Search Results (1,275)

Background: Problematic overstudying has been conceptualized as an addictive behavior (study addiction) and an early form of work addiction. The majority of students showing compulsive studying behaviors experience chronic and high stress and symptoms of generalized anxiety disorder. Caffeine is a widely used stimulant that enhances alertness and cognitive performance, especially under fatigue. University students, particularly those exhibiting problematic overstudying, may consume more caffeine to improve academic performance. Previous research has shown that caffeine consumption is positively associated with perceived stress and anxiety. This study examined the mediating role of caffeine consumption in the relationship between problematic overstudying and psychological distress (perceived stress, anxiety, and depression) among university students. Methods: Sample 1 consisted of 436 university students, and Sample 2 included 3421 students. The Bergen Study Addiction Scale, Perceived Stress Scale-4, and a measure of average daily caffeine consumption were used. Results: Results showed that caffeine consumption partially mediated the relationship between problematic overstudying and perceived stress. Students who study compulsively tended to consume more caffeine, which was, in turn, associated with higher perceived stress. This finding was replicated across both samples, and in the second, larger sample, caffeine intake also mediated between problematic overstudying and anxiety and depression. Conclusions: Excessive caffeine use among students who manifest problematic overstudying may increase their risk of developing, or aggravate existing, symptoms of anxiety or mood disorders. Limiting caffeine intake and promoting healthy alternatives, such as rest and recovery, is recommended to support mental health in this population. Full article

Background/Objectives: There is increasing interest within cognitive neuro-surgery in preserving domains not traditionally assessed during awake surgery. The study aims at proposing a specific protocol to assist surgical resection in right temporal areas. Patients were not evaluated during direct cortical stimulation; instead, assessments occurred during the resection itself. The real-time neuropsychological testing (RTNT) protocol employed tasks evaluating visuospatial and social cognition, administered repeatedly throughout the resection using varied items. Methods: A consecutive series of 24 patients (median age 44) performed RTNT. The aim of RTNT is to maintain high accuracy through resection. Lesions in the right temporal cortex and the subcortical white matter beneath can cause deficits; accordingly, not all of our patients had pre-surgery performance within the normal range. In this case, the aim of RTNT is to maintain the not perfect pre-surgery level. Results: We found a statistically significant between-tasks difference in the patients’ median values (across RTNT runs), in their minimum score reached during resection, and in the delta between performance at the last vs. the first RTNT run. The tasks that varied belonged to visual–spatial attention (landmark task), face processing (recognition of famous faces), and social cognition (theory of mind). The outcome was measured by pre- vs. post-surgery neuropsychological score comparison. The number of patients scoring below the normal range did not significantly differ between post- vs. pre-intervention. Conclusions: Results demonstrated the feasibility of implementing a continuous monitoring protocol during the resection phase, and the potential of the selected tasks to assess visuospatial and social functions associated with the non-dominant (right) hemisphere. Full article

Transcutaneous auricular vagus nerve stimulation (taVNS), an emerging noninvasive neuromodulation technique, has shown promise for improving memory. A better understanding of the epigenetic mechanisms underlying the effects of taVNS would inform the molecular outcomes essential for memory and cognition. In this review, we synthesize the current literature on the neurophysiological and biochemical basis of taVNS. Next, we explore how DNA methylation regulators (e.g., DNA methyltransferase 3a) and readers (e.g., methyl-CpG binding protein 2) differentially regulate memory, and how their activity and expression can be regulated by neuronal activity. Finally, we describe the potential involvement of DNA methylation in mediating the memory regulatory effects of taVNS and discuss possible directions for future studies. Full article

