NeuropsychologiaPub Date : 2026-01-26Epub Date: 2025-10-15DOI: 10.1016/j.neuropsychologia.2025.109295
Alexandra Korzeczek , Nicole E. Neef , Jana Wiechmann , Katharina Hammers , Arno Olthoff , Martin Sommer , Joana Cholin
{"title":"Speech production in stuttering: Impact of syllable frequency and word length on accuracy and fluency","authors":"Alexandra Korzeczek , Nicole E. Neef , Jana Wiechmann , Katharina Hammers , Arno Olthoff , Martin Sommer , Joana Cholin","doi":"10.1016/j.neuropsychologia.2025.109295","DOIUrl":"10.1016/j.neuropsychologia.2025.109295","url":null,"abstract":"<div><div>Developmental stuttering is a neurodevelopmental speech fluency disorder but its causes and underlying mechanisms have not yet been fully understood. Psycholinguistic studies have found lower non-word repetition accuracy in individuals who stutter, which has been proposed to reflect deficits in translating phonological plans into motor programs. At the interface between phonological and phonetic encoding, fluent speakers are thought to benefit from the retrieval of stored preassembled motor programs as evidenced by syllable frequency effects. However, it is unclear whether AWS also benefit from high-frequency syllables during speech production.</div><div>To systematically test phonetic encoding procedures in AWS, we designed a novel pseudoword repetition task with pseudowords of different lengths (2, 3 or 4 syllables) containing either high- or low-frequency first syllables to test for response accuracy and speech fluency in 19 AWS and 19 fluently speaking controls (FC). Results showed an increase in errors in both speaker groups and an increase in stuttering frequency in AWS with longer pseudowords. There was no significant effect of syllable frequency on speech fluency in AWS. However, for response accuracy there was a significant interaction between group and syllable frequency: Whereas FC showed the expected syllable frequency effect on response accuracy with more errors on pseudowords with LF first syllables, AWS produced <em>more</em> errors on pseudowords with high frequency first syllables. Based on Levelt and colleagues’ psycholinguistic model, we interpreted the inverse syllable frequency effect as an indication of a disrupted interplay between the phonetic encoding routines of retrieving and assembling syllable motor programs in AWS whose stored motor programs might be more fragile.</div></div>","PeriodicalId":19279,"journal":{"name":"Neuropsychologia","volume":"220 ","pages":"Article 109295"},"PeriodicalIF":2.0,"publicationDate":"2026-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145313358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
NeuropsychologiaPub Date : 2026-01-26Epub Date: 2025-10-25DOI: 10.1016/j.neuropsychologia.2025.109298
Alexis N. Chargo , Nora E. Fritz , Ana M. Daugherty
{"title":"Spatial maps in the mind: An integrative review of mobility’s role in wayfinding","authors":"Alexis N. Chargo , Nora E. Fritz , Ana M. Daugherty","doi":"10.1016/j.neuropsychologia.2025.109298","DOIUrl":"10.1016/j.neuropsychologia.2025.109298","url":null,"abstract":"<div><div>Spatial navigation is a complex behavior that depends on cognitive wayfinding ability and mobility function, which are vulnerable to decline in aging and neurodegenerative disease. Extant research has largely focused on the cognitive basis of navigation, including exploration of the environment and the subsequent creation of a “cognitive map”. Current theoretical accounts of human spatial navigation ability typically feature mobility function implicit to enacted locomotion, and do not consider the potential for mobility function to modify cognitive wayfinding processes that support navigation. We provide an integrative review of growing evidence that suggests a role of mobility to modify wayfinding that goes beyond locomotion alone. We provide a hypothesized model that includes components of mobility contributing to the development of a cognitive map through exploration and prospective selection of detail based on egocentric cue preference and perceived mobility constraint. In addition, motor planning may inform goal selection, route planning, monitoring and adaptation. We conclude with recommendations on intentional study design with assessments that can be completed in most laboratory settings that have potential for clinical translation with the goal to understand vulnerabilities of real-world navigation and its profound impact on day-to-day living in aging and clinical populations.</div></div>","PeriodicalId":19279,"journal":{"name":"Neuropsychologia","volume":"220 ","pages":"Article 109298"},"PeriodicalIF":2.0,"publicationDate":"2026-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145418869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
NeuropsychologiaPub Date : 2026-01-26Epub Date: 2025-10-06DOI: 10.1016/j.neuropsychologia.2025.109293
Bence Nanay
