Given the fundamental role that concepts play in theories of cognition, philosophers and cognitive scientists have a common interest in concepts. Nonetheless, there is a great deal of controversy regarding what kinds of things concepts are, how they are structured, and how they are acquired. This chapter offers a detailed high-level overview and critical evaluation of the main theories of concepts and their motivations. Taking into account the various challenges that each theory faces, the chapter also presents a novel approach (...) to concepts that is organized around two ideas. The first is a pluralistic view of differing types of conceptual structure. The second is a model that treats concepts as atomic representations that are linked to various types of conceptual structures. (shrink)

This introductory chapter attempts to clarify the philosophical, empirical, and theoretical bases on which a cognitive neuroscience approach to consciousness can be founded. We isolate three major empirical observations that any theory of consciousness should incorporate, namely (1) a considerable amount of processing is possible without consciousness, (2) attention is a prerequisite of consciousness, and (3) consciousness is required for some specific cognitive tasks, including those that require durable information maintenance, novel combinations of operations, or the spontaneous generation of intentional (...) behavior. We then propose a theoretical framework that synthesizes those facts: the hypothesis of a global neuronal workspace. This framework postulates that, at any given time, many modular cerebral networks are active in parallel and process information in an unconscious manner. An information becomes conscious, however, if the neural population that represents it is mobilized by top-down attentional amplification into a brain-scale state of coherent activity that involves many neurons distributed throughout the brain. The long-distance connectivity of these `workspace neurons' can, when they are active for a minimal duration, make the information available to a variety of processes including perceptual categorization, long-term memorization, evaluation, and intentional action. We postulate that this global availability of information through the workspace is what we subjectively experience as a conscious state. A complete theory of consciousness should explain why some cognitive and cerebral representations can be permanently or temporarily inaccessible to consciousness, what is the range of possible conscious contents, how they map onto specific cerebral circuits, and whether a generic neuronal mechanism underlies all of them. We confront the workspace model with those issues and identify novel experimental predictions. Neurophysiological, anatomical, and brain-imaging data strongly argue for a major role of prefrontal cortex, anterior cingulate, and the areas that connect to them, in creating the postulated brain-scale workspace. (shrink)

This study, which is based upon ethnographic data collected between 1999 and 2008 in Nepal, examines the connection between the shaman's altered states of consciousness (ASC; i.e., what goes on inside the healer's mind/brain) and therapeutic changes that take place in the patient's mind/body. Unlike other studies that primarily emphasize the shaman's internal psychological state, this article attempts to explain the role of the healer's ASC and elucidate how desired therapeutic changes depend upon patient–healer interactions. This question is explored in (...) the context of a healing ritual highlighting various aspects of the cosmology of Nepalese shamans. (shrink)

This paper explores Dilthey's "descriptive psychology "and its significance for the anthropology of consciousness. To do justice to the complexities of Dilthey's project a significant portion of the paper is devoted to an exposition of the basic tenets of his"descriptive psychology." Most notably, his views on"experience,""aconsciousness,""introspection,"and"objectified mind"are discussed before turning to examine his concept of the"acquired psychicnexus." After outlining these basic tenets the paper turns to explore how Dilthey's "descriptive psychology"can serve to shed light on current anthropological research on the (...) experience of pain. Finally, the paper concludes with a discussion of the contemporary relevance of Dilthey's project as it explores how his ideas may further inform current theoretical perspectives in anthropology about the relationship between consciousness, culture, and experience. (shrink)

The numerous perspectives offered on consciousness reflect a multifaceted phenomenon that results from a system of relations. An etymological approach identifies linguistic roots of the meanings of consciousness and illustrates their concern with self-referenced informational relationships of an organism with its environment, a "knowing system" formed in the epistemological relations between knower and known. Common elements of contemporary models suggest that consciousness involves interacting components of a system, including: attention-awareness; phenomenal experiences; self reference; action-behavior, including representations and learning; use of (...) information; interpretation of meaning; goal-directed behavior; and systems of social reference. It is suggested that manifestations of consciousness through the physical properties of the brain are universally represented in language. A preliminary systems model of consciousness is outlined with widespread lexical roots proposed as a culture-neutral framework for constructing theories of consciousness and identifying cognitive constructs which reveal the epistemological roots of consciousness within Indo-European traditions. (shrink)

This paper discusses archaeological, historical, and contemporary ethnographic evidence for the use of the San Pedro cactus in northern Peru as a vehicle for traveling between worlds and for imparting the “vista” (magical sight) necessary for shamanic healers to divine the cause of their patients' ailments. Using iconographic, ethnohistorical, and ethnographic evidence for the uninterrupted use of this sacred plant as a means of access to the Divine and as a tool for healing, it describes the relationship between San Pedro, (...) ancestor worship, water/fertility cults and also the common symbolic associations between San Pedro and wind-spirits. It closes by suggesting that the more than 2000 year time-depth of using this plant as a means for accessing the realms of Spirit and as a tool for healing should serve to challenge the unfortunate tendency in the contemporary United States to consider this plant as a “recreational drug.”. (shrink)