Background/Objective: The use of immersive virtual reality (VR) for cognitive training in older adults has shown promising results in recent years. However, the number of well-designed studies remains limited, and variability in methodologies makes it difficult to draw generalizable conclusions. This systematic review aims to examine the effects of VR-based cognitive training in older adults, describe the technological characteristics of these interventions, identify current gaps in the literature, and suggest future research directions. Methods: Following PRISMA guidelines, a search was conducted across major databases (PubMed, PsycINFO, Scopus, ProQuest, ACM, and Web of Science) from 2018 to 2025. The database search identified 156 studies, of which 12 met the inclusion criteria after screening and eligibility assessment. Across these studies, a total of 3202 older adult participants (aged 60 years or older) were included. Interventions varied in duration from 4 to 36 sessions, targeting domains such as memory, executive function, attention, and global cognition. Most interventions were based on cognitive training, with a few employing cognitive stimulation or cognitive rehabilitation approaches. Quality was assessed using the Effective Public Health Practice Project tool. Results: Most studies reported positive effects of VR interventions on cognitive domains such as attention, executive functions, and global cognition. Fewer studies showed improvements in memory. The majority used head-mounted displays connected to computers and custom-built software, often without public access. Sample sizes were generally small, and blinding procedures were often unclear. The average methodological quality was moderate. Conclusions: Immersive VR has potential as an effective tool for cognitive training in older adults. Future research should include larger randomized controlled trials, long-term follow-up, standardized intervention protocols, and the development of accessible software to enable replication and broader application in clinical and community settings. Full article

Background: Emotion regulation (ER) plays a vital role in mental health, spanning mood, anxiety, and personality disorders. Cognitive reappraisal (CR) is one of the most common ER strategies and depends on prefrontal brain areas, but its success varies, and its neural basis is not fully clear. Interest is growing in using transcranial direct current stimulation (tDCS) to support ER, yet most studies have focused only on the dorsolateral prefrontal cortex (dlPFC) and used simple tasks. Objective: This study explored whether tDCS applied to either the dlPFC or the ventromedial prefrontal cortex (vmPFC) could shape autonomic responses during CR while people watched emotionally engaging film clips. Methods: Participants were randomly assigned to receive either active or sham tDCS over the dlPFC or vmPFC. While stimulated, they used CR strategies (positive reappraisal, fictional reappraisal, or distancing) to manage their reactions to negative film scenes. Heart rate (HR), skin conductance (SC), and respiratory rate (RR) were tracked throughout as physiological indicators. Results: Active dlPFC tDCS combined with CR led to significantly greater reductions in HR toward the end of emotional exposure, compared to sham or non-CR conditions. dlPFC stimulation also lowered HR even without explicit CR, pointing to possible effects on automatic regulation. vmPFC effects were inconsistent, and no reliable effects were observed for SC or RR. Conclusions: These results suggest that tDCS effects on autonomic ER depend on the brain region and timing. dlPFC stimulation may strengthen both intentional and automatic emotion regulation, especially when combined with reappraisal, highlighting the value of realistic emotional tasks in neuromodulation studies. Full article

Background: Older adults with mild cognitive impairment are at increased risk for physical decline and falls due to decreased strength, flexibility, balance, and gait. Dance-based aerobic training has emerged as a promising and enjoyable intervention to promote physical function and cognitive stimulation. This study aimed to evaluate the efficacy of a 12-week structured dance-based aerobic program, based on line dancing and Latin rhythms (e.g., salsa, merengue, and bachata), in improving functional capacity and reducing the risk of falls in older adults with mild cognitive impairment. Methods: A randomized controlled trial was conducted with 92 participants aged ≥65 years diagnosed with mild cognitive impairment. The participants were randomly assigned to an experimental group (dance-based training, twice weekly for 12 weeks) or a control group (usual activity). Outcomes included muscle strength (grip dynamometry), flexibility (back scratch and chair sit-and-reach tests), gait speed (Timed Up and Go test), balance (Tinetti scale), and total falls risk score (Tinetti). Mixed ANOVA and Cohen’s d were used for statistical analysis. Results: Significant improvements were observed in the experimental group on all variables compared to the control group. Muscle strength (p < 0.001, d = 0.86), gait speed (p = 0.026, d = 0.48), and upper and lower extremity flexibility (d = 0.43–0.79) improved significantly. The balance and gait components of the Tinetti scale also increased (p = 0.007 and p = 0.048, respectively), as did the total Tinetti score (p = 0.002, d = 0.67), indicating a reduction in the risk of falls. Conclusions: These findings suggest that, under structured conditions, dance-based aerobic training may serve as a promising non-pharmacological strategy to support healthy aging in older adults with mild cognitive impairment, although further validation in larger cohorts is needed. Full article

