The question of whether time is its own best representation is explored. Though there is theoretical debate between proponents of internal models and embedded cognition proponents (e.g. Brooks R 1991 Artificial Intelligence 47 139–59) concerning whether the world is its own best model, proponents of internal models are often content to let time be its own best representation. This happens via the time update of the model that simply allows the model’s state to evolve along with the state of the (...) modeled domain. I argue that this is neither necessary nor advisable. I show that this is not necessary by describing how internal modeling approaches can be generalized to schemes that explicitly represent time by maintaining trajectory estimates rather than state estimates. Though there are a variety of ways this could be done, I illustrate the proposal with a scheme that combines filtering, smoothing and prediction to maintain an estimate of the modeled domain’s trajectory over time. I show that letting time be its own representation is not advisable by showing how trajectory estimation schemes can provide accounts of temporal illusions, such as apparent motion, that pose serious difficulties for any scheme that lets time be its own representation. (shrink)

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First published in 2000. Routledge is an imprint of Taylor & Francis, an informa company.

This first volume contains discussions of the brain, methods for analyzing behavior, thought, consciousness, attention, association, time, and memory.

THIS paper seeks to elucidate the phenomenon known in psychology as 'the specious present,' by postulating a two-dimensional theory of the extensional aspects of time. On this theory, the usual logical and psychological difficulties, encountered in current accounts of this phenomenon, can be resolved. For, when there are two dimensions of time, the same event may be without extension in one of these dimensions ('transition-time'), while it is nevertheless finitely extended in the other of these dimensions ('phase-time'); so that in (...) a definable sense the phases of a finitely enduring event, though successive in one time-order, yet are contemporary in the other. The epistemological standpoint implicit in the paper is generally similar to the one Bertrand Russell has put forward, in his Physics and Experience (Cambridge, 1946), and his Human Knowledge: Its Scope and Limits (London, 1948) (allowing for the changes which would be required in Russell's theory to take into account a second time dimension). A 'psycho-neural parallelism,' or one-one correspondence, is postulated between features of certain 'experiential events' (namely, those experiential events normally held to be happening to some person's mind, which are describable in the language of psychology); and features of certain 'physical events' (namely, those events described in the language of physics, chemistry and physiology, which are ordinarily conceived as happenings in that same person's body). These physical events are conceived of as being causally connected with events in the physical world outside the experient's body, by means of the concepts of light waves, sound waves, chemical stimuli, and consequential processes in the nervous system (central and peripheral) and sense-organs, in the usual way. In terms of this psycho-neural parallelism the physical correlate of the finite temporal span of the specious, or experiential present, is to be found in certain consequences of the uncertainty principle in quantum physics; according to which there is a finite interval of time necessarily associated with a nearly precise determination of energy levels, and of transitions between them. Some of the physical implications of this theory, applied to processes in the material structure of the human body, are discussed qualitatively. But, for the reasons given in the last section of the paper, a quantitative treatment is not yet possible. The paper is greatly indebted in regard to the physical application of the two-dimensional theory of time, to the discussion of the pentadic group structure in Eddington's Fundamental Theory (Cambridge, 1946 and 1950); and in particular to the treatment there of the phase-variable as the 'time-analogue' in the quantum statistics of stationary states. (shrink)

William James’ Principles of Psychology, in which he made famous the ‘specious present’ doctrine of temporal experience, and Edmund Husserl’s Zur Phänomenologie des inneren Zeitbewusstseins, were giant strides in the philosophical investigation of the temporality of experience. However, an important set of precursors to these works has not been adequately investigated. In this article, we undertake this investigation. Beginning with Reid’s essay ‘Memory’ in Essays on the Intellectual Powers of Man, we trace out a line of development of ideas about (...) the temporality of experience that runs through Dugald Stewart, Thomas Brown, William Hamilton, and finally the work of Shadworth Hodgson and Robert Kelly, both of whom were immediate influences on James (though James pseudonymously cites the latter as ‘E.R. Clay’). Furthermore, we argue that Hodgson, especially his Metaphysic of Experience (1898), was a significant influence on Husserl. (shrink)

