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This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact

Science: general issues --- Neurosciences --- resting-state fMRI --- fMRI denoising --- vascular modulation --- head motion --- arousal --- resting-state fMRI --- fMRI denoising --- vascular modulation --- head motion --- arousal

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Neurophysiological and psychological modifications induced by meditation practice have been consistently addressed by neuroscience. Training meditation practice induced plasticity (Barinaga, 2003; Knight, 2004), and as a consequence several benefit for mental and physical health (Davidson & McEwen, 2012), and cognitive performance. One goal of meditation is to achieve the light of consciousness observing with equanimity (the right distance) clouds of the mind wandering. This Frontiers Research Topic brings together studies from groups of authors whose research focus on neuropsychological systems involved in meditation demonstrating how meditation activates and can modify brain areas, cognitive mechanisms and well-being.

Meditation --- fMRI --- Meditation --- Attention --- Neuropsychology --- Expertise --- Meta-analysis --- Research. --- fMRI --- Meditation --- Attention --- Neuropsychology --- Expertise --- Meta-analysis

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Neurophysiological and psychological modifications induced by meditation practice have been consistently addressed by neuroscience. Training meditation practice induced plasticity (Barinaga, 2003; Knight, 2004), and as a consequence several benefit for mental and physical health (Davidson & McEwen, 2012), and cognitive performance. One goal of meditation is to achieve the light of consciousness observing with equanimity (the right distance) clouds of the mind wandering. This Frontiers Research Topic brings together studies from groups of authors whose research focus on neuropsychological systems involved in meditation demonstrating how meditation activates and can modify brain areas, cognitive mechanisms and well-being.

Meditation --- Research. --- fMRI --- Attention --- Neuropsychology --- Expertise --- Meta-analysis

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Neurophysiological and psychological modifications induced by meditation practice have been consistently addressed by neuroscience. Training meditation practice induced plasticity (Barinaga, 2003; Knight, 2004), and as a consequence several benefit for mental and physical health (Davidson & McEwen, 2012), and cognitive performance. One goal of meditation is to achieve the light of consciousness observing with equanimity (the right distance) clouds of the mind wandering. This Frontiers Research Topic brings together studies from groups of authors whose research focus on neuropsychological systems involved in meditation demonstrating how meditation activates and can modify brain areas, cognitive mechanisms and well-being.

Meditation --- Research. --- fMRI --- Attention --- Neuropsychology --- Expertise --- Meta-analysis

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There are several theories of executive function(s) that tend to share some theoretical overlap yet are also conceptually distinct, each bolstered by empirical data (Norman and Shallice, 1986; Shallice & Burgess, 1991; Stuss and Alexander, 2007; Burgess, Gilbert, & Dumentheil, 2007; Burgess & Shallice, 1996; Miyake et al., 2000). The notion that executive processes are supervisory, and most in demand in novel situations was an early conceptualization of executive function that has been adapted and refined over time (Norman & Shallice, 1986; Shallice, 2001; Burgess, Gilbert & Dumentheil, 2007). Presently there is general consensus that executive functions are multi-componential (Shallice, 2001), and are supervisory only in the sense that attention in one form or another is key to the co-ordination of other hierarchically organized ‘lower’ cognitive processes. Attention in this sense is defined as (i) independent but interrelated attentional control processes (Stuss & Alexander, 2007); (ii) automatic orientation towards stimuli in the environment or internally–driven thought (Burgess, Gilbert & Dumontheil, 2007); (iii) the automatically generated interface between tacit processes and strategic conscious thought (Barker, Andrade, Romanowski, Morton and Wasti, 2006; Morton and Barker, 2010); and (iv) distinct but interrelated executive processes that maintain, update and switch across different sources of information (Miyake et al., 2000).

One problem is that executive dysfunction or dysexecutive syndrome (Baddeley & Wilson, 1988) after brain injury typically produces a constellation of deficits across social, cognate, emotional and motivational domains that rarely map neatly onto theoretical frameworks (Barker, Andrade & Romanowski, 2004). As a consequence there is debate that conceptual theories of executive function do not always correspond well to the clinical picture (Manchester, Priestley & Jackson, 2004). Several studies have reported cases of individuals with frontal lobe pathology and impaired daily functioning despite having little detectable impairment on traditional tests of executive function (Shallice & Burgess, 1991; Eslinger & Damasio, 1985; Barker, Andrade & Romanowski, 2004; Andrés & Van der Linden, 2002; Chevignard et al., 2000; Cripe, 1998; Fortin, Godbout & Braun, 2003). There is also some suggestion that weak ecological validity limits predictive and clinical utility of many traditional measures of executive function (Burgess et al, 2006; Lamberts, Evans & Spikman, 2010; Barker, Morton, Morrison, McGuire, 2011). Complete elimination of environmental confounds runs the risk of generating results that cannot be generalized beyond constrained circumstances of the test environment (Barker, Andrade & Romanowski, 2004). Several researchers have concluded that a new approach is needed that is mindful of the needs of the clinician yet also informed by the academic debate and progress within the discipline (McFarquhar & Barker, 2012; Burgess et al., 2006). Finally, translational issues also confound executive function research across different disciplines (psychiatry, cognitive science, and developmental psychology) and across typically developing and clinical populations (including Autism Spectrum Disorders, Head Injury and Schizophrenia – Blakemore & Choudhury, 2006; Taylor, Barker, Heavey & McHale, 2013). Consequently, there is a need for unification of executive function approaches across disciplines and populations and narrowing of the conceptual gap between theoretical positions, clinical symptoms and measurement.

executive --- assessment --- fMRI --- disorders --- development --- pathology --- exercise --- default networks