Background: Alzheimer’s disease is a progressive neurodegenerative disorder characterized by cognitive decline and memory loss. Gamma (γ) oscillations are closely linked to learning and memory, and recent interest has grown around Gamma ENtrainment Using Sensory stimulation (GENUS) as a non-invasive neuromodulation strategy. However, the therapeutic impact of vibrotactile gamma stimulation under varying physical parameters such as acceleration remains underexplored. Methods: Differentiated SH-SY5Y cells were treated with amyloid-β (Aβ) and exposed to vibrotactile stimulation at 2.2 or 4.0 m/s². In vivo, male C57BL/6N mice (7 weeks old, 35 g) were administered scopolamine to induce neurotoxicity and randomly assigned to sham, scopolamine, donepezil, or vibrotactile stimulation groups (n = 10 each). Behavioral tests, biochemical assays, Western blotting, and immunohistochemistry were performed to evaluate cognitive function, oxidative stress, cholinergic activity, synaptic plasticity, and neuroinflammation. Results: In vitro, SH-SY5Y cells exposed to amyloid-beta (Aβ) were treated with vibrotactile stimulation, resulting in enhanced neuronal marker expression at 2.2 m/s². In vivo, mice receiving stimulation at 2.2 m/s² showed improved cognitive performance, reduced oxidative stress, restored cholinergic function, suppressed neuroinflammation, and enhanced synaptic plasticity. Mechanistically, these effects were associated with activation of the AKT/GSK3β/β-catenin pathway. Conclusions: Our findings demonstrate that vibrotactile gamma stimulation at 2.2 m/s² exerts greater therapeutic efficacy than higher acceleration, highlighting the importance of optimizing stimulation parameters. This work supports the potential of acceleration-tuned, non-invasive GENUS-based therapies as effective strategies for cognitive recovery in neurodegenerative conditions. Full article

This study aimed to determine whether vagus nerve stimulation is effective in modulating psychological states such as anxiety, depression, and stress in elite shooters. A total of 18 female elite shooters (aged 18–19 years) were randomly assigned to either an experimental group (n = 9) or a control group (n = 9). The experimental group received vagus nerve stimulation for 30 min per session, once daily, seven days a week, over a period of four weeks. Psychological variables were assessed at three time points: pre-test (baseline), mid-test (2 weeks), and post-test (4 weeks). Two-way repeated measures ANOVA revealed significant group × time interactions for stress (p < 0.01), cognitive anxiety (p < 0.001), somatic anxiety (p < 0.01), confidence (p < 0.001), and depression (p < 0.01). Paired t-tests demonstrated significant reductions in stress, cognitive anxiety, somatic anxiety, and depression, as well as a significant increase in confidence within the experimental group. These findings provide compelling evidence that a 4-week course of vagus nerve stimulation can reduce stress, anxiety, and depression while enhancing confidence in elite shooters. Therefore, this intervention may serve as a beneficial strategy for improving mental health in elite shooters. Full article

Apolipoprotein A-I (apoA-I)-coated nanoemulsion particles target scavenger receptors. Adsorbed apoA-I (from the bloodstream) mediates/facilitates this targeted molecular contact, which is followed by receptor-mediated endocytosis and subsequent transcytosis of these same nanoemulsion (nanocarrier) particles across the blood–brain barrier (BBB). When the right drugs are added in advance to these high-density lipoprotein (HDL)-like nanocarriers, multifunctional combination treatment is achieved. This medication penetrates the BBB and targets particular cell-surface scavenger receptors, mainly class B type I (SR-BI). As a result, these (drug-carrying) nanoemulsions may find application in the biomedical therapy of complex medical disorders, such as dementia, as well as some aspects of aging. According to recent research, sustained inflammatory stimulation in the gut, such as via serum amyloid A (SAA), may cause the release of proinflammatory cytokines. Thus, using this “HDL-like” nanoemulsion vehicle to target drugs early (or even proactively) toward a major SAA receptor (like SR-BI), which is implicated in SAA-mediated cell-signaling processes that lead to aging and/or cognitive decline (and eventually Alzheimer’s disease or dementia), may be a useful preventive and therapeutic strategy. Full article

