Vigilant Attention Research Articles

Rewards transiently and automatically enhance sustained attention.

Our ability to maintain a consistent attentional state is essential to many aspects of daily life. Still, despite our best efforts, attention naturally fluctuates between more and less vigilant states. Previous work has shown that offering performance-based rewards or incentives can help to buffer against attentional lapses. However, such work is generally focused on long timescales and, critically, does not dissociate between task-based motivation (i.e., where reward is contingent on attention performance) versus more generic motivation or arousal accounts of reward effects. Here, we investigated the influence of reward feedback on attentional vigilance during a simultaneous sustained attention and reinforcement learning (RL) task. Crucially, rewards were tied only to the RL task rather than to attentional performance. We assessed the impact of two core components of RL-reward and surprise-on short-term fluctuations in attentional vigilance. In two experiments (N = 161), we demonstrated that intermittent, attention-independent rewards transiently boosted vigilance on a timescale of seconds. We did not find consistent evidence that surprises modulated vigilance. In a third experiment (N = 135), we observed that even passively received rewards elicit transient boosts in sustained attention. Together, these findings suggest that rewards transiently buffer against attentional lapses to improve vigilance, likely through generic increases in arousal or motivation. These results point to a fundamental relationship between reward and sustained attention. (PsycInfo Database Record (c) 2025 APA, all rights reserved).

Evening Alpha-Lactalbumin Supplementation Alters Sleep Architecture and Reduces Morning Reaction Time in an Athletically Trained Population With Sleep Difficulties.

Evening consumption of a whey protein rich in the amino acid tryptophan, alpha-lactalbumin (ALAC), has previously shown to benefit sleep-particularly among poor sleepers. Given trained populations often experience sleep difficulty, this study investigated whether evening supplementation of ALAC would influence sleep outcomes, mood, and next-day cognitive performance within a trained population with sleep difficulties. Nineteen trained participants (females, n = 11) with sleep difficulties (Athlete Sleep Screening Questionnaire: 8.1 ± 3.1; Pittsburgh Sleep Quality Index: 10.5 ± 4.1) completed this double-blinded, counterbalanced, randomized, crossover trial. Forty grams of ALAC or control were supplemented 2hr presleep for three consecutive nights in a controlled environment, with sleep measured using dry electroencephalography. Blood samples were taken on the first evening of each experimental trial, with mood, sleepiness, and recovery assessed across the evening and morning. A cognitive testing battery was also completed each morning. During the ALAC condition, the primary findings were that participants had raised plasma tryptophan levels (p < .01), increased nonrapid eye movement Stage 2 sleep duration (CON: 205.9 ± 33.3; ALAC: 216.5 ± 33.1min), reduced rapid eye movement duration (CON: 110.8 ± 27.9; ALAC: 99.7 ± 23.1min), and improved reaction time in cognitive tests involving sensory motor speed, spatial orientation, and vigilant attention (p < .05). Data suggestevening supplementation of 40g ALAC alters sleep architecture and improves next-morning reaction time in trained populations with sleep difficulties. Therefore, trained individuals experiencing sleep difficulty may benefit from acute ALAC supplementation to assist next-day performance. Future research should investigate this effect within habitual environments, outside of a tightly controlled setting.

Primed into security: can attachment security priming affect attachment-related biases on early attention?

ABSTRACT Attachment avoidance is associated with deactivation of the attachment system when distressed, and disengagement from distressing information to maintain felt security. This study investigated how experimentally induced priming to enhance felt security might influence avoidant strategies at an attentional level. In a randomized, mixed design (N=104), we assessed attentional vigilance/disengagement towards contemptuous/neutral facial expressions using a variation of the dot-probe task, considering priming and attachment avoidance and anxiety. Attachment avoidance predicted attentional disengagement from the facial stimuli, particularly in individuals with low anxiety. By contrast, attachment anxiety predicted attentional vigilance regardless of level of avoidance. Task performance improved pre- to post-priming, driven by the neutral priming condition, suggesting that emotionally charged memories in security priming may deplete attentional resources. Priming did not affect highly avoidant individuals, suggesting they may disengage early from the task and remain unaffected by it. Findings highlight the complex interplay between attachment styles and attentional processes.

