Abstract A fundamental component of conscious experience involves a first-person perspective (1PP), characterized by the experience of being a subject and of being directed at the world. Extending earlier work on multisensory perceptual mechanisms of 1PP, we here asked whether the experienced direction of the 1PP (i.e. the spatial direction of subjective experience of the world) depends on...
Trance states have long been used within a healing context in India. The use of chant, evocation of trance through ritual, and altered states achieved through meditation has been a means for self-realization, psychological well-being, and increasing health. Indigenous psychologies have elucidated various types of states of consciousness. Folk healing traditions often utilize trance as a means...
The focus of the present article is on sketching a psychopathology of the body in schizophrenia and linking it to brain activity. This is done providing converging data from psychopathological evidence (phenomenal), phenomenological contructs (trans-phenomenal) and neuroscientific measures (pre-phenomenal). The phenomenal level is the detailed documentation of the patients' subjective anomalous...
Lysergic acid diethylamide (LSD) is the prototypical psychedelic drug, but its effects on the human brain have never been studied before with modern neuroimaging. Here, three complementary neuroimaging techniques: arterial spin labeling (ASL), blood oxygen level-dependent (BOLD) measures, and magnetoencephalography (MEG), implemented during resting state conditions, revealed marked changes in...
This paper provides an analysis of meditation as a new way of managing stress, tension and crisis. Contemporary psychology of mediation has gained worldwide significance and acceptance to seek solace and solutions for modern problems. Originally mediation was meant to help deepen understanding of the mystical and sacred forces of life. But, these days, it is commonly used for relaxation and...
Shamanic practices frequently create hypnotic-like states, with altered states of consciousness, heightened suggestibility, and a perception of an abundance of meaning in everyday events. Jaguar medicine (JM) is a form of shamanic healing with roots in the indigenous cultures of South and Central America. Recent years have seen increasing interest in translating shamanic practices for use in...
Ayahuasca is the Quechua name for a tea obtained from the vine Banisteriopsis caapi, and used for ritual purposes by the indigenous populations of the Amazon. The use of a variation of the tea that combines B. caapi with the leaves of the shrub Psychotria viridis has experienced unprecedented expansion worldwide for its psychotropic properties. This preparation contains the psychedelic 5-HT2A...
Altered states of consciousness (ASCs) are perceptual states, such as dream, delirium, or hallucination that fall beyond a commonly accepted normal waking consciousness. This article discusses Entoptic Phenomena in Audio, a collection of four electroacoustic compositions that are based upon the author’s research regarding these states. The compositional process utilised involves consideration...
Abstract This article explores the use of intoxicants by a community of Kulina Indians in western Brazil. I suggest that Kulina intoxication through alcohol, tobacco, and ayahuasca is best understood as a form of semiotic appropriation of the identity of cosmological “others,” including animal spirits, creator beings, other Indian groups, and Brazilians. I consider how embodying practices, such...
Increased amygdala reactivity might lead to negative bias during emotional processing that can be reversed by antidepressant drug treatment. However, little is known on how N-methyl-d-aspartate (NMDA) receptor antagonism with ketamine as a novel antidepressant drug target might modulate amygdala reactivity to emotional stimulation. Using functional magnetic resonance imaging (fMRI) and...