Background/Objectives: Multidisciplinary approaches spanning the physical, cognitive, and social domains of geriatric evaluation are essential to promote functional well-being and reduce the aversive consequences of aging. The main objective of the pilot study, “Multidomain Interventions to improve the COgnitive and fUNctional well-being of elderly individuals in residential sTructures” (I-COUNT), is to assess the feasibility of a 6-month multidomain intervention performed on older adults in Long-Term Care Facilities (LTCFs), compared with a group of residents following a traditional care approach. Methods: The intervention will involve two LTCFs in Italy and will include physical exercise and cognitive training, administered and monitored using wearable technologies, a nutritional program based on the Mediterranean diet enriched with selected functional foods, and the administration of the vaccinations recommended in the national vaccination plan. The I-COUNT study will assess the feasibility and acceptability of the defined protocol and provide information to determine the sample size for a definitive study. In relation to the potential health impact of multidomain interventions on older people living in LTCFs, the primary outcome will consider the change in microbiota composition assessed 3 months after the start of interventions, while secondary outcomes will include the evaluation of changes in selected biomarkers, physical performance, psychological health, cognitive functioning, and nutritional status at 6- and 9-month follow-up points. Conclusions: The I-COUNT study will allow us to assess the feasibility of delivering a multidomain intervention on elderly people. Exploratory findings on potential health effect will support the development of a larger-scale randomized controlled trial. Trial registration number: ClinicalTrials.gov ID NCT06820710. Full article

Background/Objectives: Perilla frutescens var. acuta Kudo, a member of the Lamiaceae family, has been previously reported to reduce neuroinflammation and potentially decrease Aβ plaque accumulation in 5XFAD mice. In this study, we aimed to evaluate the anti-neuroinflammatory potential of a standardized 60% ethanol extract of Perilla leaves (PE), optimized for commercial application. Methods: The inflammatory response was assessed in LPS-stimulated BV2 microglial cells, and the cognitive improvement was evaluated in an AD animal model induced by intracerebroventricular injection of Aβ. Results: Using LPS-stimulated BV2 microglial cells and an Aβ-injected ICR mouse model of Alzheimer’s disease, we found that PE significantly suppressed the LPS-induced production of nitric oxide and pro-inflammatory mediators, including IL-6, TNF-α, NF-κB, iNOS, and COX-2, along with inhibition of JNK and p38 MAPK activation. Furthermore, PE upregulated CREB and BDNF expression. In vivo, PE administration alleviated Aβ-induced cognitive deficits, which were associated with reduced expression of JNK, NF-κB, iNOS, and COX and increased CREB/BDNF signaling in the hippocampus. Behavioral assessments—including passive avoidance, Morris water maze, novel object recognition, and Y-maze tests—confirmed the improvement in cognitive function. Conclusions: Collectively, these findings demonstrate that PE exerts significant anti-neuroinflammatory and neuroprotective effects, supporting its potential as a functional ingredient for cognitive enhancement. Full article

Attention Deficit Hyperactivity Disorder (ADHD) is a lifelong condition; however, traditional treatment focuses on hyperactivity and inattention, which is largely a manifestation of pediatric ADHD. Studies are limited regarding cognitive difficulties, as seen in adult ADHD, as well as treatment strategies for this population. This review of the literature examines multiple recent studies that discuss various novel treatment strategies for cognitive impairment in adults with ADHD. A targeted literature review was conducted using PubMed to identify recent studies on cognitive dysfunction in adults with ADHD, with an emphasis on emerging treatment strategies. Data collected included sample size, intervention strategies, cognitive function, and side effects. Studies on non-invasive brain stimulation revealed significant effects on executive function in adult ADHD patients. Other studies revealed statistically significant improvements in cognitive flexibility and response inhibition in modafinil users. Another study demonstrated significant improvement in working memory with off label use of viloxazine for adults. This review of the literature describes the effectiveness of novel treatment strategies of adult ADHD including non-stimulant medications, behavioral therapies and neurofeedback. This highlights the need for treatment modalities that enhance cognitive outcomes and further research into long-term efficacy and safety of these novel interventions and implementing psychological treatment into medical management of adult ADHD. Full article

