March 2, 2021
Andrew C. Papanicolaou
In this chapter, the highlights of the history of the ritual use of psychedelic substances are reviewed and the most common ones are briefly sketched as a preparation for subsequent discussion of the neurochemical correlates of mystical states. Specifically, the use of psychedelics among the ancient Hindus, mentioned extensively in the Vedas; among the members of the Native American Church and...
arXiv Preprint Archive
March 1, 2021
Chika Koyama, Taichi Haruna, Kazuto Yamashita
preprint
We recently developed original electroencephalogram indices focusing on microwaves of flattish period (named $τ$), which correlated with volatile anesthesia concentration in dogs. However, this mechanism remains unclear. $τ$ was defined as a subthreshold wave and burst wave was defined as an above-threshold wave. This study shows that these indices well quantified the morphological features of...
Consciousness and Cognition
March 2021
Carla Dance, M Jaquiery, D M Eagleman et al.
For people with aphantasia, visual imagery is absent or markedly impaired. Here, we investigated the relationship between aphantasia and two other neurodevelopmental conditions also linked to imagery differences: synaesthesia, and autism. In Experiment 1a and 1b, we asked whether aphantasia and synaesthesia can co-occur, an important question given that synaesthesia is linked to strong imagery....
Physics World
March 1, 2021
Betony Adams, Francesco Petruccione
2 citations
Do quantum effects play a role in consciousness? Or are the two areas being linked simply because they are both difficult to understand? Betony Adams and Francesco Petruccione explore this developing, and contentious, field of quantum biophysics
Culture, Medicine, and Psychiatry
March 1, 2021
Tony V Pham, Bonnie N. Kaiser, Rishav Koirala et al.
Despite extensive ethnographic and qualitative research on traditional healers in Nepal, the role of traditional healers in relation to mental health has not been synthesized. We focused on the following clinically based research question, "What are the processes by which Nepali traditional healers address mental well-being?" We adopted a scoping review methodology to maximize the available...
European Neuropsychopharmacology
March 2021
Torsten Passie, Hans-Anton Adams, Frank Logemann et al.
Ketamine and its (S)-enantiomer show distinct psychological effects that are investigated in psychiatric research. Its antidepressant activity may depend on the extent and quality of these psychological effects which may greatly differ between the enantiomers. Previous data indicate that the (S)-ketamine isomer is a more potent anesthetic than (R)-ketamine. In contrast, in subanesthetic doses...
Wiley Interdisciplinary Reviews: Cognitive Science
March 1, 2021
Peter Langland-Hassan
Inner speech travels under many aliases: the inner voice, verbal thought, thinking in words, internal verbalization, "talking in your head," the "little voice in the head," and so on. It is both a familiar element of first-person experience and a psychological phenomenon whose complex cognitive components and distributed neural bases are increasingly well understood. There is evidence that...
Journal of Psychopharmacology
March 1, 2021
Antonio Inserra, Danilo de Gregorio, Tamim Rezai et al.
42 citations
Background: The reticular thalamus gates thalamocortical information flow via finely tuned inhibition of thalamocortical cells in the mediodorsal thalamus. Brain imaging studies in humans show that the psychedelic lysergic acid diethylamide (LSD) modulates activity and connectivity within the cortico-striato-thalamo-cortical (CSTC) circuit, altering consciousness. However, the...
Journal of Contemporary Iraq & the Arab World
March 1, 2021
Saleem Al-Bahloly
1 citation
This article details how existential phenomenology, mystical theology and abstraction came together in the practice of Shakir Hassan Al Saʿid in the 1960s in order to produce a grammar of experience that might establish some human relationship to a universe rendered meaningless by scientific developments.
Философская мысль
March 1, 2021
Лапатин Вадим Альбертович
The subject of this research is the method of phenomenological reduction developed by E. Husserl. The article examines the difficulties faced by this method, as well as observes the reception of Husserl’s ideas by the adherents of phenomenology in the XX century. It is substantiated that the phenomenological reduction is unrealizable by theoretical means due to impossibility to comply in the...