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Introduction Vagally mediated heart rate variability is an index of autonomic nervous system activity that is associated with a large variety of outcome variables including psychopathology and self-regulation. While practicing heart rate variability biofeedback over several weeks has been reliably associated with a number of positive outcomes, its acute effects are not well known. As the strongest association with vagally mediated heart rate variability has been found particularly within the attention-related subdomain of self-regulation, we investigated the acute effect of heart rate variability biofeedback on attentional control using the revised Attention Network Test.
Methods Fifty-six participants were tested in two sessions. In one session each participant received a heart rate variability biofeedback intervention, and in the other session a control intervention of paced breathing at a normal ventilation rate. After the biofeedback or control intervention, participants completed the Attention Network Test using the Orienting Score as a measure of attentional control.
Results Mixed models revealed that higher resting baseline vagally mediated heart rate variability was associated with better performance in attentional control, which suggests more efficient direction of attention to target stimuli. There was no significant main effect of the intervention on attentional control. However, an interaction effect indicated better performance in attentional control after biofeedback in individuals who reported higher current stress levels.
Discussion The results point to acute beneficial effects of heart rate variability biofeedback on cognitive performance in highly stressed individuals. Although promising, the results need to be replicated in larger or more targeted samples in order to reach stronger conclusions about the effects.
Neuroenhancement (NE), the use of substances as a means to enhance performance, has garnered considerable scientific attention of late. While ethical and epidemiological publications on the topic accumulate, there is a lack of theory-driven psychological research that aims at understanding psychological drivers of NE. In this perspective article we argue that self-control strength offers a promising theory-based approach to further understand and investigate NE behavior. Using the strength model of self-control, we derive two theory-driven perspectives on NE-self-control research. First, we propose that individual differences in state/trait self-control strength differentially affect NE behavior based on one's individual experience of NE use. Building upon this, we outline promising research questions that (will) further elucidate our understanding of NE based on the strength model's propositions. Second, we discuss evidence indicating that popular NE substances (like Methylphenidate) may counteract imminent losses of self-control strength. We outline how further research on NE's effects on the ego-depletion effect may further broaden our understanding of the strength model of self-control.
Know Your Preferences
(2018)
Theory and research on self-regulation is dominated by a social-cognitive perspective that places an emphasis on postdecisional (i.e., volitional) control processes of goal-maintenance in response to dual-motive conflict. In the current contribution, we focus on research on self-regulation that acknowledges the affective fundamentals of motivated action, and we highlight processes of goal selection as vital parts of self-regulation. From our perspective of motivational competence, affective and cognitive processes work together rather than oppose each other in self-regulation, rendering effortless rather than effortful goal pursuit as the hallmark of efficient human action. A precondition for such motive- and self-congruent goal pursuits is that individuals have insight into their basic preferences and (can) act accordingly. Therefore, we address capacities, such as mindfulness, which may take effect in predecisional (i.e., motivational) action phases, thereby determining all subsequent action processes.
Keeping the breath in mind
(2021)
Scientific interest in the brain and body interactions has been surging in recent years. One fundamental yet underexplored aspect of brain and body interactions is the link between the respiratory and the nervous systems. In this article, we give an overview of the emerging literature on how respiration modulates neural, cognitive and emotional processes. Moreover, we present a perspective linking respiration to the free-energy principle. We frame volitional modulation of the breath as an active inference mechanism in which sensory evidence is recontextualized to alter interoceptive models. We further propose that respiration-entrained gamma oscillations may reflect the propagation of prediction errors from the sensory level up to cortical regions in order to alter higher level predictions. Accordingly, controlled breathing emerges as an easily accessible tool for emotional, cognitive, and physiological regulation.
Executive functions (EFs) may help children to regulate their food-intake in an “obesogenic” environment, where energy-dense food is easily available. There is mounting evidence that overweight is associated with diminished hot and cool EFs, and several longitudinal studies found evidence for a predictive effect of hot EFs on children’s bodyweight, but longitudinal research examining the effect of cool EF on weight development in children is still scarce. The current 3-year longitudinal study examined the effect of a latent cool EF factor, which was based on three behavioral EF tasks, on subsequent mean levels and 3-year growth trajectories of body-mass-index z-scores (zBMI). Data from a large sample of children, with zBMI ranging from normal weight to obesity (n = 1474, aged 6–11 years at T1, 52% girls) was analyzed using structural-equation modeling and linear latent growth-curve modeling. Cool EF at the first wave (T1) negatively predicted subsequent zBMI and zBMI development throughout the 3-year period in middle childhood such that children with better EF had a lower zBMI and less steep zBMI growth. These effects were not moderated by the children’s age or gender. In conclusion, as early as in middle childhood, cool EFs seem to support the self-regulation of food-intake and consequently may play a causal role in the multifactorial etiology of overweight.