scholarly journals Executive functions, self-paced exercise and cycling performance

2019 ◽  
Author(s):  
Darias Holgado ◽  
Daniel Sanabria

The main aim of the present thesis was to understand the role of executive (cognitive) functions in self-paced aerobic exercise (cycling). A self-paced exercise is a physical activity in which the effort has to be distributed in the best possible way to achieve the objective of the event (e.g., to cover a given distance as quickly as possible or to cover the largest possible distance in a given time). Self-paced exercise requires the monitoring and control of feedback from the muscles and cardiorespiratory systems to the brain. From an applied point of view, we could consider that the self-paced aerobic exercise is a goal-directed behaviour towards an objective that involves several cognitive processes, and in particular of executive functions (e.g., inhibitory control or working memory). Consequently, any change at cognitive level (and brain related to the cognitive processes under study) will affect physical performance. To understand this relationship, in an introductory chapter we summarized the role of executive functions on the self-paced exercise, and the empirical evidence of the neural basis. We also summarized the different manipulations that have been designed to investigate the role of the executive functions on self-paced exercise. In the following chapters, we describe the three studies we have conducted to investigate the role of executive functioning on the self-paced exercise. First, we investigated the ergogenic effect of tramadol on physical and cognitive performance. Next, we attempt to understand the effects of transcranial direct current stimulation (tDCS) (applied to the left dorsolateral prefrontal cortex) on objective and subjective indices of exercise performance. Finally, we investigated the role of cognitive (executive) load during self-paced exercise.

2013 ◽  
Vol 2 (1) ◽  
Author(s):  
Francisco Javier Fuentes Farias

ABSTRACTIf we don't explain the role of language in the construction of places to live, their study will be incomplete; therefore the built space poses the challenge of defining a method of analysis that takes into account the emergence of cognitive processes in human being, of which perception and categorization of objects in space seems to be the most difficult to explain. And here is where the focus on language, from the point of view of the studies of complexity, admits to interpret and explain the evolution of the human capacity of build. In this sense, it is necessary to review the problem of in witch sense it can be said that language is innate or learned, and if the mind is a blank paper at birth, or has a genetic basis and how would be like. We observed the acquisition of language and cognition, and the construction of places to live, as the product of a cultural-genetic legacy. It is necessary to offer a point of view about the relationship between culture-nature, taking built places as a superior order and self-organizing subsystem: the built spaceRESUMENMientras no se exponga el papel del lenguaje en la construcción de lugares para vivir, su estudio estará incompleto; por ello, el espacio construido plantea el reto de definir un método de análisis que tome en cuenta el surgimiento de procesos cognitivos en la especie humana, de los cuales la percepción y categorización de los objetos en el espacio parece ser el más difícil de explicar. Y es aquí donde el enfoque en el lenguaje, desde el punto de vista de los estudios de la complejidad, permite interpretar y explicar la evolución de la capacidad constructiva del ser humano. En tal sentido, es necesario revisar el problema de en qué medida puede afirmarse que el lenguaje es innato o aprendido, y si la mente es un papel en blanco al nacer, o tiene una base genética y cómo sería ello. Se examina la adquisición del lenguaje y la cognición, y la construcción de lugares para vivir, como producto de una herencia genético-cultual. Se ofrece un punto de vista necesario acerca de la relación cultura-naturaleza, considerando los lugares construidos como subsistemas de un orden superior y auto-organizado: el espacio construido.


2018 ◽  
Vol 6 (6) ◽  
pp. 891-898 ◽  
Author(s):  
Mélissa C. Allé ◽  
Fabrice Berna ◽  
Dorthe Berntsen

Involuntary (spontaneously arising) autobiographical memories and involuntary future thoughts are common in daily life, but their frequency and emotional intensity vary among individuals. Theories of hallucination in schizophrenia have hypothesized a key role for involuntary memories; however, this idea has been little examined. We report two studies, designed to address the role of involuntary mental events in relation to hallucination proneness. Both studies showed that the self-reported frequency of involuntary memories and future projections was a robust predictor of hallucination proneness, even when controlling for measures of unwanted thoughts and rumination (Study 1) and measures of depression, dissociation, executive functions, imagery abilities, and personality (Study 2). In Study 1, the emotional intensity of involuntary memories and future projections also predicted hallucination proneness. The findings open a new avenue of research addressing the role of involuntary autobiographical memories and future projections in relation to hallucination and psychosis.


