WoS İndeksli Yayınlar Koleksiyonu

Bu koleksiyon için kalıcı URI

https://hdl.handle.net/11729/6354

Listeleniyor 1 - 20 / 1638

Effects of laurocerasus officinalis roem (Cherry Laurel) on cognitive function and neurobiochemical pathways in a streptozotocin-induced nontransgenic Alzheimer's disease model
(Multidisciplinary Digital Publishing Institute (MDPI), 2026-03-08) Özsoy, Fulya; Yanar, Karolin; Sayılı, Uğurcan; Atukeren, Pınar; Uzun, Hafize
Background: This study investigated the effects of Laurocerasus officinalis Roem (cherry laurel; CL), a traditionally consumed fruit, on cognitive performance and selected neurobiochemical and metabolic pathways in a nontransgenic streptozotocin (STZ)-induced Alzheimer’s disease (i.c.v. STZ) model and an STZ-induced type 2 diabetes mellitus (T2DM; i.p. STZ) model. Method: Fifty-seven adult male Sprague–Dawley rats were allocated to control, T2DM, and Alzheimer (ALZ) model groups, with subgroup interventions including CL supplementation and, in the T2DM model, metformin as a comparator. Spatial learning and memory were assessed using the Morris Water Maze. Serum and brain tissue levels of GSK3-β, glutathione (GSH), interleukin-1 (IL-1), GLUT4, GLP-1, β-amyloid (Aβ), and acetylcholinesterase (AChE) were quantified. Results: Serum GSK3-β levels did not differ significantly between groups, whereas brain tissue GSK3-β showed significant between-group differences. CL increased GSH levels in both models, with significant elevations in serum and brain tissue GSH in the ALZ model following CL administration; in the T2DM model, GSH increased after both CL and metformin. In the ALZ model, CL was associated with decreased serum Aβ and AChE levels and improved Morris Water Maze performance, reflected by reduced escape latencies. Conclusions: CL supplementation was associated with antioxidant enhancement and modulation of amyloid- and cholinergic-related measures, alongside improved spatial learning performance in the STZ-induced nontransgenic ALZ model. In addition, CL reduced blood glucose in the T2DM model. Given the likely contribution of fruit phytochemicals (including total phenolics), further studies are warranted to better define the bioactive composition and mechanisms underlying these effects.
Development and validation of a short form of the mentalization scale (MentS-11)\: an evidence-based measure for Turkish adults
(Springer Science and Business Media Deutschland GmbH, 2026-03-03) Ünver, Buket
This study aimed to create a brief Turkish version of the Mentalization Scale (MentS-11) and to evaluate its reliability and validity in a large community sample. Turkish-speaking adults (N = 953) completed the original 25-item MentS, the Interactive Mentalization Questionnaire, and the Interpersonal Neurobiology–Based Prefrontal Cortex Functions Scale. Scale reduction combined exploratory and confirmatory factor analyses with graded-response item response theory. A three-factor solution—Self-related Mentalization (4 items), Other-related Mentalization (4 items), and Motivation to Mentalize (3 items)—displayed acceptable fit (CFI = 0.92, RMSEA = 0.08). Item-response analyses yielded strong discrimination (α = 0.93–2.07) and thresholds spanning the full latent range. Reliability was McDonald’s ωₜ = 0.84 for the total score, 0.81 for Other, 0.77 for Self, and 0.60 for Motivation. Scores on the MentS-11 were nearly identical to those on the 25-item form for the total scale (r =.92) and strongly aligned on their respective subscales (r =.72–0.81). Expected links with external measures confirmed convergent and criterion validity. The MentS-11 retains the theoretical scope and psychometric integrity of the original Turkish scale while halving administration time, making it a practical, time-efficient tool for assessing mentalization in both clinical practice and research.