Associations between cytokine levels and cognitive function among individuals at clinical high risk for psychosis

ObjectiveTo explore the intricate interplay among cytokines, cognitive functioning, and conversion to psychosis in individuals at clinical high-risk (CHR) for psychosis. MethodWe initially enrolled 385 individuals at CHR and 95 healthy controls (HCs). Subsequently, 102 participants at CHR completed the 1-year follow-up assessments, and 47 participants transitioned to psychosis. We assessed the levels of interleukins (IL-1β, IL-2, IL-6, IL-8, IL-10), tumor necrosis factor-α (TNF-α), granulocyte-macrophage colony-stimulating factor (GM-CSF), and vascular endothelial growth factor (VEGF). We comprehensively evaluated cognitive performance across six domains, including speed of processing (SP), attention/vigilance (AV), working memory (WM), verbal learning (VeL), visual learning (ViL), and reasoning and problem-solving (RPS). ResultsHigher baseline cognitive domain scores were associated with elevated GM-CSF and reduced VEGF levels. In the follow-up analysis, significant time effects were observed for IL-1β and IL-2. We also observed significant interaction effects between specific cognitive domains (AV, WM, VeL, and OCS) and levels of cytokine (GM-CSF, IL-1β, IL-6, and TNF-α). Changes in WM were negatively correlated with changes in TNF-α levels and positively correlated with changes in VEGF levels. Variations in VeL were inversely correlated with changes in GM-CSF and IL-10 levels, whereas changes in RPS were positively associated with changes in GM-CSF and IL-8 levels. ConclusionsOur results revealed intricate associations among cytokine levels, cognitive performance, and psychosis progression.

Improving food safety compliance of potential employees through a novel model of knowledge, attitude, commitment, and practice.

The global burden of foodborne illnesses remains high due to consumption of contaminated food. Vigilant attention from all, particularly food handlers, is needed to address food safety concerns and minimize the risks that affect consumer health, international business, and tourism worldwide. The main objectives of this study were to: (i) evaluate the food safety knowledge, attitudes, commitment (involving affective, continuance, and normative types), and practices of students studying subjects related to food sciences in Jordanian universities and (ii) examine the impact of knowledge and attitude on commitment, and subsequently, on relevant practices using structural equation modeling. The questionnaire was completed by 526 students from 5 universities. The score percentages of students in tested categories were as follows: agreement on food safety knowledge (87.7%), attitude (92%), affective commitment (90.4%), continuance commitment (83%), normative commitment (90.3%), and practices (91.5%). The results showed that associations between food safety knowledge and attitude with the three types of commitment were positive and significant (p<0.05). Affective and normative commitments acted as partial mediators between food safety knowledge and practices and between food safety attitude and practices, whereas continuance commitment did not act as a mediator. Furthermore, a moderate correlation was found between food safety knowledge and attitude. Focus on food safety commitment drivers is essential, as commitment plays a key role in achieving actual hygienic practices by translating adequate knowledge and positive attitudes to improvements in hygienic behavior and reductions in the risk of foodborne illnesses.

O007 Menstrual cycle phase classification methods and the relationship with sleep, mood, and performance in elite female athletes

Abstract Introduction Female athletes are often excluded from sports-science research due to hormonal variations across the menstrual cycle. Effects of menstrual cycle phase on outcomes are inconclusive likely due to between-study variation in phase classification. We aimed to test if the relationship between menstrual cycle phase and sleep, mood, and performance differed depending on whether a continuous, 2-phase, 3-phase, or 4-phase approach was used to classify cycle phase. Methods Elite Australian Rules footballers reporting a regular menstrual cycle and not on contraception (N=18, M-age=24.9±5.1) were recruited. Over two weeks, they completed continuous sleep/wake monitoring via actigraphy and sleep diaries, daily self-reported sleep quality, mood, and performance ratings, and five sessions of cognitive (vigilant attention) and physical (ecological kicking task) performance testing. Using baseline self-report data, menstrual cycle phase for each day of the study was inferred using a continuous (percentage through the cycle), 2-phase (follicular, luteal), 3-phase (menses, mid-late follicular, luteal), and 4-phase (menses, mid-late follicular, early-mid luteal, pre-menses) model. Results No outcome was consistently predicted by all phase-models. Objective sleep efficiency was lower in menses according to the 3- and 4-phase models. Subjective mood and performance were higher in the mid-late follicular according to the 3-phase model. Discussion The relationships between menstrual cycle phase and sleep, mood, and performance depend on how menstrual cycle phases are classified. Discordant findings highlight the importance of methodological differences in athlete menstrual cycle research. The effects of the menstrual cycle phase need to be further studied using consistent and standardised classifications across studies.