{"title":"The aphantasia-hyperphantasia spectrum","authors":"Bence Nanay","doi":"10.1016/j.neuropsychologia.2025.109293","DOIUrl":"10.1016/j.neuropsychologia.2025.109293","url":null,"abstract":"<div><div>Research into imagery vividness in recent year has been predominantly about the difference between aphantasics and the rest of us (or, more rarely, between hyperphantasics and the rest of us). But differences in imagery vividness have great impact on a number of important psychological phenomena in non-aphantasics as well. Hence, instead of the binary focus on aphantasics vs. the rest of us, more attention should be devoted to how differences along the aphantasia-hyperphantasia spectrum correspond to other gradual differences, in decision-making, emotion-regulation, cravings, mental health issues and so on.</div></div>","PeriodicalId":19279,"journal":{"name":"Neuropsychologia","volume":"220 ","pages":"Article 109293"},"PeriodicalIF":2.0,"publicationDate":"2026-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145252145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
NeuropsychologiaPub Date : 2026-01-26Epub Date: 2025-10-08DOI: 10.1016/j.neuropsychologia.2025.109274
Henry L. Roediger III , Daniel L. Schacter , Fergus I.M. Craik
{"title":"Endel Tulving: An appreciation of his scientific contributions","authors":"Henry L. Roediger III , Daniel L. Schacter , Fergus I.M. Craik","doi":"10.1016/j.neuropsychologia.2025.109274","DOIUrl":"10.1016/j.neuropsychologia.2025.109274","url":null,"abstract":"<div><div>We review Endel Tulving’s primary scientific accomplishments. The first section, by Roediger, covers the period from 1957 to 1975, during which Tulving introduced the concepts and phenomena of subjective organization, the availability and accessibility of memories, the power of retrieval cues, the recognition failure of recallable words, the encoding specificity principle, and the distinction between episodic and semantic memory. In the second section, Schacter describes Tulving’s growing interest in neuropsychology, his studies of amnesic patient K.C., and his involvement in the development of the Unit for Memory Disorders at the University of Toronto. During this time, Tulving introduced the concept of mental time travel and the idea that memory for the past underlies thoughts of the future. In the third section, Craik describes Tulving’s discoveries using brain-imaging techniques, first employing positron emission tomography (PET) and then functional magnetic resonance imaging (fMRI). He describes research that gave rise to Tulving’s idea that encoding of memories relies on the left prefrontal cortex and retrieval of memories on the right prefrontal cortex (the HERA theory, for Hemispheric Encoding Retrieval Asymmetry). Craik also briefly discusses the status of the HERA model and other aspects of Tulving’s work later in his life. We conclude by noting Tulving’s impact on the authors and the field, as well as a selective review of the awards Tulving received for his research.</div></div>","PeriodicalId":19279,"journal":{"name":"Neuropsychologia","volume":"220 ","pages":"Article 109274"},"PeriodicalIF":2.0,"publicationDate":"2026-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145275488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
NeuropsychologiaPub Date : 2026-01-26Epub Date: 2025-10-30DOI: 10.1016/j.neuropsychologia.2025.109311
Sandrine Baselgia, Björn Rasch
{"title":"Temporal dynamics of the influence of pre- or anticipated post-sleep stress on dream content","authors":"Sandrine Baselgia, Björn Rasch","doi":"10.1016/j.neuropsychologia.2025.109311","DOIUrl":"10.1016/j.neuropsychologia.2025.109311","url":null,"abstract":"<div><div>Psychosocial stress induces stress responses at physiological and cognitive levels which disrupt subsequent sleep. A recent study from our group has shown that stress-induced changes are dynamic: stress before sleep led to prolonged sleep latency and changes in the early sleep period, while anticipated post-sleep stress resulted in changes in the late sleep period. A possible explanation is that anticipated stress is spontaneously reactivated during sleep in a dynamic fashion. As reactivations might be linked to dream content, we investigated the influence of anticipated stress vs. pre-sleep stress on dream content in early and late sleep periods. One group of participants performed either a stress or a relaxation task before sleep (pre-sleep group); while another group was informed before sleep that the stress or relaxation task will occur in the morning (post-sleep group). During sleep, they were regularly woken up in the early and late sleep periods and asked about their cognitive activity, while polysomnographic data was recorded. Fifty-five subjects participated and a total of 668 dreams was collected. While there was no difference in the incorporation of threat- and stress-related elements in the dreams, we did find a temporal difference in their emotionality. The threat intensity was influenced in a dynamic manner, with higher impact on early dreams when stress occurred before sleep and higher threat intensity in late dreams when stress was anticipated after sleep. Our results speak for a reactivation of mental activity in temporal proximity to the stressor for some parameters, mainly with impacts on the dream emotionality and length.</div></div>","PeriodicalId":19279,"journal":{"name":"Neuropsychologia","volume":"220 ","pages":"Article 109311"},"PeriodicalIF":2.0,"publicationDate":"2026-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145418271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
NeuropsychologiaPub Date : 2026-01-26Epub Date: 2025-10-17DOI: 10.1016/j.neuropsychologia.2025.109296