The Killing magnetic curves in the anti-de Sitter space H31
(TUBITAK, 2026-03-10) Dursun, Uğur
In this paper, we study space-like, time-like and light-like Killing magnetic curves derived from Killing magnetic vector fields of the anti-de Sitter space H31 by using the half-space model H31 of H31 . We find the first integrals of the system of nonlinear differential equations that describe the Killing magnetic curves corresponding to some Killing vector fields of H31 , and then we give some particular solutions to obtain space-like, time-like and light-like magnetic curves of H31 . Also, we calculate the curvature and torsion of some space-like and time-like Killing magnetic curves, and the torsion of light-like Killing magnetic curves of H31.
Infrequent rebalancing, risk deferral, and equity returns at the turn of the month
(Elsevier Ltd, 2026-03-13) Kayaçetin, Nuri Volkan
We examine equity returns at the turn of the month using return data from thirty countries over the thirty-year period from January 1, 1994, to December 31, 2023. Our analysis reveals that the mean daily return on trading days surrounding the end of the month is significantly larger at 10 bps across the markets examined as compared to 0 bps on other days, with a narrow window bracketing month-ends accounting for all or nearly all positive mean return in each of the countries examined. Linking this pattern to the interaction between slow moving institutional capital and market frictions, we provide evidence in line with the idea that the observed pattern might be sustained by a dual-channel mechanism. First, the effect appears to be amplified hierarchically due to overlapping rebalancing mandates, peaking at lower frequencies due to the synchronization of a larger number of rebalancing schedules. Second, and more importantly, the effect also seems to be conditioned by the deferral of risky investments to structured rebalancing nodes during periods of market distress. Consistent with this mechanism, its magnitude is significantly larger after periods of market turbulence and during recessions, when investors are likely to store more cash in safe assets. Our findings thus provide a robust economic framework for understanding the enduring presence of the turn-of-the-month effect, suggesting that it may emerge as a joint consequence of infrequent rebalancing and risk deferral.
From policy to practice: a sector-agnostic operational framework for post-quantum cryptography transition
(Institute of Electrical and Electronics Engineers Inc., 2026-03-02) Birgin, Berat; Çeliktaş, Barış
The pace of quantum computing development necessitates not only the adoption of post-quantum cryptographic algorithms, but also the establishment of an executable and auditable institutional transition process. Although guidance documents published by the National Institute of Standards and Technology (NIST) and roadmaps proposed by the Post-Quantum Cryptography Coalition (PQCC) articulate strategic objectives, they largely remain procedural constructs lacking a concrete operational execution model. This paper presents an industry-neutral operational framework that translates policy-level post-quantum cryptography (PQC) guidance into deterministic, proof-producing process flows encompassing cryptographic asset discovery, classification, risk modeling, algorithm selection, deployment, monitoring, and governance enforcement. Central to the framework is a deterministic Quantum Risk Scoring (QRS) function, calibrated using the Analytical Hierarchy Process (AHP), which enables reproducible asset prioritization and policy-driven enforcement decisions. Framework executability is further strengthened through cryptography-aware continuous integration/continuous deployment (CI/CD) validation gates and downgrade protection mechanisms, ensuring the generation of verifiable and immutable audit artifacts. A scenario-based operational validation, implemented using open-source toolchains, demonstrates the framework’s operability, auditability, and governance alignment without relying on empirical cryptographic performance benchmarks, confirming that PQC transition can be operationalized as a verifiable lifecycle process bridging policy guidance with enforceable technical actions. Rather than introducing new cryptographic primitives, this work formalizes PQC transition as an operational systems-engineering problem centered on governance-enforced execution and lifecycle verifiability.
