Bioceramic Material Stimulation Affects Perceptual Consciousness: A Study Combining Descriptive Observation and Functional MRI Connectivity Analysis

There is still no clear explanation of the process of perceptual consciousness that connects our body with brain. Innovation on the technology of bioceramic has now advanced towards clinical applications, including rehabilitation of brain infarction, therapies of insomnia and migraine. To demonstrate how ‘resonant energy transfer through the bioceramic material with tempo sound and visible light spectrum’ (bioceramic material stimulation, BMS) non-invasively affects perceptual consciousness, we investigated the responses of participants to BMS on perceptual consciousness by questionnaire of subjective descriptions and analyzed resting state fMRI during BMS. There were 61.3% participants who were categorized as positive group with various types of perceptual consciousness. By setting a threshold value at ‘p<0.001’, enhanced connections of ‘parahippocampal gyrus to cerebellar lobule V’ and ‘angular gyrus to precuneus’ were found. However, decreased connection of ‘caudate nucleus to cerebellar lobule VIIb’ was found. We conclude that the most affected brain functions by BMS including somatosensory, audio-visual perception and social cognition. The analysis of functional connectivity during BMS may help us gain more knowledge of consciousness and related division of neuroscience in humans.

Invisible gorillas in the mind: Internal inattentional blindness and the prospect of introspection training

Much of high-level cognition appears inaccessible to consciousness. Countless studies have revealed mental processes -- like those underlying our choices, beliefs, judgments, intuitions, etc. -- which people do not notice or report, and these findings have had a widespread influence on the theory and application of psychological science. However, the interpretation of these findings is uncertain. Making an analogy to perceptual consciousness research, I argue that much of the unconsciousness of high-level cognition is plausibly due to internal inattentional blindness: missing an otherwise consciously-accessible internal event because your attention was elsewhere. In other words, rather than being structurally unconscious, many higher mental processes might instead be "preconscious", and would become conscious if a person attended to them. I synthesize existing indirect evidence for this claim, argue that it is a foundational and largely untested assumption in many applied interventions (such as therapy and mindfulness practices), and suggest that, with careful experimentation, it could form the basis for a long-sought-after science of introspection training.

More (Kinds of) Consciousness

This chapter argues that Nietzsche allows for other forms of consciousness besides reflective consciousness. In order to demonstrate this thesis, it introduces and discusses Nietzsche’s claim that reflective consciousness involves ‘falsification’. It identifies perceptual consciousness as a second kind of consciousness which is language-independent and characterized by pictorial content, and qualitative consciousness as a third kind of consciousness which Nietzsche only ascribes to pure sensations and raw feelings. It is argued that qualitative consciousness is the only kind of consciousness that does not involve ‘falsification’. It is further argued that affects are always conscious at least in the qualitative and, arguably, also in the perceptual sense, while drives—qua dispositions—are typically strictly unconscious.

Evidence accumulation relates to perceptual consciousness and monitoring

A fundamental scientific question concerns the neural basis of perceptual consciousness and perceptual monitoring resulting from the processing of sensory events. Although recent studies identified neurons reflecting stimulus visibility, their functional role remains unknown. Here, we show that perceptual consciousness and monitoring involve evidence accumulation. We recorded single-neuron activity in a participant with a microelectrode in the posterior parietal cortex, while they detected vibrotactile stimuli around detection threshold and provided confidence estimates. We find that detected stimuli elicited neuronal responses resembling evidence accumulation during decision-making, irrespective of motor confounds or task demands. We generalize these findings in healthy volunteers using electroencephalography. Behavioral and neural responses are reproduced with a computational model considering a stimulus as detected if accumulated evidence reaches a bound, and confidence as the distance between maximal evidence and that bound. We conclude that gradual changes in neuronal dynamics during evidence accumulation relates to perceptual consciousness and perceptual monitoring in humans.

The Transactional Horizons of Greta Thunberg

The paper aims at developing new understandings of agency, or capacity to make a difference, which is a central issue in childhood studies. Sixteen speeches delivered by climate activist Greta Thunberg between 2018 and 2019 are analyzed. The findings reveal 5 core reflexive operations (objectification, personification, sanctification, unification and diversification) underpinning the speeches. This is conducive to the hypothesis that Greta’s audience and the replications of demonstrations for climate justice are bound to 5 transactional horizons (activities, relations, values, images of self and motivations) identified as the symbolic landscapes channeling the social interactions in climate activism. Transactional horizons form a structure of intelligible categories linked to sensatory experience. These vectors of agency twist perceptual consciousness into a hierarchized reflective consciousness. The dominant perspective of agency within structure is challenged by this emerging paradigm of agency through structure, whereby the two terms are seen as fluid and sedimented states. Future directions are identified for interdisciplinary research, contributing to heightened awareness of recursive processes that may impact climate policies.

Generality and content-specificity in the study of the neural correlates of perceptual consciousness

The present paper was written as a contribution to ongoing methodological debates within the NCC project. We focus on the neural correlates of conscious perceptual episodes. Our claim is that the NCC notion, as applied to conscious perceptual episodes, needs to be reconceptualized. It mixes together the processing related to the perceived contents and the neural substrate of consciousness proper, i.e. mechanisms making the perceptual contents conscious. We thus propose that the perceptual NCC be divided into two constitutive subnotions. The paper elaborates the distinction, marshals some initial arguments in its favour, and sketches advantages of the proposed reconceptualization.

Epistemological Disjunctivism and the Value of Presence

Epistemological disjunctivists make two strong claims about perceptual experience's epistemic value: (1) experience guarantees the knowledgeable character of perceptual beliefs; (2) experience's epistemic value is “reflectively accessible”. In this paper I develop a form of disjunctivism grounded in a presentational view of experience, on which the epistemic benefits of experience consist in the way perception presents the subject with aspects of her environment. I show that presentational disjunctivism has both dialectical and philosophically fundamental advantages over more traditional expositions. Dialectically, presentational disjunctivism resolves a puzzle disjunctivists face in their posture vis-à-vis skeptical scenarios. More systematically, presentational disjunctivism provides an especially compelling view of disjunctivism as an internalist view of perceptual consciousness by explaining the way perceptual presence manifests the subject's rationality in a distinct way.