Duho Sihn , Min-Ki Kim , Sung-Phil Kim
{"title":"Propagation of infra-slow and slow brain activities in electroencephalogram related to behavioral information processing","authors":"Duho Sihn , Min-Ki Kim , Sung-Phil Kim","doi":"10.1016/j.neuropsychologia.2025.109296","DOIUrl":"10.1016/j.neuropsychologia.2025.109296","url":null,"abstract":"<div><div>The brain-wide propagation of neural excitability manifested in fast (>1 Hz) electroencephalogram (EEG) oscillations is known to play an important role in behavioral information processing. While fluctuations in EEG infra-slow and slow activity (ISA, 0.01–0.1 Hz; SA, 0.1–1 Hz) are also considered to reflect changes in neural excitability, it remains uncertain whether EEG ISA and SA propagate over the brain and whether such propagation relates to behavioral information processing. To investigate this, we analyzed a publicly available EEG dataset recorded during video game play. EEG data were separated into ISA and SA across various frequencies. The local phase gradient method was used to measure the propagation of ISA and SA. First, we observed significant brain-wide propagation in both ISA and SA. Notably, the temporal consistency of ISA propagation was stronger than that of theta and alpha oscillations, underscoring the significance of ISA propagation. Next, we hypothesized that if ISA and SA propagation relates to behavioral information processing, the propagation direction during erroneous behavior would deviate from that during normal behavior. We found from many EEG channels that the propagation direction during erroneous behavior deviated from those during random or normal behavior across all ISA and SA frequencies. Additionally, the number of channels showing this deviation was positively correlated with the behavioral error rate across participants, further supporting our hypothesis. This study suggests that the propagation of neural excitability at infra-slow and slow frequencies may be correlated with behavioral information processing.</div></div>","PeriodicalId":19279,"journal":{"name":"Neuropsychologia","volume":"220 ","pages":"Article 109296"},"PeriodicalIF":2.0,"publicationDate":"2026-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145329704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
NeuropsychologiaPub Date : 2026-01-26Epub Date: 2025-11-19DOI: 10.1016/j.neuropsychologia.2025.109323
Daniel J. Mitchell, Moataz Assem, Alexandra Woolgar
{"title":"Paying attention to John Duncan","authors":"Daniel J. Mitchell, Moataz Assem, Alexandra Woolgar","doi":"10.1016/j.neuropsychologia.2025.109323","DOIUrl":"10.1016/j.neuropsychologia.2025.109323","url":null,"abstract":"","PeriodicalId":19279,"journal":{"name":"Neuropsychologia","volume":"220 ","pages":"Article 109323"},"PeriodicalIF":2.0,"publicationDate":"2026-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145573791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
NeuropsychologiaPub Date : 2026-01-26Epub Date: 2025-10-29DOI: 10.1016/j.neuropsychologia.2025.109307
Adriana R. Miller , Danielle S. Dickson , Rafał Jończyk , Daisy Lei , Gül E. Kremer , Zahed Siddique , Roger E. Beaty , Janet G. van Hell
{"title":"Critical feedback impacts creative ideation and brain oscillations","authors":"Adriana R. Miller , Danielle S. Dickson , Rafał Jończyk , Daisy Lei , Gül E. Kremer , Zahed Siddique , Roger E. Beaty , Janet G. van Hell","doi":"10.1016/j.neuropsychologia.2025.109307","DOIUrl":"10.1016/j.neuropsychologia.2025.109307","url":null,"abstract":"<div><div>Creative thinking is a vital skill for engineers. Prior work suggests that social dynamics—such as critical feedback from a high-authority figure—can influence the ideation process. Yet little is known about the neurocognitive mechanisms through which feedback shapes creative thinking. In this study, engineering students completed a creative ideation task while EEG was recorded. Midway through the experiment, a professor gave the participant either supportive or unsupportive critical feedback on their performance. Supportive feedback was expected to positively influence creativity compared to unsupportive feedback: participants in the supportive feedback condition were predicted to show greater idea originality and fluency after receiving feedback, as well as a greater EEG power increase in the alpha frequency band (8–12 Hz) that is robustly associated with creativity. We found that after receiving feedback—whether supportive or unsupportive—participants produced fewer but more highly original responses and showed increased alpha power. These results indicate that feedback can cause engineers to generate fewer but more original ideas by driving alpha-band activity in the brain. In further analyses, we found decreased beta-band activity before feedback only in the unsupportive condition, possibly reflecting increased cognitive stress and internally directed attention required to adjust performance in the post-feedback phase.</div></div>","PeriodicalId":19279,"journal":{"name":"Neuropsychologia","volume":"220 ","pages":"Article 109307"},"PeriodicalIF":2.0,"publicationDate":"2026-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145418272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
