in the FL resembles L1 organization.

Neighbourhood Density in Spoken Word Recognition: An Eye-Tracking Study

Bilingual acquisition research has so far focused on comparisons with monolingual children in terms of linguistic features, performance on standardised tests, input, etc. In contrast, new methodologies, such as eye-tracking, can offer a more detailed understanding of the way bilinguals use both language systems. Eye fixations provide evidence of online processing. This study investigates spoken word recognition in children and adults. Word retrieval is affected by the number of words that minimally differ from the target (neighbourhood). Previous research found that only bilingual adults activated a similar-sounding competitor from the other language. As children have been found to be sensitive to neighbourhood density from quite early in previous research, similar results might be expected. This study includes 56 subjects (11 German–English bilingual and 12 English monolingual children, aged 8; 21 English monolingual and 12 German–English bilingual adults). The subjects’ online processing of competing items for high- and low-density targets was compared. The results confirm that neighbourhood density affects word recognition in adults and children. The bilingual children activated same-language competitors as well as similar-sounding competitors from the other language. Adults and children differed in terms of latencies, and the monolinguals were more accurate than the bilingual subjects.

Framework Proposal: A Semantic Feature Analysis of Kennings to Support Their Role in Aiding Word Retrieval in Oral Old English Poetry

The purpose of this paper is to explore the role of kennings’ use in Old English (OE) poetry beyond their rhetorical power, more specifically, their role as mnemonic devices. Generally, kennings are used to refer to a certain entity using a more complex and descriptive way, more than one individual tag. This way of encoding referents seems to carry more than aesthetic value for poets and bards. Seeing as Old English poetry is oral in nature, I believe there is an argument to be made for the use of specific structures that can aid word and context retrieval, especially in longer-form content. As such, kennings would function as anchors, and I argue that they function this way because they contain semantic information that supports word retrieval. The framework for analysing this type of word formation is based on semantic feature analysis, which is a protocol used in the therapy of aphasia and anomia to improve word retrieval in post-stroke patients. Beyond this analysis, this paper will argue for the importance of considering alternate, novel techniques and methodologies for the study of Old English and for the diachronic study of language altogether, hoping to help bridge the gap between different areas of research.

Lexical retrieval difficulties in post-COVID-19 syndrome: Insights from verbal fluency and naming tasks.

Although considerable research has been conducted on post-COVID-19 syndrome (PCS), cognitive symptoms, particularly those related to language, are still not well understood. To provide a detailed quantitative and qualitative analysis of language performance in PCS patients using a comprehensive set of semantic and verbal production tasks. The study involved 195 PCS patients aged 26-64 years and 50 healthy controls aged 25-61 years. Participants were assessed using two semantic tasks, three naming tasks and four types of verbal fluency tasks, designed to evaluate different aspects of language processing. PCS patients demonstrated significantly poorer performance compared with controls across all verbal fluency tasks. This was evident in both the total number of words generated and their types, with patients tending to choose more easily accessible words. In naming tasks, the pattern of errors was similar in both groups, although patients showed a higher number of non-responses and made more errors, reflecting difficulties in word retrieval. The analysis highlighted the impact of factors such as stimulus availability, educational level and cognitive reserve on performance. Notably, younger patients performed worse than older, a paradoxical trend also observed in previous research. These findings reveal significant word retrieval difficulties in PCS patients, suggesting that cognitive impairment related to language may be more pronounced than previously understood. The results underscore the need for a thorough evaluation of language functions in PCS patients and the development of more targeted and individualized language rehabilitation strategies to address these specific challenges. What is already known on the subject Studies on the cognitive characteristics of CPS have focused mainly on broad-spectrum neuropsychological assessments covering all cognitive functions. However, there are very few studies analysing oral production with specific lexical and semantic system tasks. Furthermore, no work has specifically included tasks assessing semantic processing or conducted qualitative analyses of the psycholinguistic variables affecting performance. Such analyses could undoubtedly help clarify the nature of the language impairments in patients with PCS. What this paper adds to the existing knowledge This study explores in depth the evaluation and analysis of the oral production of patients with PCS using several lexical and semantic tasks. In addition, psycholinguistic variables are analysed that could undoubtedly help clarify the nature of the language impairments in patients with PCS. What are the potential or actual clinical implications of this work? The study allows the identification of specific lexical-semantic deficits in the spoken language in patients with this PCS. A more detailed assessment of the oral language of these patients, keeping in mind the psycholinguistic variables that may affect the performance, will facilitate the design of more efficient and individualized rehabilitation programmes.

