International journal of cardiology
November 5, 2010
Caroline Peressutti, Juan M Martín-González, Juan M García-Manso et al.
The dynamic interactions among physiological rhythms imbedded in the heart rate signal can give valuable insights into autonomic modulation in conditions of reduced outward attention. Therefore, in this study we analyzed the heart rate variability (HRV) in different levels of practice in Zen meditation (Zazen). Nineteen subjects with variable experience took part in this study. In four special...
Progress in Neurobiology
November 2010
Matthijs G. Bossong, Raymond J.m. Niesink
Cannabis use during adolescence increases the risk of developing psychotic disorders later in life. However, the neurobiological processes underlying this relationship are unknown. This review reports the results of a literature search comprising various neurobiological disciplines, ultimately converging into a model that might explain the neurobiology of cannabis-induced schizophrenia. The...
Schizophrenia Research
October 30, 2010
Michael T Compton, Beth Broussard, Claire E. Ramsay et al.
Introduction Limited research indicates that pre-illness cannabis use may result in an earlier age at onset of psychosis, though little is known about the influence of prior cannabis use on the premorbid and prodromal phases. This study examined effects of prior or concurrent cannabis (as well as nicotine and alcohol) use on: (1) early adolescent (12–15 years) premorbid functioning, (2) late...
Advances in Consciousness Research
October 28, 2010
A fascinating cornucopia of new ideas, based on fundamentals of neurobiology, psychology, psychiatry and therapy, this book extends boundaries of current concepts of consciousness. Its eclectic mix will simulate and challenge not only neuroscientists and psychologists but entice others interested in exploring consciousness. Contributions from top researchers in consciousness and related fields...
Advances in Consciousness Research
October 28, 2010
Kai Vogeley
Experiencing oneself as autonomous agent who interacts with others depends on the cognitive capacities of self-consciousness as awareness of ones own mental states and social consciousness as knowledge of other persons minds. The study of neural correlates of these capacities elicits an impressive overlap with the so-called “default mode of brain function” as a neurobiological universal of...
Advances in Consciousness Research
October 28, 2010
Allan Hobson, Ursula Voss
In this essay, we develop our working hypothesis that consciousness in primates and humans is a state-dependent commodity that has at least two expressions. Waking and dreaming are two such states that differ in conscious awareness. In both states, we are perceptive and emotional. Whereas in dreaming, our thoughts are delusional, however, waking consciousness potentiates volition and...
Industrial Robot the international journal of robotics research and application
October 19, 2010
16 citations
It is almost universally agreed that consciousness and possession of a conscience are essential characteristics of human intelligence. While some believe it to be impossible to create artificial beings possessing these traits, and conclude that ultimate major goal of Artificial Intelligence is hopeless, this book demonstrates that not only is it possible to create entities with capabilities in...
The International Journal of Neuropsychopharmacology
October 14, 2010
María Juliana Orejarena, Laurence Lanfumey, Rafaël Maldonado et al.
38 citations
The serotonergic system appears crucial for (±)-3,4-methylenedioxymethamphetamine (MDMA) reinforcing properties. Current evidence indicates that serotonin 5-HT2A receptors (5-HT2ARs) modulate mesolimbic dopamine (DA) activity and several behavioural responses related to the addictive properties of psychostimulants. This study evaluated the role of 5-HT2ARs in MDMA-induced reinforcement and...
Oxford University Press eBooks
October 7, 2010
David J. Chalmers
38 citations
This chapter addresses the question: how can we isolate the neural correlate of consciousness (NCC) in the absence of a “consciousness meter,” which measures consciousness directly? The obvious answer is that we rely on verbal reports and other behavioral indicators of consciousness. Importantly, the use of these indicators tacitly relies on pre-experimental principles that connect these...
Journal of Neuroscience
October 6, 2010
Cullen L. Schmid, Laura M Bohn
172 citations
Hallucinogens mediate many of their psychoactive effects by activating serotonin 2A receptors (5-HT 2A R). Although serotonin is the cognate endogenous neurotransmitter and is not considered hallucinogenic, metabolites of serotonin also have high affinity at 5-HT 2A R and can induce hallucinations in humans. Here we report that serotonin differs from the psychoactive N -methyltryptamines by its...