A physiologically based approach to consciousness

The nature of a scientific theory of consciousness is defined by comparison with scientific theories in the physical sciences. The differences between physical, algorithmic and functional complexity are highlighted, and the architecture of a functionally complex electronic system created to relate system operations to device operations is compared with a scientific theory. It is argued that there are two qualitatively different types of functional architecture: (a) electronic systems have the instruction architecture based on exchange of unambiguous information between functional components, and (b) biological brains have been constrained by natural selection pressures into the recommendation architecture based on exchange of ambiguous information. The mechanisms by which a recommendation architecture could heuristically define its own functionality are described, and compared with memory in biological brains. Dream sleep is interpreted as the mechanism for minimizing information exchange between functional components in a heuristically defined functional system. The functional role of consciousness of self is discussed, and the route by which the experience of that function described at the psychological level can be related to physiology through a functional architecture is outlined.     

A quantum approach to visual consciousness

A theoretical approach relying on quantum computation in microtubules within neurons can potentially resolve the enigmatic features of visual consciousness, but raises other questions. For example, how can delicate quantum states, which in the technological realm demand extreme cold and isolation to avoid environmental ‘decoherence’, manage to survive in the warm, wet brain? And if such states could survive within neuronal cell interiors, how could quantum states grow to encompass the whole brain? We present a physiological model for visual consciousness that can accommodate brain-wide quantum computation according to the Penrose–Hameroff ‘Orch OR’ model. In this view, visual consciousness occurs as a series of several-hundred-millisecond epochs, each comprising ‘crescendo sequences’ of quantum computations occurring at ∼40 Hz.     

The functional role of consciousness: A phenomenological approach

In this paper, a theoretical account of the functional role of consciousness in the cognitive system of normal subjects is developed. The account is based upon an approach to consciousness that is drawn from the phenomenological tradition. On this approach, consciousness is essentially peripheral self-awareness, in a sense to be duly explained. It will be argued that the functional role of consciousness, so construed, is to provide the subject with just enough information about her ongoing experience to make it possible for her to easily obtain as much information as she may need. The argument for this account of consciousness' functional role will proceed in three main stages. First, the phenomenological approach to consciousness as peripheral self-awareness will be expounded and endorsed. Second, an account of the functional role of peripheral perceptual awareness will be offered. Finally, the account of the functional role of peripheral self-awareness will be obtained by straightforward extension from the functional role of peripheral perceptual awareness. This revised version was published online in June 2006 with corrections to the Cover Date.     

A biphasic relational approach to the evolution of human consciousness

Background/objectiveHuman consciousness is arguably unique, and its features are hard to explain. Continuous and discrete accounts of consciousness are commonly viewed as incompatible, but both have limitations. Continuous accounts cannot readily account for what appears to be unique about human consciousness; discrete accounts have a hard time explaining how human consciousness could have evolved. The present position paper shows how both continuous and discontinuously elements can be combined.MethodA biphasic model is constructed by unifying complex systems theory, the evolution of symbolic reasoning as a relational extension of human cooperation, and evolutionary science. The application of this approach to modern views of consciousness is then explored.ResultsOur analysis suggests that human consciousness may be viewed as a discontinuous event, that emerged from continuous foundations. This biphasic account contains processes that can be targeted clinically. For example, developmentally delayed children with problems in consciousness may be helped by targeting the processes the present account suggests are important at different levels of complexity.ConclusionsThis biphasic relational approach fits with the evolutionary record and with data on human cognitive development. It may be useful in guiding clinical intervention.     

The relationship of psychology to delinquency: a comprehensive approach

Three psychological perspectives on youth deviance are presented. Two traditional theoretical approaches to understanding and intervening in delinquent behavior are explained. A third perspective, a youth advocacy approach, is described and expanded upon in the light of cognitive developmental theory. Youth's developmental needs and their opportunity to complete developmental tasks are stressed.     

The nature of primary consciousness. A new synthesis

While the philosophical puzzles about “life” that once confounded biology have all been solved by science, much of the “mystery of consciousness” remains unsolved due to multiple “explanatory gaps” between the brain and conscious experience. One reason for this impasse is that diverse brain architectures both within and across species can create consciousness, thus making any single neurobiological feature insufficient to explain it. We propose instead that an array of general biological features that are found in all living things, combined with a suite of special neurobiological features unique to animals with consciousness, evolved to create subjective experience. Combining philosophical, neurobiological and evolutionary approaches to consciousness, we review our theory of neurobiological naturalism that we argue closes the “explanatory gaps” between the brain and subjective experience and naturalizes the “experiential gaps” between subjectivity and third-person observation of the brain.     

The comprehensive approach to analyzing multivariate constructs

Many psychological constructs of interest to personality psychologists, such as personality, behavior, and emotions, are made up of many variables. Moreover, similarity metrics, such as self-other agreement, profile similarity, or behavioral consistency, result from calculations conducted across many variables. When analyzed using a comprehensive approach, such multivariate constructs present unique analytic challenges. Such challenges are not well addressed in standard graduate statistics textbooks or presently available in standard commercial software. This article introduces the ‘multicon’ package, freely available in the R statistical package, designed to aid researchers interested in taking a comprehensive approach to analyzing multivariate constructs. Realistic examples from personality psychology are provided to demonstrate the utility of this package.     