Author(s):  
Anna Kireenko ◽  
Mariya Izmailova

Self-employment in Russia characterized by a high level of shadow employment. The special tax regime was designed to carry out this activity from shadow. In this case, it is necessary to take into account the peculiarities of the taxpayers behavior and their tax culture. The purpose of the article is to study the tax culture, factors influencing its demonstration in the taxpayers behavior, as well as to identify the features of tax culture in the field of self-employment. The information base of the article composed documents regulating the activities of self-employed, statistical data on the quantity, structure and dynamics of self-employment in the Russia and other countries, sociological surveys of self-employed. The main difference in the interpretation of tax culture is associated with the definition of its subjects. Therefore, the role of subjective factors in the taxpayers behavior is often overestimated. It is concluded that it is necessary to consider the issue of the tax culture of the self-employed not only from the point of view of their mentality, but first of all from the point of view of the external conditions of their activity. Low and irregular incomes, lack of social guarantees and financial support lead to the formation of the self-employed tax culture in the conditions of «survival». In this regard, actions to improve the tax culture by influencing internal factors are ineffective.


2019 ◽  
Author(s):  
Darias Holgado ◽  
Daniel Sanabria

Self-paced exercise is any physical activity in which the effort has to be distributed over time in order to achieve the objective of the event. Hence, self-paced aerobic exercise is a goal-directed behaviour towards an objective that involves several cognitive processes. The aim of the present review is to ask the extent to which self-paced exercise might rely on executive functions and the empirical evidence of top-down processing on self-paced exercise. We discuss the evidence from different experimental manipulations showing a potential link between self-paced exercise and executive processing. We finally highlight some gaps in the literature and possible factors that might mediate the role of executive processing and self-paced exercise. Self-paced exercise is likely to be a highly complex process, in which a multitude of factors non-related to executive functions can also contribute to the ultimate decision to upregulate or downregulate exercise intensity.


Author(s):  
Barbara Azzopardi ◽  
Caroline Auffray ◽  
Christophe Kermarrec

ABSTRACTThe current study investigates the specific role of three executive functions in the explanation of performance variability on laboratory and naturalistic time-based prospective memory tasks in aging. Ninety people aged 18 to 80 years performed three executive tasks assessing inhibition, flexibility and updating, one laboratory time-based task and one naturalistic time-based task. The results indicate that age has a negative impact on the laboratory time-based task and a positive impact on the naturalistic task. The mediation analysis shows that inhibition and flexibility operate as a mediator in the negative relationship between age and the laboratory time-based task. Additionally, the hierarchical regression analyses show that, after controlling for age, none of the executive functions evaluated is predictive of performance of the naturalistic time-based task. Overall, these results seem to suggest that different cognitive processes underlie the performance on naturalistic and on laboratory time-based tasks. Future studies should confirm these results.


2016 ◽  
Vol 4 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Wouter Van der Brug ◽  
Katjana Gattermann ◽  
Claes H. De Vreese

This issue brings together papers that focus on the question of whether and in which ways the 2014 European Parliament elections were different from previous ones. This is important from the point of view of emerging scholarship on changes in the EU and from the point of view of the self-proclaimed ‘This time it’s different!’ slogan from the Parliament. The papers centre around three themes: 1) the role of the <em>Spitzenkandidaten</em>, 2) media and voters, and 3) electoral behaviour.