Sleep deprivation alters utilization of negative feedback in risky decision-making.

Sleep loss has sometimes catastrophic effects on risky decision-making. However, it is unknown to what extent such deficits are exacerbated with increasing duration of sleep deprivation (SD) and whether sustained vigilant attention mediates this sleep deprivation-induced deficit. The present study aimed to investigate the effect of 36 hours of SD on 37 male college students' arousal, emotion, vigilant attention, and risky decision-making, using the Psychomotor Vigilance Test, the Game of Dice Task, and scales assessing fatigue, sleep, and emotions. Compared to baseline, SD significantly increased sleepiness, fatigue, and negative emotions, decreased positive emotions and vigilant attention, and led to a shift toward risky decision-making, and these effects often appeared 15 or 20 hours after SD. Interestingly, participants' ability to employ positive feedback was maintained, whereas their performance to utilize negative feedback was impaired even after 8 hours of sleep deprivation. Meanwhile, vigilant attention acted as a mediator between SD and risky decision-making (z = -1.97, 95% [-6.00, -0.30]). These results suggest that sleep-deprived individuals are unable to use negative feedback to optimize their judgments, which may account for their poor decision-making under risk.

The effects of digital CBT intervention on attentional bias and sleep quality of poor sleepers with insomnia symptoms.

Attentional bias is a salient manifestation of insomnia. Digital cognitive therapy for insomnia (dCBT-I) has been validated as effective in alleviating this cognitive dysfunction. However, the effect of dCBT-I on attentional bias among Chinese individuals with insomnia remains undiscussed. This research sought to investigate this effect via a pictorial dot-probe task. In Study 1, the pattern of attentional bias among poor sleepers (N = 52) and normal sleepers (N = 56) was assessed by the dot-probe task. In study 2, dCBT-I and conventional education were received by the experimental group (N = 42) and control group (N = 25), respectively. The dot-probe tasks and sleep quality assessments were completed at baseline and post-test. The results of Study 1 indicated that poor sleepers exhibited significant attentional bias, characterized by increased attentional vigilance. Compared to normal sleepers, they showed heightened attentional vigilance toward sleep-related cues. The results of Study 2 showed that both dCBT-I and conventional education led to improvements in PSQI scores. However, only dCBT-I training alleviated attentional vigilance toward sleep-related cues. Additionally, dCBT-I was uniquely effective in reducing feelings of fatigue. Poor sleepers had a significant attentional bias, marked by heightened vigilance toward sleep-related cues. Digital CBT-I effectively reduced attentional vigilance and fatigue, suggesting that dCBT-I targets the cognitive distortions associated with insomnia. ChiCTR2100053172 (registered 13/11/2021).

Mind wandering is associated with worsening attentional vigilance.

The tendency for our minds to wander is a pervasive and disruptive influence on continued task performance. Models of sustained attention have implicated mind wandering, moments when attention has turned inwards toward task-unrelated thought, in characteristic patterns of worsening performance with greater time-on-task, known as the vigilance decrement. Despite their theoretical connection, associations between mind wandering and the vigilance decrement have not been investigated systematically. Across two studies (N = 730), we evaluated covariance between within-task change in rates of probe-caught mind wandering and patterns of worsening behavioral task performance that characterize the vigilance decrement. Bivariate growth curve models characterized patterns of intraindividual linear change in mind wandering alongside concomitant changes in task accuracy, response time (RT), and RT variability. Importantly, models assessing the covariance between intraindividual change in mind wandering and behavioral outcome measures confirmed that increases in mind wandering are associated with patterns of worsening behavioral performance with greater time-on-task. In addition, we investigated the role of several moderating factors associated with patterns of within-task change: self-reported task interest and motivation, and individuals' propensity for mind wandering, and mindfulness in their daily lives. These factors moderated either the overall level or rate of within-task change in mind wandering. Our results provide support for models of sustained attention that directly implicate mind wandering in worsening behavioral performance with greater time-on-task in continuous performance tasks requiring sustained attention. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Atypical Antipsychotics Use and Neuroleptic Malignant Syndrome: A Review With a Clinical Perspective