Future circular collider feasibility study report volume 3 civil engineering, implementation and sustainability (vol 234, pg 5113, 2025)
(Springer Science and Business Media Deutschland GmbH, 2025-12) Benedikt, Michael; Zimmermann, Frank; Auchmann, Bernhard; Bayındır, Cihan; Özaydın, Fatih
[No abstract available]
Posterior atrophy is a neuroimaging marker of mild cognitive impairment in Parkinson's disease
(Türk Nöropsikiyatri Derneği, 2026-02-02) Ay, Ulaş; Yıldırım, Zerrin; Kıcik, Ani; Erdoğdu, Emel; Bilgiç, Başar; Hanağası, Haşmet; Öztürk Işık, Esin; Demiralp, Tamer; Gürvit, Hakan
Introduction: Although there are several studies on the neuroanatomical mechanisms underlying Parkinson's disease (PD)-associated cognitive impairment, the clinical usefulness of the findings from these investigations is limited. In this study, we aimed to identify magnetic resonance imaging (MRI) markers that can be practically utilized for diagnosing PD-associated cognitive impairment using a visual rating scale (VRS). Methods: Anatomical MRIs of cognitively normal (PD-CN), and PD with mild cognitive impairment (PD-MCI) patients were visually evaluated for six bilateral cortical regions. Then, hypothesis-driven cortical thickness analysis (CTA) was performed in the regions obtained from VRS. Results: As a consequence of VRS, a significant difference was found between the two groups with regards to right posterior atrophy (PA) scores (pFDR-corr = 0.042, Cohen's d= 1.06). Hypothesis-driven CTA confirmed the result of VRS by revealing cortical thinning at the precuneus and parieto-occipital sulcus junction (Max. T= 6.171, P= 0.0006, MNIx, y,z = 11.0,-62.2, 25.4). The area under the curve was 0.75, showing a good association between the PD-MCI and the right PA score. The cut-off for maximum accuracy was >= 2, based on the highest sum of sensitivity (0.68) and specificity (0.72). Conclusions: Our findings indicate that right PA atrophy may be helpful for clinicians in the diagnosis of PD-associated cognitive impairment.
The strongman vs. the sage? Populist performances and political masculinities in the 2023 Turkish elections
(Routledge, 2026-02) Sayan Cengiz, Feyda; Demiralp, Seda
Authoritarian populist performances are deeply intertwined with particular ways of ‘doing masculinity’. Previous studies have shown that combative, aggressive, ‘rule-breaking’ performances of masculinity enabled populist opposition leaders to enact and perform anti-elite populist discourses, facilitating the mobilisation of discontent. The case of Turkey, a resilient case of authoritarian populism, demonstrates that performances of masculinity also serve incumbent populists to cast themselves as protectors of society, reinvigorate their paternalist claims to legitimacy and amplify the affective dimension of their messages. This dynamic becomes especially prominent during election campaigns, where performances of masculinity become a significant part of the contest between populist incumbents and their opponents. Focusing on Turkey’s 2023 presidential election and the campaigns of the two main contenders–incumbent President Erdoğan and opposition candidate Kılıçdaroğlu–the study argues that authoritarian populist leaders perform combative, aggressive masculinity to project competence even during economic downturns or institutional decay. In doing so, they further masculinise the political sphere, relegating rivals to subordinate positions within a symbolic hierarchy of masculinities and marginalising alternative models of leadership. The study contributes to understanding the gendered performative dimensions that play into the resilience of authoritarian populism.
The mediating effect of self compassion in the relationship between job stress and burnout levels among employees
(SAGE Publications Inc., 2026-02-13) Günay, Ezgi; Ünver, Buket; Yılmaz, Simay
Objective: This study investigates the role of self-compassion as a mediator in the relationship between job stress and burnout among employees. While job stress is widely recognized as a critical factor leading to burnout, it has been suggested that self-compassion may be associated with a reduction in these negative effects. Method: Participants were 429 actively employed adults living in Turkey (50.6% female). The data were gathered using an online administration of standardized psychological scales, that is, Job Stressor Appraisal Scale, Copenhagen Burnout Scale, and Self-Compassion Scale. Four dimensions of work stress “Role and Workload, Role Inadequacy, Organizational Rules & Practices, and Subordinate Relations” are taken into consideration in the volumetric model. Path analysis with bootstrapping (5,000 resamples) was implemented using Mplus statistical software, with gender, economic condition, and way of working during COVID-19 as covariates. Findings: The model fit was acceptable in path analysis. Role and workload and role inadequacy had a significant direct impact on burnout. Self-compassion had a significant mediating impact on the relationship between role and workload and burnout and the relationship between role inadequacy and burnout. Conversely, for organizational rules and practices and subordinate relations, both direct and mediating effects were non-significant. The model accounted for 21% and 52% for variance in self-compassion and burnout, respectively. Conclusion: This study emphasises the mediating role of self-compassion in the effect of job stressors on burnout. These findings suggest that interventions promoting self-compassion in the workplace may be effective in reducing employee burnout.