NeuropsychologiaPub Date : 2026-01-26Epub Date: 2025-10-01DOI: 10.1016/j.neuropsychologia.2025.109290
Yasmine Bassil , Anisha Kanukolanu , Emma Funderburg , Thackery Brown , Michael R. Borich
{"title":"Formation of allocentric representations after exposure to a novel, naturalistic, city-like, virtual reality environment","authors":"Yasmine Bassil , Anisha Kanukolanu , Emma Funderburg , Thackery Brown , Michael R. Borich","doi":"10.1016/j.neuropsychologia.2025.109290","DOIUrl":"10.1016/j.neuropsychologia.2025.109290","url":null,"abstract":"<div><div>During human spatial navigation, individuals transform visuospatial information between <em>egocentric</em> (i.e., first-person, viewer-dependent, body-centered) and <em>allocentric</em> (i.e., third-person, viewer-independent, world-centered) representations for optimal understanding of the surrounding environment. To capture reference frame utilization in a laboratory setting, naturalistic, immersive, open-environment settings in virtual reality are used to mimic real-world navigation. However, few studies have paired navigation through immersive environments with robust, standardized, post-session testing of reference frame utilization. Here, a novel, immersive, city-like, naturalistic virtual reality environment (‘<em>NavCity’</em>) was developed and paired with an accompanying <em>NavCity</em> Allocentric Representation Assessment (NARA) to quantify naturalistic navigation ability and effects of repeated environmental exposure on the formation of allocentric reference frames within a singular experimental session. The <em>NavCity</em> task provides an open-source, standardized, editable, accessible, virtual reality paradigm for assessing naturalistic navigation ability, and the accompanying NARA serves to promote standardization of measures aiming to quantify allocentric knowledge recall. Our central hypothesis is that we will observe within-session improvement in navigation performance after repeated <em>NavCity</em> exposure, which will scale with stronger recall of allocentric representations. Results support this hypothesis and show that within-session <em>NavCity</em> improvements are associated with the assessment of formed allocentric representations tied to the navigated environment. Importantly, this study addresses the need for standardized assessments that measure transformations of first-person, egocentric navigation experiences to third-person, allocentric knowledge using an open-source, naturalistic tool. Immediate next steps are to characterize effects of aging on <em>NavCity</em> and NARA performance to provide understanding of aging-related deficits in allocentric reference frame utilization in older adults.</div></div>","PeriodicalId":19279,"journal":{"name":"Neuropsychologia","volume":"220 ","pages":"Article 109290"},"PeriodicalIF":2.0,"publicationDate":"2026-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145225859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
NeuropsychologiaPub Date : 2026-01-26Epub Date: 2025-10-21DOI: 10.1016/j.neuropsychologia.2025.109297
Yaxuan Meng , Sandra Kotzor , Aditi Lahiri
{"title":"Processing trimorphemic words: linearity and internal structure","authors":"Yaxuan Meng , Sandra Kotzor , Aditi Lahiri","doi":"10.1016/j.neuropsychologia.2025.109297","DOIUrl":"10.1016/j.neuropsychologia.2025.109297","url":null,"abstract":"<div><div>The internal structure of trimorphemic words and its potential impact on stem access have not as yet been explored in great depth. The combinatory possibilities of a single stem with two affixes can vary between left-branching <em>unkindness</em> or right-branching <em>unhelpful</em>. The non-linearity of the grouping leads to an obvious query regarding the decomposition of the complex words and the consequences this may have for lexical access of the stems. To address this question, we conducted a cross-modal priming experiment employing a combination of trimorphemic primes and stem targets across four conditions: semantic (<em>indecisive - hesitate</em>), form (<em>extensive - tense</em>), morphological left-branching (e.g. <em>un-kind-ness > kind</em>), and right-branching (e.g. <em>un-help-ful > help</em>). Behavioural results revealed facilitation in both left- and right-branching conditions, whereas no such effect was found in semantic and form conditions. The ERP analysis, however, revealed different patterns between the semantic and morphological conditions. Semantically related primes facilitated the targets, evidenced by an N400 attenuation. The two morphological conditions differed; facilitation effect was not detected in the morphological left-branching condition, whereas right-branching related primes inhibited access to the target, indicated by an increased N400 response compared to control primes. This asymmetry between the two morphological conditions suggests a difference in the speed and ease of lexical access in trimorphemic words which is affected by their internal structure with suffixes being less easily separable from the stem than prefixes.</div></div>","PeriodicalId":19279,"journal":{"name":"Neuropsychologia","volume":"220 ","pages":"Article 109297"},"PeriodicalIF":2.0,"publicationDate":"2026-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145355557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}