2021 ◽  
Vol 26 (4) ◽  
pp. 705-712
Author(s):  
Dmitrij I. Sharonov

The article analyzes some trends in the dynamics of deep mediatization processes. The phenomenon of saturation of standard formats for presenting news with unexpected references, which transform the communication system, is revealed. For the correct interpretation of the discovered phenomena, the concept of hypermedia is used as an aspect of deep mediatization of the relationship between the company and its stakeholders. The model of recursive communication is concretized. The central point is the thesis about the self-applicability of the recursive method of studying the communication field. The influence of digital platforms algorithms on the daily practices of users has been investigated. The conclusions are formulated from an ecological point of view, highlighting the importance of creating an effective environment for corporate relations. The author believes that the transition to trans-disciplinary methods of researching the problems of deep mediatization in the digital era is inevitable. The role of philosophical reflection in determining the key areas of research is especially emphasized.


2020 ◽  
Vol 11 (4) ◽  
pp. 230-247
Author(s):  
Lorenzo Magnani ◽  

In my opinion, it is only in the framework of a research dealing with abductive cognition that we can analyze important cognitive aspects of human and machine capacities. From the point of view of human (and of some animal, mammals for example) capacities the phenomenological concept of anticipation (seen as a kind of abduction), which is related to the problem of the spontaneous generation of spatiality and its three-dimensionality, will be central. I will describe that anticipations can be seen as types of visual and manipulative abduction and also fruitful to illustrate, in the case of human and machine capacities, the respective role of two kinds of strategic reasoning: locked and unlocked abductive strategies, which characterize the basic cognitive pro- cedure of “reading ahead”. The specificity of these contrasting inferential strategies is also related to their potentiality in producing different kinds of hypothetical outcomes, which in turn represent dissimilar levels of knowledge creativity. This diversity is also fundamental to depict the special character, the kind of creativity (often amazing), and the limits of current computational deep learning AI systems, such as AlphaGo, which realize abductive cognitive processes.


2019 ◽  
Author(s):  
Dunja Paunović ◽  
Danka Purić ◽  
Jovana Bjekić ◽  
Saša Filipović

AbstractRecent neuroimaging studies showed that in addition to the dorsolateral prefrontal cortex (dlPFC), the posterior parietal cortex (PPC) plays a significant role in higher cognitive processes such as executive functions. In this study we aimed to explore the neural underpinnings of executive function of updating by exploring the effects of transcranial direct current stimulation (tDCS) over dlPFC and PCC. Nineteen healthy right–handed participants took part in a cross–over sham–controlled experiment. All participants underwent three tDCS conditions (active tDCS over the left dlPFC; active tDCS over the left PPC; and sham) in counterbalanced order. Following tDCS participants completed the keep–track task, with parallel forms being used in different test–sessions. As a control measure, we used a choice reaction time task. Results showed no significant effects of tDCS regardless of the localization of stimulation. Our results are in contrast with results of other studies exploring prefrontal tDCS effects on updating and do not allow for deriving conclusions about the role of the left PPC in the ability to update information in working memory.


2019 ◽  
Vol 25 (2) ◽  
pp. 435-445 ◽  
Author(s):  
Elena M C Geronimi ◽  
Brenda Arellano ◽  
Janet Woodruff-Borden

Despite the important role of cognitions in mindful awareness, research on the cognitive processes underlying mindfulness in young populations is scarce. This study explores the association between the core executive functions (i.e. inhibition, working memory, and shifting) and mindfulness within the same model in a sample of children. Seventy-two parent–child dyads participated in the study. Difficulties with executive functioning and child mindfulness level were assessed. Inhibition, working memory, and shifting were significantly correlated with mindfulness. Furthermore, moderate to good fit was found in a model testing the association between mindfulness and the latent executive function variable composed by the three executive functions, and individual executive functions demonstrated significant loadings in relation to the latent variable. In a model relating mindfulness to each individual executive function, mindfulness was uniquely associated with inhibition, working memory, and shifting. The application of current theoretical models of mindfulness to child populations and clinical implications are discussed.


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