The belief in free will has been frequently challenged since Benjamin Libet published his famous experiment in 1983. Although Libet’s experiment is highly dependent upon subjective reports, no study has been conducted that focused on a first-person or introspective perspective of the task. We took a neurophenomenological approach in an N = 1 study providing reliable and valid measures of the first-person perspective in conjunction with brain dynamics. We found that a larger readiness potential is attributable to more frequent occurrences (...) of self-initiated movements during negative deflections of the slow cortical potentials . These negative deflections occur in parallel with an inner impulse reported by an expert meditator which may in turn lead to a voluntary act. We demonstrate in this proof-of-principle approach that the first-person perspective obtained by an expert meditator in conjunction with neural signal analysis can contribute to our understanding of the neural underpinnings of voluntary acts. (shrink)

On several current views, including those of Matthew Kieran, Gary Iseminger, Jerrold Levinson, and Noël Carroll, aesthetic appreciation or experience involves second-order awareness of one’s own mental processes. But what if it turns out that we don’t have introspective access to the processes by which our aesthetic responses are produced? I summarize several problems for introspective accounts that emerge from the psychological literature: aesthetic responses are affected by irrelevant conditions; they fail to be affected by relevant conditions; we are ignorant (...) of their causes and thus confabulate in explaining them; our attempts to offer explanations change our preferences; and the preferences we form after explanation are lower in quality. I suggest that by distinguishing introspective awareness of mental processes from introspective awareness of mental states, we can safeguard a worthwhile concept of aesthetic experience. In addition, we should recognize that theoretical, rather than introspective, understanding of our mental processes may play a valuable role in aesthetic appreciation. (shrink)

Participants were unknowingly exposed to complex regularities in a working memory task. The existence of implicit knowledge was subsequently inferred from a preference for stimuli with similar grammatical regularities. Several affective traits have been shown to influence AGL performance positively, many of which are related to a tendency for automatic responding. We therefore tested whether the mindfulness trait predicted a reduction of grammatically congruent preferences, and used emotional primes to explore the influence of affect. Mindfulness was shown to correlate negatively (...) with grammatically congruent responses. Negative primes were shown to result in faster and more negative evaluations. We conclude that grammatically congruent preference ratings rely on habitual responses, and that our findings provide empirical evidence for the non-reactive disposition of the mindfulness trait. (shrink)

Although research has found that long-term mindfulness meditation practice promotes executive functioning and the ability to sustain attention, the effects of brief mindfulness meditation training have not been fully explored. We examined whether brief meditation training affects cognition and mood when compared to an active control group. After four sessions of either meditation training or listening to a recorded book, participants with no prior meditation experience were assessed with measures of mood, verbal fluency, visual coding, and working memory. Both interventions (...) were effective at improving mood but only brief meditation training reduced fatigue, anxiety, and increased mindfulness. Moreover, brief mindfulness training significantly improved visuo-spatial processing, working memory, and executive functioning. Our findings suggest that 4 days of meditation training can enhance the ability to sustain attention; benefits that have previously been reported with long-term meditators. (shrink)

Previous research has shown that ruminative thoughts are associated with impairments in well-being. However, the direction of this relationship is unclear. There are findings indicating both unidirectional and bidirectional (i.e., reciprocal) relationships. The question therefore arises how rumination and well-being are related. Furthermore, previous findings on the relationship between rumination and problem solving are heterogeneous. However, since ruminative thinking involves an increased use of resources to solve a problem, it is assumed that these resources (i.e., attention and effort) can positively (...) mediate the relationship between rumination and problem solving. On the other hand, it is also assumed that the negative effects of rumination on well-being negatively mediate the relation between rumination and problem solving. In Study 1 and 2 of the present dissertation, therefore, the relationship between rumination, well-being, resources (i.e., attention and effort), and problem solving was examined in a longitudinal way. The assumption that rumination also has a functional side is further supported by the hypothesis that ruminative thoughts can also lead to more constructive and deliberative thoughts about a problem, which in turn can foster the positive reappraisal of an event and ultimately personal growth. Study 3 of the present dissertation therefore examined to what extent ruminative thoughts can also lead to more constructive coping strategies. Furthermore, it was analysed to what extent the appraisal of an event as threatening and uncontrollable can cause the occurrence of ruminative thoughts. In summary, this work focuses on the functional and dysfunctional aspects of ruminative thoughts related to human well-being and problem solving. (shrink)

In this chapter, I propose the mechanism of cognitive enhancement based on studies of cognitive-enhancing drugs and behavioral training. I argue that there are mechanistic differences between cognitive-enhancing drugs and behavioral training due to their different enhancing effects. I also suggest possible mechanisms for cognitive-enhancing drugs and behavioral training and for the synergistic effects of their simultaneous application.