Neuroleptic malignant syndrome (NMS) is a potentially life-threatening idiosyncratic reaction associated with the use of antipsychotic medications, characterized by hyperthermia, muscle rigidity, and alterations in consciousness. Despite a reduction in its incidence due to the predominance of atypical antipsychotics in contemporary treatment regimens, NMS remains a critical neuropsychiatric emergency that warrants vigilant attention. There is a hypothesis proposing that catatonia and NMS may exist along a continuum of the same disorder, and evidence suggests that lorazepam may offer therapeutic benefits for both conditions. It is potential for the concurrent occurrence of NMS and serotonin syndrome when antipsychotics and antidepressants are administered concomitantly. This paper presents a case of NMS following the reinitiation of antipsychotic treatment over an extended duration, a scenario inadequately addressed in existing reports, and discusses strategies for its management in clinical practice.

Attentional bias to social media stimuli ismoderated by fear of missing out among problematic social media users.

Previous evidence has indicated that problematic social media use (PSMU) is characterized by an attentional bias to social media icons (such as Facebook icons), but not to social webpages (such as Facebook webpages). They suggest that there may be other factors influencing attentional bias like fear of missing out (FoMO). But it remains unclear how FoMO moderates attentional bias in PSMU. This study aims to investigate whether PSMU show attentional bias for stimuli associated with social media, and how FoMO moderates on attentional bias among PSMU through experimental methods. Based on the Interaction of Person-Affect-Cognition-Execution (I-PACE) model, this study explored mechanisms of attentional bias to social media icons (such as WeChat) related to PSMU and further examined the role of FoMO in this relationship. Specifically, attentional bias patterns to social media icons of 62 participants (31 PSMU and 31 control group) were explored during a dot-probe paradigm combined with eye-tracking in Experiment 1, and attentional bias patterns to social media icons of another 61 individuals with PSMU with different FoMO levels was explored during a dot-probe paradigm combined with eye-tracking in Experiment 2. Results revealed that individuals with PSMU had an attentional bias toward social media icons, demonstrated by attentional maintenance, and such bias such bias was moderated by FoMO negatively, demonstrated by attentional vigilance and maintenance in PSMU/high FoMO. These results suggest that attentional bias is a common mechanism associated with PSMU, and FoMO is a key factor on the development of PSMU.

A comprehensive statistical analysis of Malaria dynamics in the Adamawa region of Cameroon, from 2018 to 2022

Malaria remains a prominent public health concern in Cameroon, with the potential for epidemic outbreaks, necessitating a robust understanding of its dynamics. This paper uses routinely collected surveillance data from health facilities in the Adamawa Region since January 2018. By applying statistical analysis, this study aims to enhance comprehension, enable data predictions, and facilitate informed decision-making for public health policy implementation. Focusing on weekly health districts data spanning from 2018 to 2022, our analysis employs key statistical metrics for central tendency, data spread, distribution shape, and variable dependence. The study reveals distinctive trends, highlighting peak malaria transmission periods consistently occurring between August and November each year. The highest weekly recorded case count in any health district reached 1,294. The data exhibits leptokurtic distributions, skewed to the left of the median. And in 2022, 11% of the population was reported to have contracted malaria. Despite an overall region-wide average growth rate of -1.21% over the past five years, maintaining vigilant attention to this critical health issue is imperative. Auto dependence analysis indicates that observations are weekly correlated, assuming the time series as stationary. The stationarity has been confirmed by ADF and KPSS tests that we performed. This comprehensive data analysis helps our understanding of the malaria landscape in the Adamawa Region of Cameroon. The paper also recommends the inclusion of additional variables in data collection for a more holistic perspective. These findings provide a basis for the formulation and implementation of targeted interventions by relevant stakeholders, aiding in the prediction of future cases and ultimately contributing to the effective management of malaria in the region.

