As James Madison would not hesitate to tell us, the scale of a polity or jurisdiction is one of the most basic factors organizing political life. By scale, I refer to the number of inhabitants (or, alternately, constituents or voters) in a political unit, although geographic size may also shape political behavior. Large jurisdictional scale implies that candidates for office must campaign in la...

Stream of Consciousness is a detailed and insightful analysis of the nature of phenomenal consciousness, especially its unity at a time and continuity over stretches of time. I find Dainton's approach to phenomenal consciousness in many ways sound but I also point out one major source of disgreement between us. Dainton believes that to explain phenomenal unity and continuity, no reference to an...

The nature and mechanism of human consciousness is emerging as one of the most important scientific and philosophical questions of the 21st century. Disregarded as a subject of serious inquiry throughout most of the 20th century, it has now regained legitimacy as a scientific endeavor. The investigation of consciousness and the mechanisms of general anesthesia have begun to converge. In the pre...

Synthesizing concepts and findings from a number of recent models of human consciousness, a unified model of the key properties characterizing human consciousness is outlined. Six key properties are emphasized: Dynamical representation of the focus of consciousness, Focusing of energetic resources and focusing of informational resources on a subset of system knowledge, Global Workspace dynamics...

INTRODUCTION All mammals show the physiological correlates of waking, dreaming and deep sleep. Many contemplative traditions propose a fourth state of consciousness, “silent consciousness,” defined as consciousness without reportable contents. For example, the Mandukya Upanishad, one of the root texts of Vedanta philosophy, explicitly claims a fourth state of “consciousness without content.” (S...

Block's well-known distinction between phenomenal consciousness and access consciousness has generated a large philosophical literature about putative conceptual connections between the two. The scientific literature about whether they come apart in any actual cases is rather smaller. Empirical evidence gathered to date has not settled the issue. Some put this down to a fundamental methodologic...

We review theories and empirical research on underlying mechanisms of selfhood, awareness, and conscious experience. The mechanisms that have been identified for these phenomena are many and multifarious, lying at many levels of space and time, and complexity and abstractness. Proposals have included the global workspace for conscious information, action and its centrality to self awareness, th...

Consciousness, as a complex phenomenon, arises on a hierarchy of human rhythms and their interaction with environment. We present here a model of consciousness represented as a parallel distributed multiprocessing system with rhythmic scanning within a set of active modules. Dominant "gestalt" activity is then created by global exchange of information on "system bus" and by means of common elec...