Does Parkinson's disease affect verb production in picture descriptions?

Research on Parkinson's disease (PD) has documented significant deficits in verb production, with more robust results in single word retrieval tasks than in connected speech, yet the underlying causes of these deficits are disputable, especially concerning connected speech production. We analyzed picture descriptions provided by 48 individuals with PD and 48 age-matched healthy controls, and examined the percent of nouns and verbs of all words, the number of described events, verbs denoting activity, verbs in active morpho-syntactic patterns, and transitive verbs. Individuals with PD produced a lower percent of verbs than did control participants, but the groups differed in no other variable. Scores on a cognitive screening task associated with the percent of verbs and the number of events. We suggest that verb retrieval in connected speech in PD reflects no specific difficulty with action semantics, but rather the spread of PD pathology into more diffuse verb-specific neural networks.

Aphasia therapy software: an investigation of the research literature and the challenges of software development

ABSTRACT Aphasia therapy software: aninvestigation of the research literature and the challenges of software development Background Digital aphasia therapy has become increasingly popular over the past years. However, not all software described in the literature appears to reach clinical practice. It is currently unclear why this is the case. Aim We had two aims. First, we aimed to create an overview of the digital aphasia therapy described and its clinical availability bysystematically searching and reviewing the research literature. Second, we aimed to investigate the experiences of researchers/developers of aphasia therapy software. Method & Procedures We conducted a systematic search and review, screening references against our inclusion criteria. Clinical availability of the software was established through reading literature, conducting internet searches, and by contacting the researchers/developers who were associated with the software. Researchers/developers of the reported software were surveyed about their experiences with software development. Responses were the matically analysed into themes and subthemes. Outcomes & Results We identified a total of 63 unique pieces of software across 125 references. The software was mainly developed for English speakers and mainly focused on word retrieval or a combination of language skills. We established clinical availability with certainty for 35 pieces of software, with the remaining software (likely) currently clinically unavailable. From the survey data, we identified five recurring themes: 1) software development can be expensive and insufficient funding hinders their clinical availability; 2) commercialisation of software is often new and daunting to researchers but essential for making software available; 3) clinicians and people with aphasia are valuable sources of feedback; 4) working with software developers can be difficult; and 5) aphasia therapy software should combine both the evidence base and current clinical need. Conclusions Aminority of aphasia therapy software described in the literature reaches clinical practice. It is clear that the development and subsequent dissemination of aphasia therapy software requires large amounts of time, energy, and funds but we conclude that this is essential for successful clinical implementation.

B - 125 Atypical Alzheimer’s Disease in a Highly Educated Individual: a Case Study

Abstract Objective Early onset of atypical Alzheimer’s disease (ad) can be challenging to identify, especially in highly educated individuals. Protein deposits in neural areas other than the medial temporal lobe can be associated with a heterogeneous neurocognitive pattern. We present a case that highlights the value of biomarker studies in these individuals. Method A 67-year-old, right-handed female with 18 years of education presented with inefficient word retrieval and mental set loss, which emerged approximately two to three years prior. Symptoms worsened in the context of gabapentin use status post lung cancer resection without return to baseline with steady progression. Remaining medical history includes a 1.4 cm right parietal falcine meningioma, hyperlipidemia, and depression. Results In the context of high average premorbid functioning, challenges included complex executive functioning, subtle visuospatial deficits, and encoding and recall inefficiencies. Naming was low average. Neuroimaging revealed mild parietal and dorsal frontal atrophy, potentially age-appropriate, with no significant hippocampal atrophy. Conclusions The present case highlights the possibility of atypical protein deposits and neurocognitive pattern in a highly educated individual with the potential of an early onset ad process. The value of biomarkers and neuropsychological nuances will be of increasing relevance in the context of emerging amyloid therapies.