Educators continually ask about the best means to engage students and how best to capture attention. These concerns often make the problematic assumption that students can directly govern their own attention. In order to address the role and limits of attention in education, some theorists have sought to recover the significance of silence or mindfulness in schools, but I argue that these approaches are too simplistic. A more fundamental examination of our conceptions of identity and agency reveals a Cartesian and (...) Kantian foundationalism. This assumed subjectivity establishes too simplistic a conception of the agency of students in directing attention. I critically engage with these conceptions by drawing on a range of diverse sources, primarily modern Continental philosophy and Christian mystical theology. (shrink)

We have studied a number of long-term meditators in previous studies. The purpose of this study was to determine if there are differences in baseline brain function of experienced meditators compared to non-meditators. All subjects were recruited as part of an ongoing study of different meditation practices. We evaluated 12 advanced meditators and 14 non-meditators with cerebral blood flow SPECT imaging at rest. Images were analyzed with both region of interest and statistical parametric mapping. The CBF of long-term meditators was (...) significantly higher compared to non-meditators in the prefrontal cortex, parietal cortex, thalamus, putamen, caudate, and midbrain. There was also a significant difference in the thalamic laterality with long-term meditators having greater asymmetry. The observed changes associated with long-term meditation appear in structures that underlie the attention network and also those that relate to emotion and autonomic function. (shrink)

Contemplative practices, such as meditation and yoga, are increasingly popular among the general public and as topics of research. Beneficial effects associated with these practices have been found on physical health, mental health, and cognitive performance. However, studies and theories that clarify the underlying mechanisms are lacking or scarce. This theoretical review aims to address and compensate this scarcity. We will show that various contemplative activities have in common that breathing is regulated or attentively guided. This respiratory discipline in turn (...) could parsimoniously explain the physical and mental benefits of contemplative activities through changes in autonomic balance. We propose a neurophysiological model that explains how these specific respiration styles could operate, by phasically and tonically stimulating the vagal nerve: respiratory vagal nerve stimulation. The vagal nerve, as a proponent of the parasympathetic nervous system, is the prime candidate in explaining the effects of contemplative practices on health, mental health, and cognition. We will discuss implications and limitations of our model. (shrink)

Meditation is an umbrella term for a number of mental training practices designed to improve the monitoring and regulation of attention and emotion. Some forms of meditation are now being used for clinical intervention. To accompany the increased clinical interest in meditation, research investigating the neural basis of these practices is needed. A central hypothesis of contemplative neuroscience is that meditative states, which are unique on a phenomenological level, differ on a neurophysiological level. To identify the electrophysiological correlates of meditation (...) practice, the electrical brain activity of highly skilled meditators engaging in one of six meditation styles was recorded. A mind-wandering task served as a control. Lempel–Ziv complexity showed differences in nonlinear brain dynamics during meditation compared with mind wandering, suggesting that meditation, regardless of practice, affects neural complexity. In contrast, there were no differences in power spectra at six different frequency bands, likely due to the fact that participants engaged in different meditation practices. Finally, exploratory analyses suggest neurological differences among meditation practices. These findings highlight the importance of studying the electroencephalography correlates of different meditative practices. (shrink)

Over the past two decades, there has been a growing interest in the use of meditation to improve cognitive performance, emotional balance, and well-being. As a consequence, research into the psychological effects and neural mechanisms of meditation has been accumulating. Whether and how meditation affects decision making is not yet clear. Here, we review evidence from behavioral and neuroimaging studies and summarize the effects of meditation on social and non-social economic decision making. Research suggests that meditation modulates brain activities associated (...) with cognitive control, emotion regulation and empathy, and leads to improved non-social and social decision making. Accordingly, we propose an integrative model in which cognitive control, emotional regulation, and empathic concern mediate the effects of meditation on decision making. This model provides insights into the mechanisms by which meditation affects the decision making process. More evidence is needed to test our explanatory model and to explore the function of specific brain areas and their interactive effects on decision making during meditation training. (shrink)