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result(s) for
"Petrovic, Predrag"
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Innovations effect on CO2 emissions: asymmetric panel data approach
2023
The objective of this study is to uncover the nature and strength of the effect that innovations have on CO
2
emissions. The main motivation of this research is to offer reliable and credible findings by eliminating some methodical and conceptual shortcomings of the existing papers. The scope of the analysis is examining the innovations-CO
2
emissions relationship in a sample of 43 countries in the period from 1991 to 2018. The research is based on the application of hidden panel cointegration theory and the concept of a partially asymmetric cointegration equation. The main findings of the study demonstrate that when innovations grow by 1%, the pattern of their change leads to an increase in CO
2
emissions by an average of 0.006%. At the same time, when innovations decline by 1%, their change leads to a reduction in CO
2
emissions by an average of 0.001%. Strictly speaking, in the phase of innovations growth, they have environmentally hostile average influence, while in the phase of innovations reduction, their impact is on average environmentally friendly. The average effect of innovations is very asymmetric, because negative environmental impact is about six times stronger than the positive one. Analysis by countries demonstrates that innovations influence varies significantly from country to country. The impact is environmentally friendly in only 32.6% of countries, regardless of whether innovations increase or decrease. In the remaining cases, the influence on the environment is hostile either when innovations grow, when they decline, or in both situations. The main conclusion of this study is that nature of the impact of innovations on CO
2
emissions is quite unfavorable, which points to the need for much greater support for green innovations.
Journal Article
Economic sustainability of energy conservation policy: improved panel data evidence
2023
This paper examines the nature of the economic activity–energy use nexus for 82 countries and the period from 1971 to 2014. Compared to all other papers, the current study is based on a significantly larger number of observations and was carried out by using new and advanced non-stationary panel data econometric techniques that overcame most of the existing methodical failures. The findings of the Granger non-causality test quite robustly lead to the conclusion that there is bi-directional causality both in the short and the long run. Finally, the obtained estimation results suggest that the increase of energy consumption by 1% results in an increase of GDP per capita between 0.54 and 0.56%. Also, the increase of GDP by 1% results in an increase in energy consumption between 0.47 and 0.48%. Governments cannot simply apply energy conservation policy by reducing total consumption of fossil fuels without negatively affecting economic activity and generating of spiral of mutual effects with positive ecological and very negative economic consequences. It is therefore necessary to make significant efforts to modernize the energy sector and to stimulate companies to invest in new energy-efficient production technologies relying on alternative environmentally friendly energy sources.
Journal Article
Resolving the Delusion Paradox
2023
Background and Hypothesis
The neurocomputational framework of predictive processing (PP) provides a promising approach to explaining delusions, a key symptom of psychotic disorders. According to PP, the brain makes inferences about the world by weighing prior beliefs against the available sensory data. Mismatches between prior beliefs and sensory data result in prediction errors that may update the brain’s model of the world. Psychosis has been associated with reduced weighting of priors relative to the sensory data. However, delusional beliefs are highly resistant to change, suggesting increased rather than decreased weighting of priors. We propose that this “delusion paradox” can be resolved within a hierarchical PP model: Reduced weighting of prior beliefs at low hierarchical levels may be compensated by an increased influence of higher-order beliefs represented at high hierarchical levels, including delusional beliefs. This may sculpt perceptual processing into conformity with delusions and foster their resistance to contradictory evidence.
Study Design
We review several lines of experimental evidence on low- and high-level processes, and their neurocognitive underpinnings in delusion-related phenotypes and link them to predicted processing.
Study Results
The reviewed evidence supports the notion of decreased weighting of low-level priors and increased weighting of high-level priors, in both delusional and delusion-prone individuals. Moreover, we highlight the role of prefrontal cortex as a neural basis for the increased weighting of high-level prior beliefs and discuss possible clinical implications of the proposed hierarchical predictive-processing model.
Conclusions
Our review suggests the delusion paradox can be resolved within a hierarchical PP model.
Journal Article
Core executive functions are associated with success in young elite soccer players
2017
Physical capacity and coordination cannot alone predict success in team sports such as soccer. Instead, more focus has been directed towards the importance of cognitive abilities, and it has been suggested that executive functions (EF) are fundamentally important for success in soccer. However, executive functions are going through a steep development from adolescence to adulthood. Moreover, more complex EF involving manipulation of information (higher level EF) develop later than simple executive functions such as those linked to simple working memory capacity (Core EF). The link between EF and success in young soccer players is therefore not obvious. In the present study we investigated whether EF are associated with success in soccer in young elite soccer players. We performed tests measuring core EF (a demanding working memory task involving a variable n-back task; dWM) and higher level EF (Design Fluency test; DF). Color-Word Interference Test and Trail Making Test were performed on an exploratory level as they contain a linguistic element. The lower level EF test (dWM) was taken from CogStateSport computerized concussion testing and the higher level EF test (DF) was from Delis-Kaplan Executive Function System test battery (D-KEFS). In a group of young elite soccer players (n = 30; aged 12-19 years) we show that they perform better than the norm in both the dWM (+0.49 SD) and DF (+0.86 SD). Moreover, we could show that both dWM and DF correlate with the number of goals the players perform during the season. The effect was more prominent for dWM (r = 0.437) than for DF (r = 0.349), but strongest for a combined measurement (r = 0.550). The effect was still present when we controlled for intelligence, length and age in a partial correlation analysis. Thus, our study suggests that both core and higher level EF may predict success in soccer also in young players.