Witnessing the end, supporting the living: A qualitative study of palliative caregiving in end-of-life patients in Türkiye
(Cambridge University Press, 2026-02-11) Sert Yurdakul, Selin; Erbay Erşen, Merve; Özel, Dilara
Objectives. Palliative care seeks to enhance the quality of life for individuals with serious illnesses and their families by addressing physical, emotional, and psychological needs. This phenomenological study examines the lived experiences of 8 caregivers in palliative care settings in Türkiye, focusing on the challenges they face, the coping mechanisms they employ, and their reflections on the caregiving role. Special emphasis is given to both psychological and somatic signs of stress, along with the possible advantages of body-oriented resilience techniques. Methods. Using a phenomenological qualitative design, semi-structured interviews were conducted with 8 caregivers providing care to relatives in a hospital-based palliative care unit. Data were collected between February and April 2023 and analyzed through conventional content analysis. Results. Four central themes emerged from inductive coding: harmony in healing, navigating difficulties, resilience in palliative care, and reflections on the finite. The findings reveal a dual reality: palliative caregivers derive meaning and satisfaction from compassionate connections, high-quality clinical care, and peer support, yet they also endure significant burdens, including emotional strain, physical exhaustion, disrupted daily routines, and shifting relational dynamics. Anticipatory grief and chronic stress responses were prevalent, frequently manifesting in both psychological and somatic forms (e.g., sleep disturbances, muscle tension, and autonomic arousal). Despite these challenges, palliative caregivers employed spiritual beliefs, peer interactions, and self-care routines as resilience strategies. Significance of results. The mind–body challenges identified in the study emphasize the need for interventions that focus on self-regulation and resilience, including body-oriented approaches that strengthen internal resources, regulate stress responses, and encourage adaptability. Incorporating such approaches into group-based settings may improve mutual support and enhance both individual and relational well-being. The study highlights the importance of comprehensive, caregiver-centered support systems to reduce burden and improve the overall quality of palliative care.
Validation and normative data study for the Turkish version of the movie for the assessment of social cognition (MASC-TR)
(Oxford University Press, 2026-02-05) Şandor, Serra; Hıdıroğlu-Ongun, Ceren; Tanfer, Mehmet Can; Gürkaş, Sena; Bora, Emre; Yıldırım, Elif
Objective This study aimed to adapt the Movie for the Assessment of Social Cognition (MASC) into Turkish (MASC-TR), examine its psychometric properties, and establish normative data. Additionally, the study investigated the discriminative validity of the MASC-TR in differentiating individuals with autism spectrum disorder (ASD) from healthy controls. Methods The sample comprised 228 healthy adults and 29 individuals with ASD aged 18–45 years. Participants completed the MASC-TR along with established measures of theory of mind (ToM)—the Reading the Mind in the Eyes Test (RMET) and the Faux Pas Recognition Test (FPRT)—as well as non-social cognitive tasks assessing attention, working memory, and executive functions. Reliability analyses included internal consistency and test–retest reliability. Construct validity was assessed via convergent and discriminant correlations. Group comparisons and receiver operating characteristic analyses were used to evaluate discriminative validity, while multifactorial analysis of variance and regression analyses examined demographic effects. Results The MASC-TR demonstrated acceptable internal consistency (α=0.75) and excellent test–retest reliability (ICC=0.98). Significant positive correlations with RMET and FPRT supported convergent validity. Education level emerged as the only significant demographic predictor of MASC-TR performance. The MASC-TR successfully differentiated individuals with ASD from controls (t=−3.87, p<.001), with an optimal cutoff of 23.5 yielding 97% sensitivity and 52% specificity (area under the curve=0.72). Conclusions The findings indicate that the MASC-TR is a valid and reliable measure of social cognition in Turkish adults. The availability of culturally adapted normative data enhances its clinical and research utility for assessing ToM functioning across populations.