Evidence from aphasia suggests a bidirectional relationship between inner speech and executive function

Research over the past several decades has revealed that non-linguistic cognitive impairments can appear alongside language deficits in individuals with aphasia. One vulnerable cognitive domain is executive function, an umbrella term for the higher-level cognitive processes that allow us to direct our behavior towards a goal. Studies in healthy adults reveal that executive function abilities are supported by inner speech, the ability to use language silently in one's head. Therefore, inner speech may mediate the connection between language and executive function deficits in individuals with aphasia. Here, we investigated whether inner speech ability may link language and cognitive impairments in 59 adults with chronic, post-stroke aphasia. We used two approaches to measure inner speech: one based on internal retrieval of words and one based on internal retrieval plus silent manipulation of the retrieved phonological forms. Then, we examined relationships between these two approaches to measuring inner speech and five aspects of executive function ability: response inhibition, conflict monitoring/resolution, general task-switching ability, phonological control, and semantic control. We also looked for dissociations between inner speech ability and executive function ability. Our results show tentative relationships between inner speech (across multiple measurement approaches) and all aspects of executive function except for response inhibition. We also found evidence for a double dissociation: many participants show intact executive function despite poor inner speech, and vice versa, so neither process is strictly reliant on the other. We suggest that this work provides preliminary evidence of a bidirectional relationship between inner speech and executive function: inner speech supports some aspects of executive function via internal self-cueing and certain aspects of executive function support performance on complex inner speech tasks.

Retrieval practice and word learning in children who are hard of hearing

Purpose Many children who are deaf and hard of hearing (DHH) show poorer auditory word-learning skills than children with typical hearing (TH). The goal of this study was to test the effect of retrieval practice on word learning in children who are hard of hearing (HH). Method Twenty-six TH children and 16 children who are HH completed a speech perception and a vocabulary test, and a rapid word-learning game to learn new words under no retrieval, immediate retrieval, and spaced retrieval conditions. Result Linear mixed-effect models revealed that learning condition and time predicted 48% of the variance in word recognition, and age predicted 15% of word recall variance. We observed no differences in word recognition and recall between TH children and children who are HH. Children learned and remembered more words in the immediate and spaced retrieval practice conditions than in the no retrieval condition. Conclusion Retrieval practice is more effective for word learning and retention than passive exposure (no retrieval). Clinical and educational practices for children who are DHH could combine explicit instruction using targeted exposures and retrieval of new words with naturalistic approaches. Future studies should assess retrieval practice in real-life interventions to inform clinical and educational practices.

Consonant and vowel production in children with cochlear implants: acoustic measures and multiple factor analysis

IntroductionThe acoustic limitations of cochlear implants (CIs) can lead to perceptual limitations and consequently to imprecise phonological representations and production difficulties. The aim of the study is to document the phonological and phonetic skills of children with CIs and their typically hearing peers. Phonetically, three types of segments were targeted, each characterized by contrasting acoustic information: nasal/oral vowels, fricative segments, and voiced/voiceless stops.MethodsForty-seven typically hearing children (TH) and 23 children with CIs performed a picture-naming task. Productions were analyzed to obtain phonological measures (percentages of correct phonemes, types of errors), and various acoustic measures were collected to characterize the productions on the three types of segments investigated. Multiple factor analyses were conducted to study productive profiles on the various acoustic measures, and the dimensions were correlated with phonological measures.ResultsThe results showed lower performance in lexical (target word retrieval) and phonological (percentages of correct phonemes) skills among children with CIs (CI group), although with better performances among children exposed to CS. Acoustically, children in the CI group exhibited productions significantly different from those of the TH group in terms of the distinction of fricative consonants, marking nasalization through nasal resonance cues, and in the production of voiceless stops. However, the CI group demonstrated compensatory strategies (lengthening of VOT for voiced stops, marking of nasalization through oropharyngeal configuration cues).ConclusionsThe results indicate that children with CIs are at risk of experiencing difficulties in both phonetic and phonological domains. However, there are opportunities for compensation through the exploitation of acoustic cues better coded by the CI and/or through perceptual means (utilization of visual cues).

The effects of endogenous semantic variables during productive lexical retrieval: A Behavioral-Neural Dual Swinging Model (DSM)

Conceptual preparation is the very initial step in language production. Endogenous semantic variables, reflecting the inherent semantic properties of concepts, could influence the productive lexical retrieval by modulating both conceptual activation and lexical selection. Yet, empirical understandings on this process and underlying mechanisms remain limited. Here, inspired by previous theoretical models and preliminary findings, we proposed a Behavioral-Neural Dual Swinging Model (DSM), revealing the swinging process between conceptual facilitation and lexical interference and extending to neural resource allocation during these processes. To further test the model, we examined the joint effect of semantic richness and semantic density on productive word retrieval both behaviorally and neurally, using a picture naming paradigm. Results nicely support the DSM by showing that the productive retrieval is driven by the swinging between semantic richness-induced conceptual facilitation primarily managed in semantic-related regions and semantic density-induced lexical interference managed in control-related regions. Moreover, the conceptual facilitation accumulated from semantic richness plays a decisive role, mitigating interference from competitors as well as the neural demands in control-related regions.

