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Philosophy of mind: all studies

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Research

From Shamans to Sorcerers

December 3, 2021 Michael Winkelman

This paper presents an empirical model for interpreting evidence of ritual practices and alterations of consciousness, derived from a cross-cultural study. The four main types of religious practitioners—the healer complex (shaman, shaman/healer and healer), the medium, the priest and the sorcerer/witch—are described in terms of their characteristic roles, experience of altered states of...

No evidence that LSD microdosing affects recall or the balance between distracter resistance and updating

bioRxiv Preprint Server December 2, 2021 Sean James Fallon 2 citations preprint

The effect of low doses (<=20 μg) of LSD on working memory, in the absence of altered states of consciousness, remain largely unexplored. Given its possible effects on serotonin 5-HT2A receptors and dopaminergic signalling, it could be hypothesised that LSD microdoses modulate working memory recall. Moreover, in line with computational models, LSD microdoses could exert antagonistic effects on...

DOI: 10.1101/2021.12.02.470935 (opens in new tab) Full text (opens in new tab) Small Doses LSD Low Doses LSD Psychedelic microdosing Psychedelics +12

Sarah C. Weed, Florence M. Hallam and Emma D. Phinney, ‘A Study of the Dream-Consciousness’, American Journal of Psychology, 7 (1896), pp. 405–11.

December 1, 2021 Shane McCorristine

This chapter presents the results of a study, by the writers, of their own dreams and of the dream-records of four fellow students. The observations followed the general plan outlined by Miss Calkins, and this description of them lays special stress only on experiences which confirm her conclusions on disputed points or which contradict her results. The dreams were recorded during periods of...

Visual adaptation and 7T fMRI reveal facial identity processing in the human brain under shallow interocular suppression.

Neuroimage December 1, 2021 Runnan Cao, Chencan Qian, Shiwen Ren et al.

Face identity is represented at a high level of the visual hierarchy. Whether the human brain can process facial identity information in the absence of visual awareness remains unclear. In this study, we investigated potential face identity representation through face-identity adaptation with the adapting faces interocularly suppressed by Continuous Flash Suppression (CFS) noise, a modified...

DOI: 10.1016/j.neuroimage.2021.118622 (opens in new tab) Full text (opens in new tab) 7t FMRI Consciousness Continuous flash suppression Face-identity adaptation

Ambiguous Body Ownership Experience Caused by Feeling–judgement Conflict: Evidence from Subjective Measurement in Rubber Hand Illusion using Integrated Information Theory

bioRxiv December 1, 2021 Takayuki Niizato, Yuta Nishiyama, Kotaro Sakamoto et al. preprint

A bstract : Human body awareness is malleable and adaptive to changing contexts. The illusory sense of body-ownership has been studied since the publication of the rubber hand illusion, where ambiguous body ownership feeling, expressed as “the dummy hand is my hand even though that is not true”, was first defined. Phenomenologically, the ambiguous body ownership is attributed to a conflict...

Activation of brain-heart axis during REM sleep: a trigger for dreaming.

American Journal of Physiology. Regulatory, Integrative and Comparative Physiology December 1, 2021 Mimma Nardelli, Vincenzo Catrambone, Giulia Grandi et al.

Dreams may be recalled after awakening from sleep following a defined electroencephalographic pattern that involves local decreases in low-frequency activity in the posterior cortical regions. Although a dreaming experience implies bodily changes at many organ, system, and timescale levels, the entity and causal role of such peripheral changes in a conscious dream experience are unknown. We...

DOI: 10.1152/ajpregu.00306.2020 (opens in new tab) Full text (opens in new tab) Autonomic nervous system Brain-heart interaction Dreams Electroencephalography +1

Consciousness as a multidimensional phenomenon: implications for the assessment of disorders of consciousness

Neuroscience of Consciousness December 1, 2021 J. Walter

Abstract Disorders of consciousness (DoCs) pose a significant clinical and ethical challenge because they allow for complex forms of conscious experience in patients where intentional behaviour and communication are highly limited or non-existent. There is a pressing need for brain-based assessments that can precisely and accurately characterize the conscious state of individual DoC patients....

First-person access to decision-making using micro-phenomenological self-inquiry.

Scandinavian Journal of Psychology December 1, 2021 Terje Sparby, Anna-Lena Lumma, Friedrich Edelhäuser et al. 5 citations

Micro-phenomenology is a method for improving first-person reports of experience. Usually, micro-phenomenology is conducted using a second-person interviewer who guides someone investigating an experience. This has the advantage that the interviews can be done with untrained subjects. However, it is possible to perform micro-phenomenological self-inquiry, a form of self-interview technique,...

DOI: 10.1111/sjop.12766 (opens in new tab) Full text (opens in new tab) Decision making First-person reports Micro-phenomenology Reliability +1

Evolutionary Origin and the Development of Consciousness.

Neuroscience & Biobehavioral Reviews December 1, 2021 Ilya Kanaev 16 citations

This review seeks to combine advances in anthropology and neuroscience to investigate the adaptive value of human consciousness. It uses an interdisciplinary perspective on the origin of consciousness to refute the most common fallacies in considering consciousness, particularly, disregarding the evolutionary origin of the subjective reality in looking for the neural correlates of consciousness...

Double bookkeeping and schizophrenia spectrum: divided unified phenomenal consciousness.

European Archives of Psychiatry and Clinical Neuroscience December 1, 2021 Josef Parnas, Annick Urfer-Parnas, Helene Stephensen 59 citations

Eugen Bleuler, the founder of the concept of schizophrenia, pointed out that psychotic patients were able to live in two disjoint worlds (namely, the social, intersubjective world and the delusional world). He termed this phenomenon "double bookkeeping," but did not provide any conceptual elaboration of this phenomenon or its possible mechanisms. Double bookkeeping has been neglected in...

DOI: 10.1007/s00406-020-01185-0 (opens in new tab) Full text (opens in new tab) Auto-affection Consciousness Double bookkeeping Schizophrenia spectrum +1