Humans often face binary cognitive-control dilemmas, with the choice between persistence and flexibility being a crucial one. Tackling these dilemmas requires metacontrol, i.e., the control of the current cognitive-control policy. As predicted from functional, psychometric, neuroscientific, and modeling approaches, interindividual variability in metacontrol biases towards persistence or flexibility could be demonstrated in metacontrol-sensitive tasks. These biases covary systematically with genetic predispositions regarding mesofrontal and nigrostriatal dopaminergic functioning and the individualistic or collectivistic nature of the cultural background. However, there is also evidence for mood- and meditation-induced intraindividual variability (with negative mood and focused-attention meditation being associated with a bias towards persistence, and positive mood and open-monitoring meditation being associated with a bias towards flexibility), suggesting that genetic and cultural factors do not determine metacontrol settings entirely. We suggest a theoretical framework that explains how genetic predisposition and cultural learning can lead to the implementation of metacontrol defaults, which however can be shifted towards persistence or flexibility by situational factors.
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http://dx.doi.org/10.1016/j.neubiorev.2017.01.009 | DOI Listing |
Behav Brain Funct
December 2024
School of Psychology, Northeast Normal University, 5268 Renmin Street, Changchun, 130024, Jilin, China.
Reward cues have long been considered to enhance creative performance; however, little is known about whether rewards can affect creative problem solving by manipulating states of flexibility and persistence. This study sought to elucidate the differential impacts of real versus hypothetical rewards on the creative process utilizing the Chinese compound remote association task. Behavioral analysis revealed a significantly enhanced solution rate and response times in scenarios involving real rewards, in contrast to those observed with hypothetical rewards.
View Article and Find Full Text PDFInt J Biol Macromol
December 2024
International and Inter-University Centre for Nanoscience and Nanotechnology (IIUCNN), Mahatma Gandhi University, Kottayam, Kerala 686 560, India; School of Energy Materials, Mahatma Gandhi University, Kottayam, Kerala 686560, India; School of Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam, Kerala 686560, India; Department of Chemical Sciences, University of Johannesburg, P.O.Box 17011, Doornfontein, 2028 Johannesburg, South Africa; Trivandrum Engineering, Science and Technology (TrEST) Research Park, Trivandrum 695016, India. Electronic address:
Cellulose paper-based composites represent a promising and sustainable alternative for electromagnetic interference (EMI) shielding applications. Derived from renewable and biodegradable cellulose fibers, these composites are enhanced with conductive fillers namely carbon nanotubes, graphene, or metallic nanoparticles, achieving efficient EMI shielding while maintaining environmental friendliness. Their lightweight, flexible nature, and mechanical robustness make them ideal for diverse applications, including wearable electronics, flexible circuits, and green electronics.
View Article and Find Full Text PDFSci Rep
December 2024
Brain Dynamics Lab, Interdisciplinary Center of Biomedical and Engineering Research for Health, Universidad de Valparaíso, Valparaíso, Chile.
Multi-state metastability in neuroimaging signals reflects the brain's flexibility to transition between network configurations in response to changing environments or tasks. We modeled these dynamics with a Kuramoto network of 90 nodes oscillating at an intrinsic frequency of 40 Hz, interconnected using human brain structural connectivity strengths and delays. We simulated this model for 30 min to generate multi-state metastability.
View Article and Find Full Text PDFACS Appl Mater Interfaces
December 2024
College of Bioresources Chemical & Materials Engineering, Shaanxi University of Science & Technology, Xi'an, Shaanxi 710021, China.
Achieving high shielding effectiveness in electromagnetic shielding materials relies heavily on high conductivity, yet simultaneously enhancing the absorption loss remains a persistent challenge. Consequently, the study successfully creates efficient electromagnetic shielding composite films with a unique grape-like bunch structure of hollow nanosilver (HCAF) through layer-by-layer assembly. The utilization of poly(dopamine) (PDA) to anchor nanosilver granules (AgNPs) onto cellulose nanofibers (CNF) results in the formation of CNF@PDA@AgNPs.
View Article and Find Full Text PDFPLoS One
December 2024
Faculty of Biology, Division of Informatics, Imaging and Data Sciences, School of Health Sciences, Medicine and Health, University of Manchester, Manchester, United Kingdom.
Background: The declining trend in the number of primary care physicians worldwide has led to shortages especially within socioeconomically deprived areas. Socioeconomically deprived areas in the context of this review are defined by regions where there are lower levels of income and access to essential services such as primary healthcare compared to other areas. This shortage contributes to a higher incidence of preventable hospital admissions, unnecessarily straining healthcare infrastructure and negatively affecting patient outcomes.
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