The study of consciousness was banished from respectable science with the rise of behaviorism in the early 20th century. Beginning in the 1980s, however, researchers in cognitive science began to return to the topic (e.g., Baars, 1988; Chalmers, 1996; Crick & Koch, 1990; Dennett, 1991), In recent decades, there has been an explosion of research on the neurophysiological processes underlying...
Sleep and dreaming do not serve a single biological function, but are multifunctional. Their functions include memory consolidation and integration, emotion regulation, creativity and problem solving, and preparation for waking life. One promising level of description is that of dreaming as a virtual reality: The dreamer interacts with a simulated environment including other simulated avatars....
Schizophrenia is a multifaceted disorder with various symptoms including auditory hallucinations, egodisturbances, passivity phenomena, and delusions. Recent neurobiological approaches have focused on, especially, the abnormal contents of consciousness, the "substantive parts" as James said, to associate them with the neural mechanisms related to sensory, motor, and cognitive functions, and the...
The transition from a relaxed to a drowsy state of mind is often accompanied by hypnagogic experiences: most commonly, perceptual imagery, but also linguistic intrusions, i.e., the sudden emergence of unpredictable anomalies in the stream of inner speech. This study has sought to describe the contents of such intrusions, to verify their association with the progression of sleep onset, and to...
Two studies informed by the terror management health model were conducted to examine the question of how death cognition affects cannabis craving and whether actual cannabis smoking alleviates death cognitions. The first study examined whether priming thoughts of death are associated with subjective cannabis craving among 42 frequent cannabis users randomly assigned to either a mortality...
Koenderink (2014, Perception, 43, 1-6) has said most Perception readers are deluded, because they believe an 'All Seeing Eye' observes an objective reality. We trace the source of Koenderink's assertion to his metaphysical idealism, and point to two major weaknesses in his position-namely, its dualism and foundationalism. We counter with arguments from modern philosophy of science for the...
One of the major debates in classical Indian philosophy concerned whether consciousness is present or absent in dreamless sleep. The philosophical schools of Advaita Vedānta and Yoga maintained that consciousness is present in dreamless sleep, whereas the Nyāya school maintained that it is absent. Consideration of this debate, especially the reasoning used by Advaita Vedānta to rebut the Nyāya...
Vivid mental imagery occurs frequently in schizophrenia spectrum disorders (SSDs). Overlapping phenomena, such as obsessions or ruminations, are also frequent in other psychiatric disorders, raising significant diagnostic challenges. Unfortunately, contemporary operational psychopathology lacks the epistemological and phenomenological framework to address such questions. Using the resources of...
Concerned with scholarly, popular, and religious backdrops that understand the connection between psychedelics and mystical experiences to be devoid of moral concerns and ethical dimensions—a position supported empirically by the rise of acid fascism and psychedelic cults by the late 1960s—Psychedelic Mysticism: Transforming Consciousness, Religious Experiences, and Voluntary Peasants in...
Recent brain imaging studies in Psychedelic Brain Science are breaking new ground in our understanding of neurological substrate of biological consciousness in humans. The emerging field of inner experience and neuroscience is particularly well suited to the reexamination of the actions of psychedelics on subjective conscious experience. This approach is best understood as neurophenomenology....