Journal Article
Executive Functions Predict the Success of Top-Soccer Players
by
Vestberg, Torbjörn
,
Petrovic, Predrag
,
Gustafson, Roland
in
Adult
,
Athletic Performance - physiology
,
Athletic Performance - psychology
2012
While the importance of physical abilities and motor coordination is non-contested in sport, more focus has recently been turned toward cognitive processes important for different sports. However, this line of studies has often investigated sport-specific cognitive traits, while few studies have focused on general cognitive traits. We explored if measures of general executive functions can predict the success of a soccer player. The present study used standardized neuropsychological assessment tools assessing players' general executive functions including on-line multi-processing such as creativity, response inhibition, and cognitive flexibility. In a first cross-sectional part of the study we compared the results between High Division players (HD), Lower Division players (LD) and a standardized norm group. The result shows that both HD and LD players had significantly better measures of executive functions in comparison to the norm group for both men and women. Moreover, the HD players outperformed the LD players in these tests. In the second prospective part of the study, a partial correlation test showed a significant correlation between the result from the executive test and the numbers of goals and assists the players had scored two seasons later. The results from this study strongly suggest that results in cognitive function tests predict the success of ball sport players.
Journal Article
Placebo analgesia and its opioidergic regulation suggest that empathy for pain is grounded in self pain
2015
Empathy for pain activates brain areas partially overlapping with those underpinning the first-hand experience of pain. It remains unclear, however, whether such shared activations imply that pain empathy engages similar neural functions as first-hand pain experiences. To overcome the limitations of previous neuroimaging research, we pursued a conceptually novel approach: we used the phenomenon of placebo analgesia to experimentally reduce the first-hand experience of pain, and assessed whether this results in a concomitant reduction of empathy for pain. We first carried out a functional MRI experiment (n = 102) that yielded results in the expected direction: participants experiencing placebo analgesia also reported decreased empathy for pain, and this was associated with reduced engagement of anterior insular and midcingulate cortex: that is, areas previously associated with shared activations in pain and empathy for pain. In a second step, we used a psychopharmacological manipulation (n = 50) to determine whether these effects can be blocked via an opioid antagonist. The administration of the opioid antagonist naltrexone blocked placebo analgesia and also resulted in a corresponding \"normalization\" of empathy for pain. Taken together, these findings suggest that pain empathy may be associated with neural responses and neurotransmitter activity engaged during first-hand pain, and thus might indeed be grounded in our own pain experiences.
Journal Article
When Fear Is near: Threat Imminence Elicits Prefrontal-Periaqueductal Gray Shifts in Humans
by
Marchant, Jennifer L.
,
Frith, Christopher D.
,
Petrovic, Predrag
in
Affectivity. Emotion
,
Amygdala
,
Anatomical correlates of behavior
2007
Humans, like other animals, alter their behavior depending on whether a threat is close or distant. We investigated spatial imminence of threat by developing an active avoidance paradigm in which volunteers were pursued through a maze by a virtual predator endowed with an ability to chase, capture, and inflict pain. Using functional magnetic resonance imaging, we found that as the virtual predator grew closer, brain activity shifted from the ventromedial prefrontal cortex to the periaqueductal gray. This shift showed maximal expression when a high degree of pain was anticipated. Moreover, imminence-driven periaqueductal gray activity correlated with increased subjective degree of dread and decreased confidence of escape. Our findings cast light on the neural dynamics of threat anticipation and have implications for the neurobiology of human anxiety-related disorders.