Vigilant Attention During Cognitive and Language Processing in Aphasia.

Persons with aphasia (PWA) experience differences in attention after stroke, potentially impacting cognitive/language performance. This secondary analysis investigated physiologically measured vigilant attention during linguistic and nonlinguistic processing in PWA and control participants. To evaluate performance and attention in a language task, seven PWA read sentences aloud (linguistic task) and were compared to a previous data set of 10 controls and 10 PWA. To evaluate performance and attention in a language-independent task, 11 controls and nine PWA completed the Bivalent Shape Task (nonlinguistic task). Continuous electroencephalogram (EEG) data were collected during each session. A previously validated EEG algorithm classified vigilant-attention state for each experiment trial into high, moderate, distracted, or no attention. Dependent measures were task accuracy and amount of time spent in each attention state (measured by the number of trials). PWA produced significantly more errors than controls on the linguistic task, but groups performed similarly on the nonlinguistic task. During the linguistic task, controls spent significantly more time than PWA in a moderate-attention state, but no statistically significant differences were found between groups for other attention states. For the nonlinguistic task, amount of time controls and PWA spent in each attention state was more evenly distributed. When directly comparing attention patterns between linguistic and nonlinguistic tasks, PWA showed significantly more time in a high-attention state during the linguistic task as compared to the nonlinguistic task; however, controls showed no significant differences between linguistic and nonlinguistic tasks. This study provides new evidence that PWA experience a heightened state of vigilant attention when language processing demands are higher (during a linguistic task) than when language demands are lower (during a nonlinguistic task). Collectively, results of this study suggest that when processing language, PWA may allocate more attentional resources than when completing other kinds of cognitive tasks.

Differences in attentional bias between self-related information and external cues from others in individuals with social anxiety: An event-related potential study

Individuals with high social anxiety show a more considerable attentional bias toward self-relevant information and outwardly threatening stimuli than do those with low social anxiety. Some studies have investigated the attentional bias between self-relevant information and external social cues in people with high social anxiety but have not reached consistent conclusions. This study used a modified dot-probe task and collected temporal and electroencephalogram responses to three self-other face pairs among 15 people with high social anxiety and 20 people with low social anxiety. Both groups responded quicker to self-relevant information than external social cues. Others’ emotional potencies moderated the attentional bias. Individuals with high social anxiety exhibited larger P1 amplitudes and smaller N170 amplitudes (mainly in the right hemisphere) for all face pairs and larger P2 amplitudes for the self-neutral and other-angry face pairs than those with low social anxiety. These findings suggest that people with social anxiety prioritize allocating attentional resources to self-relevant information, with others’ angry faces having the greatest influence on the allocation. Individuals with high social anxiety initially exhibit more attentional vigilance and less structural coding for face pairs, followed by heightened engagement with threatening cues compared to those with low social anxiety.

Gradual and abrupt increase in atmospheric CO2 concentrations trigger divergent responses of microbial necromass accumulation in paddy soils

Microbial necromass C (MNC) plays a critical role in promoting soil organic C (SOC) formation and stabilization, particularly in the context of climate change. Most investigations on the impact of elevated CO2 concentrations (eCO2) on MNC have been performed by exposing ecosystems to an abrupt increase in CO2. However, the atmospheric CO2 increase is a gradual process, and knowledge about the response of necromass to gradual increase in CO2 is lacking. We tested the hypothesis that microbial necromass would show different responses to abrupt and gradual CO2 increases. Furthermore, it is still unknown whether eCO2 will trigger similar responses between surface and subsurface soil layers. Here, we determined the MNC concentrations and their proportions in SOC in surface and subsurface soil layers via open-top chambers. CO2 treatments included ambient control, abrupt CO2 increase by 200 ppm above control, and gradual CO2 increase by 40 ppm each year until reaching 200 ppm over five years. Overall, compared with the ambient control, abrupt eCO2 induced a significantly stronger decrease in necromass (20.3 %) when averaged across three soil layers, while gradual eCO2 led to insignificant variations in necromass (6.7 %). The necromass proportion in SOC decreased with depth under both eCO2 treatments with a significant decline occurring in abrupt eCO2 treatment. The observed greater magnitude of eCO2 effects on fungal necromass relative to bacterial necromass in subsurface layers illustrates a distinct microbial community response to climate change. Taken together, abrupt and gradual eCO2 approaches differed in their impact on MNC, and its response to eCO2 may be somewhat overestimated by abrupt eCO2 approach. Furthermore, MNC in subsurface soil witnessed a more sensitivity or vulnerability to eCO2 than that of topsoil. We suggest vigilant attention will need to be paid to the feedback of necromass C in deep soil poised by future climate change.