Assessing Relative Linguistic Impairment With Model-Based Item Selection.

A picture naming test is presented that reveals impairment to specific mechanisms involved in the naming process, using accuracy scores on curated item sets. A series of psychometric validation experiments are reported. Using a computational model that enables estimation of item difficulty at the lexical and sublexical stages of word retrieval, two complimentary sets of items were constructed that challenge the respective psycholinguistic levels of representation. The difference in accuracy between these item sets yields the relative linguistic impairment (RLI) score. In a cohort of 91 people with chronic left-hemisphere stroke who enrolled in a clinical trial for anomia, we assessed psychometric properties of the RLI score and then used the new scale to make predictions about other language behaviors, lesion distributions, and functional activation during naming. RLI scores had adequate psychometric properties for clinical significance. RLI scores contained predictive information about spontaneous speech fluency, over and above accuracy. A dissociation was observed between performance on the RLI item sets and performance on the subtests of an independent language battery. Sublexical RLI was significantly associated with apraxia of speech and with lesions encompassing perisylvian regions, while lexical RLI was associated with lesions to deep white matter. The RLI construct was reflected in functional brain activity during naming, independent of overall accuracy, with a respective shift of activation between dorsal and ventral networks responsible for different aspects of word retrieval. The RLI assessment satisfies the psychometric requirements to serve as a useful clinical measure.

Emotional valence promotes free recall of foreign language words after video exposure

AbstractThe effect of emotional valence in word retrieval is well‐established in native languages, but findings in a foreign language remain inconsistent. This study investigated the impact of emotional valence on free word recall in English as a foreign language after video exposure. Participants were upper‐intermediate English speakers with Spanish as their mother tongue who watched eight emotionally valenced and four neutral videos, followed by an immediate free recall task and a delayed recall task after 2 weeks. Generalized linear mixed models showed that word valence influenced recall, with neutral words being less easily recalled than negative words, and a decline in recall between sessions. These findings support the Motivated Attention Account, which suggests that motivationally significant stimuli capture more attention than neutral stimuli, regardless of their polarity. Furthermore, the results align with previous evidence in native language research and some studies in foreign language contexts. This study highlights the robust effect of emotional valence on word recall at different time intervals, using authentic input with upper‐intermediate English speakers who have Spanish as their mother tongue and who learned English later in life.

Adaptation and norm determination of the Boston Naming Test for healthy Lebanese adults aged between 50 and 88 years

The Boston Naming Test is a well-known neuropsychological test widely used to evaluate linguistic abilities, encompassing object naming and word retrieval in subjects representing various clinical pathologies. Our study has two main stages: (1) a pilot study aimed at adapting the BNT to the linguistic and cultural particularities of Lebanese society and (2) norm determination for the Lebanese version of the BNT through the analysis of participants’ responses. The primary goal of this study is to develop a Lebanese version of the BNT comprising 60 images adapted to the Lebanese language and culture. This version is based on normative data derived from healthy Lebanese adults aged between 50 and 88 years. The study seeks to assess the influence of age, gender, and education level on the naming performance of participants. In the pilot study, 103 Lebanese volunteers participated, while the normative study involved 280 healthy volunteers aged between 50 and 88 years. Three screening tests—Montreal Cognitive Assessment (MOCA), Language Experience and Proficiency Questionnaire (LEAP-Q), and Geriatric Depression Scale 15-item (GDS)—were administered to select participants meeting inclusion criteria. The findings revealed a statistically significant effect of age and education level on the BNT (Lebanese version) total score. The total score decreased with age and increased with education. However, the effect of gender was not significant, a result confirmed by the generalized linear model. This study successfully produced a Lebanese version of the BNT comparable to the original English version. Additionally, it provided normative data crucial for evaluating naming ability, word retrieval, and detecting potential disorders associated with aging.