Arguments about the evolutionary function of phenomenal consciousness are beset by the problem of epiphenomenalism. For if it is not clear whether phenomenal consciousness has a causal role, then it is difficult to begin an argument for the evolutionary role of phenomenal consciousness. We argue that complexity arguments offer a way around this problem. According to evolutionary biology, the structural complexity of a given organ can provide evidence that the organ is an adaptation, even if nothing is known about the (...) causal role of the organ. Evidence from cognitive neuropsychology suggests that phenomenal consciousness is structurally complex in the relevant way, and this provides prima facie evidence that phenomenal consciousness is an adaptation. Furthermore, we argue that the complexity of phenomenal consciousness might also provide clues about the causal role of phenomenal consciousness. (shrink)

Human self-consciousness operates at different levels of complexity and at least comprises five different levels of representational processes. These five levels are nonconceptual representation, conceptual representation, sentential representation, meta-representation, and iterative meta-representation. These different levels of representation can be operationalized by taking a first-person-perspective that is involved in representational processes on different levels of complexity. We refer to experiments that operationalize a first-person-perspective on the level of conceptual and meta-representational self-consciousness. Interestingly, these experiments show converging evidence for a recruitment of (...) medial cortical and parietal regions during taking a first-person-perspective, even when operating on different degrees of complexity. These data lend support for the speculative hypothesis, that there exist a neural signature for human self-consciousness that is recruited independent from the degree of representational complexity to be performed. (shrink)

Biogenetic structural theory takes an entrainment view of the nature of consciousness. Human consciousness is a function of the brain and is mediated by networks of living neural cells that develop from initial, neurognostic models of self and world. Models interact or "entrain" as a constantly changing field of experience. The entire population of neural models that may potentially entrain within the field of consciousness is called the "cognized environment.” The organization of the network of cells (the "conscious network") mediating (...) consciousness operates according to a circadian cycle. Recurrent phases of consciousness are cognized and labelled. Transformations between phases of consciousness are often ritually controlled by society in order to control experiences that are in turn interpreted in terms of the society's cosmology. Recent developments in the biogenetic structural study of consciousness are summarized, including studies of transpersonal experiences, the development of consciousness in early life, and the advantages of neurophenomenology. (shrink)

This article examines the neurobiological basis of the healing power attributed to shamanic practices in the Andes and Brazil in light of the pharmacology of neurotransmitters and the new technological explorations of brain functioning. The psychotropic plants used in shamanic psychiatric cures interfere selectively with the intrinsic neuromediators of the brain. Mainly they may alter: (1) the neuroendocrine functioning through the adrenergic system by controlling stressful conditions, (2) the dopaminergic system in incentive learning and emotions incorporation, (3) the serotoninergic system (...) in modulating behaviors, and mood, and (4) basic functions implied in anxiety or depression. PET scans and functional magnetic resonance imaging studies of hypnotic trance and altered states of consciousness may provide a useful model for the neurophysiological phenomena of shamanic drum-and-dance trance. The reorganization of cortical areas and the direct interconnections between the prefrontal cortex and the dopaminergic reward centers in the limbic system are of particular significance for human social judgment and symbolic processing. Those centers—including the hypothalamus and the amygdala (associated with psychosomatic equilibrium, memory, and emotion) are enhanced. This arousal may be amplified in order to induce a cathartic crisis—the shamanic trance. It is suggested that through this holistic approach the shaman empirically interferes in neurobiological dysfunctions. (shrink)

This paper investigates the limits of the constructivist approach to the study of self and emotion in anthropology and outlines a viable alternative to this perspective, namely an experiential approach. The roots of the experiential and constructivist approaches to self and emotion in anthropology are traced to the work of William James and George Herbert Mead respectively. The limitations of the constructivist perspective are explored through a discussion of James's radical empirical doctrine, Anthony P. Cohen's work on creative self-consciousness, and (...) Arlie Hochschild's writings on ‘emotional discrepancy'. A discussion of transpersonal aspects of emotional experience, altered states of consciousness and the experience of ‘pure consciousness’ is used to suggest some further limits of this approach. Finally, connections between this work and some of James’ later writings on self and mystical experience are drawn and the implications of this work for the study of self and emotion are explored. (shrink)

Most of us would agree that the world of our experience is different than the extramental reality of which we are a part. Indeed, the evidence pertaining to cultural cosmologies around the globe suggests that virtually all peoples recognize this distinction—hence the focus upon the "hidden" forces behind everyday events. That said, the struggle to comprehend the relationship between our consciousness and reality, even the reality of ourselves, has led to controversy and debate for centuries in Western philosophy. In this (...) article, we address this problem from an anthropological perspective and argue that the generative route to a solution of the experience–reality "gap" is by way of an anthropologically informed cultural neurophenomenology . By this we mean a perspective and methodology that applies a phenomenology that controls for cultural variation in perception and interpretation, coupled with the latest information from the neurosciences about how the organ of experience—the brain—is structured. (shrink)

The question of whether evolutionary theories provide a useful approach to investigating the highest potentials of human consciousness and spiritual growth is addressed. Finding one-dimensional models overly simplistic, we have proposed a three-level model in which "states of mind" , "states of consciousness" , and "structures of consciousness" share a hierarchical relationship. States of consciousness contextualize various states of mind and structures of consciousness contextualize states of consciousness. Our model draws upon the "grand evolutionary synthesis," a phrase used in some (...) approaches to systems inquiry and complexity theory, and utilizes chaos theory terminology as well, rather than other evolutionary concepts. (shrink)