Regulation of negative emotions through directed attention in high-trait-anxious women: Evidence from event-related potentials and eye-tracking

Abnormal emotional responses in high-trait-anxious (HTA) individuals may be related to the use of emotion regulation strategies. Directed attention is a substrategy of attention deployment, which has been proven to be effective in regulating individual negative emotions. The present study investigated whether HTA women can effectively utilize directed attention to decrease negative emotions. Two studies were conducted using the same directed attention paradigm, with one focusing on event-related potentials (ERPs) and the other utilizing eye-tracking techniques. Participants viewed negative and neutral pictures and rated their negative emotions experienced during viewing. During directed attention, attention was directed towards highly arousing aspects, less arousing aspects of negative pictures, or less arousing aspects of neutral pictures. In study 1, late positive potentials (LPP) were recorded in 26 HTA and 24 low-trait-anxious (LTA) women. In study 2, the latency of first fixation, the proportion of gaze duration and fixations in the specific area were recorded in 27 HTA and 23 LTA women. Both the HTA and LTA groups revealed a decrease in negative emotional ratings and LPP amplitudes when their attention was directed towards the less arousing aspects of negative pictures. Furthermore, in this condition, the HTA group had a shorter latency of first fixation on highly arousing aspects and a higher proportion of gaze duration on less arousing aspects of negative pictures compared to the LTA group. These results indicate that when confronted with negative pictures, HTA women are able to regulate their emotional responses through directed attention, which may be accompanied by attentional vigilance and avoidance tendencies.

Identifying the Shared and Dissociable Neural Bases between Self-Worth and Moral Ambivalence.

Self-ambivalence, a prevalent phenomenon in daily life, has been increasingly substantiated by research. It refers to conflicting self-views and evaluations, primarily concerning self-worth and morality. Previous behavioral research has distinguished self-worth and moral ambivalence, but it remains unclear whether they have separable neural bases. The present study addressed this question by examining resting-state brain activity (i.e., the fractional amplitude of low-frequency fluctuations, fALFF) and connectivity (i.e., resting-state functional connectivity, RSFC) in 112 college students. The results found that self-worth ambivalence was positively related to the fALFF in the orbitofrontal cortex (OFC) and left superior parietal lobule (SPL). The RSFC strength between the SPL and precuneus/posterior cingulate cortex (PCC) was positively related to self-worth ambivalence. Moral ambivalence was positively associated with the fALFF in the left SPL (extending into the temporoparietal junction) and right SPL. The RSFC strengths between the left SPL/TPJ and OFC, as well as the RSFC strengths between the right SPL as a seed and the bilateral middle and inferior temporal gyrus, were associated with moral ambivalence. Overall, the neural bases of self-worth and moral ambivalence are associated with the SPL and OFC, involved in attentional alertness and value representation, respectively. Additionally, the neural basis of moral ambivalence is associated with the TPJ, responsible for mentalizing.

Contaminants of Emerging Concern (CECs): Assessment of health and dietary risk in the consumption of Plagioscion squamosissimus in one of the largest rivers in a semi-arid region (Rio São Francisco, Brazil)