A comprehensive and systematic approach to parent education

Abstract

This paper emphasizes the importance of parent education, particularly in our current rapidly changing society. The history of parent education is briefly reviewed and a new program called STEP, Systematic Training for Effective Parenting is discussed in detail.     

Open and closed loops: A computational approach to attention and consciousness

Within recent years, researchers have proposed the independence of attention and consciousness on both empirical and conceptual grounds. However, the elusive nature of these constructs complicates progress in the investigation of their interaction. We present a framework within which we conceptualize attention and consciousness in computational terms. Here, the concepts are consi-dered as large-scale, functionally and structurally different processes, embedded in a biologically inspired architecture, spanning the full arc from stimulus to response. Our architecture assumes a general independence of attention and consciousness, but supposes strong interactions. Furthermore, it addresses the developmental aspect, stressing that these functions have to gradually develop through learning.     

The pars triangularis in dyslexia and ADHD: A comprehensive approach

Limited research has been conducted on the structure of the pars triangularis (PT) in dyslexia despite functional neuroimaging research finding it may play a role in phonological processing. Furthermore, research to date has not examined PT size in ADHD even though the right inferior frontal region has been implicated in the disorder. Hence, one of the purposes of this study was to examine the structure of the PT in dyslexia and ADHD. The other purposes included examining the PT in relation to overall expressive language ability and in relation to several specific linguistic functions given language functioning often is affected in both dyslexia and ADHD. Participants included 50 children: 10 with dyslexia, 15 with comorbid dyslexia/ADHD, 15 with ADHD, and 10 controls. Using a 2 (dyslexia or not) × 2 (ADHD or not) MANCOVA, findings revealed PT length and shape were comparable between those with and without dyslexia. However, children with ADHD had smaller right PT lengths than those without ADHD, and right anterior ascending ramus length was related to attention problems in the total sample. In terms of linguistic functioning, presence of an extra sulcus in the left PT was related to poor expressive language ability. In those with adequate expressive language functioning, left PT length was related to phonological awareness, phonological short-term memory and rapid automatic naming (RAN). Right PT length was related to RAN and semantic processing. Further work on PT morphology in relation to ADHD and linguistic functioning is warranted.     

The origin of language: A scientific approach to the study of man

The Enlightenment regarded language as one of the most significant achievements of man. Consequently inquiries into the origin and development of language play a central role in eighteenth-century moral philosophy. This new science of man consciously adopts the method of analysis and synthesis used in the natural sciences of the time. In moral philosophy, analysis corresponds to the search for the basic principles of human nature. Synthesis is identified with the attempt to interpret all artificial achievements of man (arts, sciences and institutions) as the effect of these principles and of man's physical and social environment - an attempt known as theoretical history. The type of explanation envisaged by theoretical historians is based on the principle of causality. It consists in a genetic reconstruction of the social phenomenon under investigation. Inquiries into the origin of language follow this pattern of explanation. They form part of theoretical history and thus represent a major aspect of the eighteenth-century scientific study of man.     

A neurophenomenological approach to non-ordinary states of consciousness: hypnosis,meditation, and psychedelics

No contemporary unifying framework has been provided for the study of non-ordinary states of consciousness (NSCs) despite increased interest in hypnosis, meditation, and psychedelics. NSCs induce shifts in experiential contents (what appears to the experiencer) and/or structure (how it appears). This can allow the investigation of the plastic and dynamic nature of experience from a multiscale perspective that includes mind, brain, body, and context. We propose a neurophenomenological (NP) approach to the study of NSCs which highlights their role as catalysts of transformation in clinical practice by refining our understanding of the relationships between experiential (subjective) and neural dynamics. We outline the ethical implications of the NP approach for standard conceptions of health and pathology as well as the crucial role of experience-based know-how in NSC-related research and application.     

Introspective physicalism as an approach to the science of consciousness

Most 'theories of consciousness' are based on vague speculations about the properties of conscious experience. We aim to provide a more solid basis for a science of consciousness. We argue that a theory of consciousness should provide an account of the very processes that allow us to acquire and use information about our own mental states - the processes underlying introspection. This can be achieved through the construction of information-processing models that can account for 'Type-C' processes. Type-C processes can be specified experimentally by identifying paradigms in which awareness of the stimulus is necessary for an intentional action. The Shallice (1988b) framework is put forward as providing an initial account of Type-C processes, which can relate perceptual consciousness to consciously performed actions. Further, we suggest that this framework may be refined through the investigation of the functions of prefrontal cortex. The formulation of our approach requires us to consider fundamental conceptual and methodological issues associated with consciousness. The most significant of these issues concerns the scientific use of introspective evidence. We outline and justify a conservative methodological approach to the use of introspective evidence, with attention to the difficulties historically associated with its use in psychology.     

内生意图性抑制:自我控制研究的新视角

行为抑制的"停止信号"多来自内生意图行为"是否做"决策过程最后时刻内生性否定指示(即内生意图性抑制),而非环境提前设定。因无法用行为指标(错误率、反应时)评估,需将"自由选择"范式结合f MRI、EEG等技术测量与之相关的脑神经、自主神经生理特点;此外,范式中加入的刺激阈下启动、情绪信息影响了内生意图性抑制的加工过程。未来从三个方面拓展研究:(1)明确背内侧额叶皮质的心理机制;(2)探索人格特质的影响;(3)"停止信号"内生日常化。