Background/Objectives: Levels of lipopolysaccharide (LPS), arachidonic acid (AA), and advanced glycation end products (AGEs) are higher in the brain of subjects affected by cognitive impairment and Alzheimer’s disease (AD), compared to a healthy brain. Methods: In this narrative review, articles were selected with data on these three key dietary compounds relevant to neuroinflammation and cognitive impairment in order to provide practical dietary advice to reduce the risk of diseases affecting cognition. Results: Triggered by LPS and AGEs in food, inflammatory cytokines can enter the brain and stimulate microglial activation, inflammation, and oxidative damage. AA can elicit neuroinflammation by increasing leukotriene-A4 and prostaglandin-E2 production. Increased levels of neuroinflammation are associated with poorer cognition in AD. Discussion: A dietary reduction of LPS, AA, and AGEs could slow progression and reduce the risk of cognitive impairment and AD by reducing neuroinflammation through several mechanisms. The avoidance of foods that are highest in LPS, AGEs, and AA (dairy products, pork, poultry, beef, and seafood) and the emphasis on foods lowest in LPS, AGEs, and AA (fruits, vegetables, boiled whole grains, beans, raw nuts, and seeds) can reduce neuroinflammation and risk of cognitive impairment and AD. Conclusions: Reduction of chronic neuroinflammation with dietary changes may represent a novel approach to the treatment of AD and cognitive decline. Full article

Dystonia-myoclonus syndrome is a rare neurological condition characterized by involuntary muscle contractions and myoclonic jerks, significantly impairing daily functioning. Pharmacological management is often ineffective, prompting consideration of alternative therapeutic interventions such as deep brain stimulation (DBS). This report describes a novel clinical case involving a 38-year-old female with severe dystonic and myoclonic symptoms associated with a pathogenic mutation in the KCNN2 gene (DYT34). Bilateral DBS targeting the internal segment of the globus pallidus (GPi) resulted in marked and sustained symptom improvement, notably reducing dystonic posturing and myoclonic movements over the 24-month follow-up period. Neuropsychological and neurologopedic assessments revealed no adverse effects on cognition or speech. This represents the first sufficient effect of GPi-DBS in a patient with a genetically confirmed KCNN2 mutation, highlighting its potential efficacy and underscoring the need for genetic testing in patients presenting with dystonia-myoclonus syndromes. Full article

This opinion article aims to highlight the potential mechanisms behind a specific stage of Yoga Nidra (YN) practice, i.e., the formulation and repetition of Sankalpa, encouraging scholars to further study it and providing athletes with suggestions on how to use it for their sport and health. YN can be defined as a meditation practice encompassing a sequence of breathing, guided body awareness, visualization and cognitive restructuring process exercises. According to preliminary results, YN stimulates a hypnagogic state generally associated with improvements in sleep parameters, thus enhancing recovery and health in different populations including athletes. Cognitive restructuring processes can be stimulated by the formulation of Sankalpa, a YN element comparable to positive self-instructions used to counteract dysfunctional cognitions. From a practical standpoint, the formulation of Sankalpa involves expressing an intention that could positively influence body, mind and emotions. For example, Sankalpa might stop or reverse unhealthy thought patterns, resulting in greater mental health. It might also foster intrinsic motivation and enhance emotional intelligence by strengthening mental resilience. In particular, athletes could use Sankalpa as an affirmation to awaken any strength they may feel is necessary to provide them with stress–recovery balance and mental health. However, additional research on this topic is needed to better elucidate Sankalpa’s mechanisms/effects and better integrate its formulation into sport programs. Full article