Hierarchical secure key assignment scheme
(Public Library of Science, 2026-02-18) Çeliktaş, Barış; Çelikbilek, İbrahim; Güzey, Süeda; Özdemir, Enver
This work presents a novel hierarchical key assignment mechanism for access control, designed to be computationally lightweight and optimized for digital environments with structured access policies. By leveraging orthogonal projection and distributing a basis to each group, it enables flexible and efficient left-to-right and top-down access structures. The scheme ensures that parent groups can derive the secret keys of their child groups while preventing unauthorized reverse access. It is resilient against collusion attacks and privilege escalation, offering robust key recovery and indistinguishability properties. Moreover, it guarantees strong key indistinguishability under adversarial models and facilitates a secure rekeying process without reliance on a trusted third party. To demonstrate practical efficiency, we provide a full analytical complexity evaluation showing that key derivation requires at most ∂(n2i ) operations, where ni is the dimension of the assigned subspace. For typical deployment parameters used in the experiments, the total key material per user remains compact (≈ 3,072 bits), significantly smaller than well-known post-quantum schemes such as Dilithium-5 (38,912 bits). The storage requirement scales linearly with the number of groups (ck+1 bases for c groups with at most k members), ensuring that even large hierarchies remain lightweight. Our evaluation further shows that selective rekeying affects only the descendants of the modified group, resulting in communication overhead of ∂(m′λ) bits, where m′ is the number of affected users and λ is the key length. These results collectively highlight the scheme’s scalability, low storage footprint, and suitability for large access hierarchies.
Architects' journeys to Italy and their contribution to architectural culture in postwar-era Turkey
(Cambridge University Press, 2024-12) Hamiloğlu, Ceren; Özsoy, Ahsen
In the twentieth century, the mobility of architects and ideas played an important role in the dissemination of an architecture culture characterised by modernity. Architectural ideas were disseminated through institutions and a variety of visual, verbal, and textual representations as well as physical encounters. Travel, with its associated architectural thinking and representation, became a generative practice through which the dissemination of architecture could be understood. The Grand Tour was one of the most well-studied examples of travel as a rite of passage, and Italy remained a dominant destination long after its peak in the eighteenth century. Italian architectural discourse entered Turkey through travels and publications, mostly in the prewar era. This article aims to show the role of architects’ travels in inducing architectural productions through a variety of representations from sketches to published media, scrutinising Turkish-speaking architects’ journeys to Italy in the postwar era. The study incorporates content analysis of selected media - such as photographs, articles, class notes, books, and memoirs - to review architects’ productions during and after their travels, as they facilitated the dissemination of an architecture culture ‘brought back’ after key experiences.
Energy-based characterization of drilling-induced residual stresses in AA7075-T6
(Multidisciplinary Digital Publishing Institute (MDPI), 2026-01) Tok, Görkem; Dinçer, Ammar Tarık; Bakkal, Mustafa; Kuzu, Ali Taner
This study examines the influence of drilling parameters on thrust force, torque, active work, and axial residual stress formation in hot-forged and T6-treated AA7075, a critical high-strength aluminum alloy. A full factorial design was applied using three spindle speeds (800, 1000, 1200 rpm) and three feed rates (0.05, 0.10, 0.15 mm/rev). Cutting force and torque signals were measured using a dynamometer, and axial residual stresses were determined by X-ray diffraction at two locations along the hole depth, namely, the hole entrance (Point A) and the hole exit (Point B). The results show that feed rate is the dominant factor influencing drilling mechanics and residual stress formation, whereas spindle speed mainly affects the thermal and frictional conditions governing stress relaxation. A consistent asymmetry was observed between the two measurement locations, with the exit side exhibiting stronger stress relaxation behavior associated with breakthrough mechanics. Finally, the relationship between active work and axial residual stress is discussed using a qualitative, energy-based interpretation, highlighting active work as a physically meaningful indicator for drilling-induced residual stress evolution.