Journal Article
Familial risk and heritability of diagnosed borderline personality disorder: a register study of the Swedish population
by
Skoglund, Charlotte
,
Tiger Annika
,
Asherson, Philip
in
Borderline personality disorder
,
Diagnosis
,
Environmental factors
2021
Family and twin studies of Borderline Personality Disorder (BPD) have found familial aggregation and genetic propensity for BPD, but estimates vary widely. Large-scale family studies of clinically diagnosed BPD are lacking. Therefore, we performed a total-population study estimating the familial aggregation and heritability of clinically diagnosed BPD. We followed 1,851,755 individuals born 1973–1993 in linked Swedish national registries. BPD-diagnosis was ascertained between 1997 and 2013, 11,665 received a BPD-diagnosis. We identified relatives and estimated sex and birth year adjusted hazard ratios, i.e., the rate of BPD-diagnoses in relatives to individuals with BPD-diagnosis compared to individuals with unaffected relatives, and used structural equation modeling to estimate heritability. The familial association decreased along with genetic relatedness. The hazard ratio was 11.5 (95% confidence interval (CI) = 1.6–83.8) for monozygotic twins; 7.4 (95% CI = 1.0–55.3) for dizygotic twins; 4.7 (95% CI = 3.9–5.6) for full siblings; 2.1 (95% CI = 1.5–3.0) for maternal half-siblings; 1.3 (95% CI = 0.9–2.1) for paternal half-siblings; 1.7 (95% CI = 1.4–2.0) for cousins whose parents were full siblings; 1.1 (95% CI = 0.7–1.8) for cousins whose parents were maternal half-siblings; and 1.9 (95% CI = 1.2–2.9) for cousins whose parents were paternal half-siblings. Heritability was estimated at 46% (95% CI = 39–53), and the remaining variance was explained by individually unique environmental factors. Our findings pave the way for further research into specific genetic variants, unique environmental factors implicated, and their interplay in risk for BPD.
Journal Article
Current State and Advances in Antimicrobial Strategies for Burn Wound Dressings: From Metal-Based Antimicrobials and Natural Bioactive Agents to Future Perspectives
by
Osmokrovic, Andrea
,
Stojkovska, Jasmina
,
Krunic, Tanja
in
Animals
,
Anti-Infective Agents - pharmacology
,
Anti-Infective Agents - therapeutic use
2025
Burn wounds represent a complex clinical challenge, primarily due to their high susceptibility to infections and the frequent formation of the biofilm, which significantly hinder the healing process. Therefore, effective infection prevention and management are critical components of burn wound care. This review provides a comprehensive overview of the current and emerging antimicrobial strategies in burn management, with a particular focus on alternative approaches to conventional antiseptics and antibiotics. This manuscript highlights the role of metals and metal-based agents, including silver, zinc oxide, and copper compounds, alongside plant-derived bioactive substances such as aloe vera, marigold, and turmeric. Additionally, the potential of antimicrobial peptides and probiotics as innovative therapeutic options is explored, emphasizing their antimicrobial, anti-inflammatory, and pro-healing properties. Finally, this review presents an analysis of recent patents in the field of burn wound care, offering insights into current trends and future directions in the development of advanced wound dressings. By addressing both established and novel strategies, this review aims to provide a valuable resource for clinicians, researchers, and innovators seeking to improve outcomes in burn wound management.
Journal Article
Stress, depression, and risk of dementia – a cohort study in the total population between 18 and 65 years old in Region Stockholm
by
Carlsson, Axel C.
,
Petrovic, Predrag
,
Wachtler, Caroline
in
Administrative databases
,
Adolescent
,
Adult
2023
Background
Chronic stress and depression are potential risk factors for mild cognitive impairment and dementia, including Alzheimer disease. The aim was to investigate whether any such risk is additive.
Methods
Cohort study including 1 362 548 people (665 997 women, 696 551 men) with records in the Region Stockholm administrative healthcare database (VAL).
Exposure was a recorded ICD-10 diagnosis of chronic stress, depression, or both, recorded in 2012 or 2013. Outcome was a diagnosis of Alzheimer disease, other dementia, or mild cognitive impairment recorded from 2014 through 2022. Odds ratios with 99% confidence intervals (CI) adjusted for age, sex, neighborhood socioeconomic status, diabetes, and cardiovascular disorders were calculated.
Results
During the exposure period, 4 346 patients were diagnosed with chronic stress, 40 101 with depression, and 1 898 with both. The average age at baseline was around 40 years in all groups. In the fully adjusted model, the odds ratio of Alzheimer disease was 2.45 (99% CI 1.22–4.91) in patients with chronic stress, 2.32 (99% CI 1.85–2.90) in patients with depression, and 4.00 (99% CI 1.67–9.58) in patients with chronic stress and depression. The odds ratio of mild cognitive impairment was 1.87 (99% CI 1.20–2.91) in patients with chronic stress, 2.85 (99% CI 2.53–3.22) in patients with depression, and 3.87 (99% CI 2.39–6.27) in patients with both. When other dementia was analyzed, the odds ratio was significant only in patients with depression, 2.39 (99% CI 1.92–2.96).
Conclusions
Documented chronic stress increased the risk of mild cognitive impairment and Alzheimer disease. The same was seen with depression. The novel finding is the potential additive effect of chronic stress to depression, on risk of MCI and AD.
Journal Article