AENet: Image Retrieval of Kazakh Handwritten Documents Based on Attention Mechanism and Feature Aggregation

Kazakh is one of the multilingual languages of China and is widely spoken in some areas of Xinjiang, China. However, due to the fact that Kazakh is a language in which several characters are glued together to form a continuous word with a unique shape and complex structural combinations of relationships. This paper explores a solution for offline image retrieval of handwritten Kazakh words, which is a challenging task because, due to the lack of relevant datasets and the special writing morphology of the Kazakh language, traditional text image retrieval algorithms often struggle to achieve satisfactory results when dealing with writing styles that are varied and adherent to the language. Therefore, a dataset of offline Kazakh handwritten document images was created in this paper. The dataset contains 300 pages of document images with 20 500 words. Then, a new model called the ‘AENet’ is proposed. The model utilizes an attention mechanism to focus more finely on focal regions such as centers, inflection points, and contours of handwritten word images and to capture important local features from different scales. Fusion space pyramid pooling, feature aggregation, encoding operations, and feature downscaling and reconstruction are used to extract and reconstruct more representative feature representations from local to global to capture the overall information in the word images. Through experimental evaluation on Kazak‐80, Zilla‐64, and HWDB1.1‐375 datasets, it is verified that the method significantly improves the mAP for image retrieval of handwritten words, which is especially applicable to adhesive languages like Kazakh. © 2024 Institute of Electrical Engineers of Japan and Wiley Periodicals LLC.

Lexical cues and discourse integration: An ERP study of the N400 and P600 components

In a sentence reading ERP study in Swedish we investigated the roles of the N400 and P600 components. By manipulating ease of lexical retrieval and discourse integration of the critical words in four conditions (contextually primed/non-primed and degree of contextual fit), we explored these components from a sentence processing perspective. The results indicate that the N400 indexes lexical retrieval and access of stored conceptual knowledge, whereas the P600 component indexes pragmatic processes, such as integration of a word into the discourse context, or the information structural status of the word. The results support single-stream models of sentence processing where lexical retrieval and integration do not take place in parallel, as in multi-stream models.

Repetitive Transcranial Magnetic Stimulation for Action Naming in Aphasia Rehabilitation: A Systematic Review and Meta-Analysis.

Anomia, characterized by difficulty in word retrieval, particularly action verbs, poses a significant challenge in post-stroke aphasia. Repetitive transcranial magnetic stimulation (rTMS) has gained attention for language processing investigations and interventions. This systematic review explores the potential of rTMS as a modality to address action-verb deficits in post-stroke aphasia. We searched MEDLINE via PubMed, CINAHL via Ebsco and Web of Science in February 2024 for English articles (1996-2024). Eligible studies involved post-stroke aphasia action naming rehabilitation with rTMS. In some of these studies, rTMS was combined with speech-language therapy. In total, 10 studies were included in this systematic review. These articles highlight the potential of rTMS in improving verb retrieval deficits. While significant improvements may not be evident, notable progress both before and after intervention is observed in this review. However, it also underscores the need for further research to enhance language recovery for individuals with post-stroke aphasia.

Revisiting the automatic prediction of lexical errors in Mandarin

Abstract Speech errors provide cues for explaining the process of word retrieval. For example, speech errors are less likely to occur with high-frequency words since these words already receive a high level of activation. The current analysis further develops existing findings in two ways. First, instead of considering the overall frequency of the words in the entire corpora, we consider the gap in frequency between sequential pairs of words. We hypothesize that speech errors are more likely to occur if the target has a much lower frequency than its preceding word. Second, we use word embedding methods to quantify the semantic distance between sequential pairs of words. We hypothesize that speech errors are more likely to occur with words that have a large semantic distance from their preceding context. We also consider the potential effects of phonetic distance between sequential pairs of words and position-in-utterance of words in utterances. The results from a Mandarin corpus of speech errors show that word frequency and semantic distance between sequential pairs of words can be used to predict the occurrence of speech errors with an accuracy above the majority baseline.

Serial and strategic memory processes in younger and older adults

ABSTRACT We investigated age-related differences in serial and strategic processing during the encoding and retrieval of high-value words. Younger and older adults were presented with word triads positioned left, center, and right, with one word being more valuable than the others. In Experiment 1, younger adults more effectively recalled the middle, high-value word, demonstrating enhanced strategic memory. Younger adults were more likely to initiate recall with a high-value word whereas older adults were equally likely to initiate recall with a left and high-value word. Additionally, older adults were more likely to recall words in their presented order while younger adults strategically recalled successive high-value words. However, both age groups demonstrated strategic processing in Experiments 2 and 3, even without prior knowledge of the high-value word’s location. Thus, serial and strategic processing may differ based on age and task demands, but strategic processing is preserved in older adults in certain contexts.