Formal thought disorder and familial risk in first-episode psychosis: A study of cortical thickness and neuroimaging-transcriptomic association analysis
(Elsevier Ireland Ltd, 2026-01-16) Çabuk, Tuğçe; Zhang, Yuanchao; Palaniyappan, Lena; Şahin Çevik, Didenur; Avcı, Hanife; Çakmak, Işık Batuhan; Yılmaz Kafalı, Helin; Şenol, Bedirhan; Karlı Oğuz, Kader; Toulopoulou, Timothea
Formal thought disorder (FTD), a prominent feature of schizophrenia, encompasses disruptions in thought, language, and communication. This study examines cortical thickness (CT) alterations in first-episode psychosis (FEP) patients (N = 24), their siblings (SIB) (N = 21), and healthy controls (CON) (N = 21) to explore potential neural correlates of FTD. Using structural MRI, we analyzed whole-brain CT and its relationship with positive and negative FTD measured by Thought and Language Index. Out-of-sample spatial correlations of gene expression with regional CT were also performed using a transcriptomic dataset. FEP had significant CT reductions in right middle frontal gyrus (MFG) compared with SIB and CON and in superior frontal gyrus (SFG) compared to CON; but SIB did not differ from CON. GLM analyses demonstrated that negative FTD exerted a significant main effect on CT in the MFG and SFG. By contrast, positive FTD showed no significant associations with CT. Neuroimaging-transcriptomic association analysis identified key biological pathways linked to cortical morphology. These findings emphasize the specific association between negative FTD and CT alterations in frontal brain regions, confirming prior reports. Future research should examine larger cohorts and investigate additional FTD subtypes to further elucidate neural correlates and potential familial risks of schizophrenia.
Future circular collider feasibility study report: volume 1 physics, experiments, detectors
(Springer Nature, 2025-12) Benedikt, Michael; Zimmermann, Frank; Auchmann, Bernhard; Bartmann, Wolfgang; Burnet, Jean Paul; Bayındır, Cihan
Volume 1 of the FCC Feasibility Report presents an overview of the physics case, experimental programme, and detector concepts for the Future Circular Collider (FCC). This volume outlines how FCC would address some of the most profound open questions in particle physics, from precision studies of the Higgs and EW bosons and of the top quark, to the exploration of physics beyond the Standard Model. The report reviews the experimental opportunities offered by the staged implementation of FCC, beginning with an electron-positron collider (FCC-ee), operating at several centre-of-mass energies, followed by a hadron collider (FCC-hh). Benchmark examples are given of the expected physics performance, in terms of precision and sensitivity to new phenomena, of each collider stage. Detector requirements and conceptual designs for FCC-ee experiments are discussed, as are the specific demands that the physics programme imposes on the accelerator in the domains of the calibration of the collision energy, and the interface region between the accelerator and the detector. The report also highlights advances in detector, software and computing technologies, as well as the theoretical tools/reconstruction techniques that will enable the precision measurements and discovery potential of the FCC experimental programme. The content and structure of this report are guided by the scope and priorities defined in the mandate of the FCC Feasibility Study. It is therefore not intended to serve as an exhaustive review of the full physics potential of FCC. Several topics, already covered in earlier reports such as the FCC CDR, are not reiterated here or are addressed only briefly, in alignment with the study’s focus. This volume reflects the outcome of a global collaborative effort involving hundreds of scientists and institutions, aided by a dedicated community-building coordination, and provides a targeted assessment of the scientific opportunities and experimental foundations of the FCC programme.