The São Francisco River, significant in semi-arid areas, faces impacts from hydroelectric plants and agricultural pesticides. Despite extensive research on its aquatic life, especially fish reproductive biology, there's a notable lack of studies on toxicity and its human health implications. This gap highlights the need for targeted research in this vital ecological zone. Consequently, this study aimed to scrutinize the concentrations of Contaminants of Emerging Concern (CECs), including Polychlorinated Biphenyls (PCBs), Polybrominated Diphenyl Ethers (PBDEs), Organochlorine Pesticides (OCPs), pyrethroid pesticides (PPs), triazine pesticides (TPs), and Organophosphorus Pesticides (OPPs) in the water, sediment, and fish (Plagioscion squamosissimus). The findings revealed the presence of all compound classes in sediment, albeit in limited quantities in water. Biotic components exhibited higher concentrations in nerve tissue, followed by the liver and muscle, indicative of a bioaccumulation trend. It is noteworthy that more concerning levels were observed in both water and sediments. In particular, Fenvalerate in water and Prometon in sediments demonstrated the highest Bioaccumulation Factor (BAF) values. While for non-carcinogenic effects and Cancer Risk (CR), the parameters were calculated and all classified in the areas of acceptable or insignificant according to chemical safety agencies. However, the compounds under scrutiny demand vigilant attention, given their nearly ubiquitous presence across various matrices and demonstrated bioaccumulative capacity, potentially posing future repercussions for human health.

Nursing students' perceptions and experiences in pressure injury risk assessment: A qualitative study

AimThis study aims to capture the perspectives of senior undergraduate nursing students concerning pressure injury risk assessment, shedding light on their practical experiences and insights. BackgroundPressure injuries pose a significant challenge in healthcare, demanding vigilant attention from healthcare professionals. Central to mitigating this challenge is the imperative role of risk assessment, placing nurses at the forefront of prevention strategies. Given the critical nature of this responsibility, the need for a robust and well-structured integration of risk assessment teaching within undergraduate nursing education becomes increasingly apparent. DesignThis study was conducted as a descriptive qualitative study. MethodThis research was conducted at the Nursing Faculty of a State University in Ankara/Turkey, involving 19 senior students enrolled in the nursing program. Data was collected online using in-depth interviews with semi-structured interview questions between November and December 2022. After data collection, transcripts were generated and subjected to thematic analysis. The study was reported following the COREQ Checklist. ResultsThe study revealed two overarching themes: Opinions and Experiences. Within the Opinions theme, subthemes emerged, including "Features of Teaching," "Pressure Injury Definition," and "Improving Teaching Methods." The Experiences theme encompassed sub-themes such as the "Limited Relationship between Theoretical Teaching and Clinical Practice" and "Assessing the Risk of Pressure Injury in Practice." ConclusionParticipants affirmed that theoretical instruction sufficiently addressed pressure injury risk assessment yet expressed concerns about the inadequacy of clinical teaching. Additionally, they underscored the need for innovative teaching methods in the theoretical instructional process.

Alteration in neural oscillatory activity and phase-amplitude coupling after sleep deprivation: Evidence for impairment and compensation effects.

Insufficient sleep can significantly affect vigilance and increase slow-wave electroencephalographic power as homeostatic sleep pressure accumulates. Phase-amplitude coupling is involved in regulating the spatiotemporal integration of physiological processes. This study aimed to examine the functional associations of resting-state electroencephalographic power and delta/theta-gamma phase-amplitude coupling from the prefrontal cortex (PFC) to posterior regions with vigilance performance after sleep deprivation. Forty-six healthy adults underwent 24-hr sleep deprivation with resting-state electroencephalographic recordings, and vigilant attention was measured using the Psychomotor Vigilance Task. Power spectral and phase-amplitude coupling analyses were conducted, and correlation analysis was utilized to reveal the relationship between electroencephalographic patterns and changes in vigilance resulting from sleep deprivation. Sleep deprivation significantly declined vigilance performance, accompanied by increased resting-state electroencephalographic power in all bands and delta/theta-gamma phase-amplitude coupling. The increased theta activity in centro-parieto-occipital areas significantly correlated with decreased mean and slowest response speed. Conversely, the increased delta-low gamma and theta-high gamma phase-amplitude couplings negatively correlated with the deceleration of the fastest Psychomotor Vigilance Task reaction times. These findings suggest that sleep deprivation affects vigilance by altering electroencephalographic spectral power and information communication across frequency bands in different brain regions. The distinct effects of increased theta power and delta/theta-gamma phase-amplitude coupling might reflect the impairment and compensation of sleep deprivation on vigilance performance, respectively.