TURSpider veri kümesinde Temsilcilerin Karışımı Tabanlı Text-to-SQL çalışması
(IEEE, 2025) Kanburoğlu, Ali Buğra; Tek, Faik Boray
Bu çalışma, Türkçe Text-to-SQL için geliştirilen TURSpider veri kümesi üzerindeki deneyleri ele almaktadır. TURSpider, çeşitli zorluk seviyelerine sahip SQL sorgularını içeren geniş kapsamlı bir Türkçe veri kümesidir ve bu alandaki araştırmalar için önemli bir kaynak niteliğindedir. Çalışmada, geri bildirim odaklı temsilcilerin karışımı yaklaşımının (ing. feedback driven Mixture-of-Agents - MoAF) başarımı incelenmiştir. MoAF yapısında, birden fazla büyük dil modeli (BDM) iş birligi içinde çalışarak SQL oluşturma başarımını artırmayı hedeflemektedir. Bu yapıda temsilci (ing. agent) işbirliği, modellerin birbirinden ögrenmesini ve geri bildirim mekanizmaları aracılığıyla hataların düzeltilmesini sağlamaktadır. Deney sonuçlarına göre, MoAF yaklaşımı ile %60.63 yürütme doğruluğuna ulaşılmış ve TURSpider veri kümesi üzerindeki en iyi sonuç elde edilmiştir.
Effects of transcranial direct current stimulation on inhibition-related oscillatory brain activity during an emotional antisaccade task
(Kare Publishing, 2025-12) Sütçübaşı, Bernis; Küçük, Zeynep; Tarman, Güliz Zeynep; Metin, Barış; Sarı, Berna
Objective: Previous studies have shown that transcranial direct current stimulation (tDCS) applied to the dorsolateral prefrontal cortex (dlPFC) can enhance attentional performance and influence emotional processing. However, the neural mechanisms underlying these effects are not fully understood. This study aimed to investigate oscillatory changes following tDCS over the dlPFC, with the hypothesis that anodal stimulation of the right dlPFC would modulate inhibition-related oscillations in the presence of threatening faces compared with left dlPFC stimulation. Method: Thirty-six healthy participants underwent bilateral tDCS to the dlPFC. One group received anodal tDCS to the right dlPFC and cathodal to the left dlPFC, while the second group received the opposite montage. A control group received sham stimulation. Before and after stimulation, behavioral performance and event-related theta oscillations were recorded during an antisaccade task involving neutral and angry faces. Results: Compared to the left-dlPFC group, the right-dlPFC group showed lower theta responses at F3 after anodal stimulation, particularly during antisaccade trials with angry faces, which are known to impose higher inhibitory demands due to threat salience. No group differences were found in saccade latencies. These findings suggest that anodal right dlPFC stimulation modulates oscillatory activity related to inhibitory control under emotionally salient conditions. Conclusion: A decrease in theta oscillations following anodal tDCS over the right dlPFC may indicate enhanced inhibitory control during the processing of threatening stimuli. These results point to a potential role of dlPFC-targeted tDCS in regulating cognitive control and emotional processing, particularly in individuals with difficulties in these domains. However, the directionality and causality of these effects cannot be conclusively established due to limitations of the current study design.
Theta and Beta1 frequency band values predict dyslexia classification
(John Wiley and Sons Ltd, 2025-12-29) Eroğlu, Günet; Harb, Mhd Raja Abou
Dyslexia, impacting children's reading skills, prompts families to seek cost-effective neurofeedback therapy solutions. Utilising machine learning, we identified predictive factors for dyslexia classification. Employing advanced techniques, we gathered 14-channel Quantitative Electroencephalography (QEEG) data from 200 participants, achieving 99.6% dyslexic classification accuracy through cross-validation. During validation, 48% of dyslexic children's sessions were consistently classified as normal, with a 95% confidence interval of 47.31 to 48.68. Focusing on individuals consistently diagnosed with dyslexia during therapy, we found that dyslexic individuals exhibited higher theta values and lower beta1 values compared to typically developing children. This study pioneers machine learning in predicting dyslexia classification factors, offering valuable insights for families considering neurofeedback therapy investment.
Design of voltage-mode and current-mode PID controllers using a single Add-Differentiate IC (AD-IC)
(Birkhauser, 2025-12-22) Minayi, Elham; Göknar, İzzet Cem
In this paper, voltage and current mode proportional–integral–derivative (PID) controller circuits are presented in one topology, utilizing only a single active component, Add-Differentiate Integrated Circuit (AD-IC) along with two passive resistors and two passive capacitors. The effectiveness and performance of the proposed circuits are validated through sensitivity, non-ideality analyses and PSPICE and MatLab simulations.

Güncel Gönderiler