In his recent book The Stream of Consciousness, Dainton provides what must surely count as one of the most comprehensive discussions of time-consciousness in analytical philosophy. In the course of doing so, he also challenges Husserl's classical account in a number of ways. In the following contribution, I will compare Dainton's and Husserl's respective accounts. Such a comparison will not only make it evident why an analysis of time-consciousness is so important, but will also provide a neat opportunity to appraise (...) the contemporary relevance of Husserl's analysis. How does it measure up against one of the more recent analytical accounts? (shrink)

Consciousness exists in time, but time is also to be found within consciousness: we are directly aware of both persistence and change, at least over short intervals. On reflection this can seem baffling. How is it possible for us to be immediately aware of phenomena which are not (strictly speaking) present? What must consciousness be like for this to be possible? In "Stream of Consciousness" I argued that influential accounts of phenomenal temporality along the lines developed by Broad and Husserl (...) were fundamentally flawed, and proposed a quite different account: the overlap model. While recognizing that the latter has merits, Gallagher argues that it too is fundamentally flawed; he also takes issue with some of my claims concerning Broad and Husserl. My reply comes in three main parts. I start by clarifying my use of certain terms, in particular realism and anti-realism as applied to theories of phenomenal temporality in general, and the accounts of Broad and Husserl in particular. I then turn to Gallagher’s main criticisms of the overlap theory. Gallagher argues that the theory is sunk by a problem with ongoing contents, that if our experience possessed the structures I ascribe to it, we would be aware of contents as having longer durations than is actually the case. I suggest otherwise: the version of the overlap theory which is afflicted by this difficulty is not the version I put forward, as becomes clear when two distinct forms of overlap are distinguished. Gallagher is also concerned that the theory lacks phenomenological grounding, and has difficulties with experiential holism. The latter worry, I argue, is completely misplaced. While the former has more warrant, it too is rooted in a misconception: the overlap theory was intended only to provide an account of the most basic sensory components of our short-term experience of temporality, and can easily be expanded to accommodate other aspects. I supply a sketch an augmented theory to back up this claim. I conclude with an assessment of the intentional account of time-consciousness Gallagher ascribes to Husserl. A meaning-based account of this kind is incapable of accounting for experienced sensory continuity, or so I argue. I also suggest that both Broad and Husserl may have had leanings towards the Simple Conception of consciousness. -/- . (shrink)

By examining Dainton's account of the temporality of consciousness in the context of long-running debates about the specious present and time consciousness in both the Jamesian and the phenomenological traditions, I raise critical objections to his overlap model. Dainton's interpretations of Broad and Husserl are both insightful and problematic. In addition, there are unresolved problems in Dainton's own analysis of conscious experience. These problems involve ongoing content, lingering content, and a lack of phenomenological clarity concerning the central concept of overlapping (...) experiences. (shrink)

An innovative theory of consciousness, drawing on the phenomenology of Edmund Husserl and supported by brain-imaging, presented in the form of a hardboiled ..

This book clarifies Husserl's notion of perceptual experience as "immediate" or "direct" with respect to its purported object, and outlines his theory of evidence. In particular, it focuses on Husserl's account of our perceptual experience of time, an aspect of perception rarely noted in', recent philosophical literature, yet which must be taken into consideration if an adequate account of perception is to be provided. Perhaps equally important, there is a new wave of work in phenomenology (and intentionality), reflecting a synthesis (...) of phenomenological and analytic philosophy, Miller's book is an important contribution to that "new wave," and has a significant bearing on contemporary issues in cognitive science. (shrink)

In this 1999 book Pierre Keller examines the distinctive contributions, and the respective limitations, of Husserl's and Heidegger's approach to fundamental elements of human experience. He shows how their accounts of time, meaning, and personal identity are embedded in important alternative conceptions of how experience may be significant for us, and discusses both how these conceptions are related to each other and how they fit into a wider philosophical context. His sophisticated and accessible account of the phenomenological philosophy of Husserl (...) and the existential phenomenology of Heidegger will be of wide interest to students and specialists in these areas, while analytic philosophers of mind will be interested by the detailed parallels which he draws with a number of concerns of the analytic philosophical tradition. (shrink)

The doctrine of the specious present holds that sensation at an instant encompasses objects as they are over an interval. Now there actually is intersubjective agreement with respect to past, present, and future determinations, and it is a necessary condition for legitimately postulating them as objective. I argue that the specious present doctrine would make this actuality an impossibility, and that the data on which the doctrine is based do not in fact support it.

Franz Brentano is recognised as one of the most important philosophers of the late nineteenth and early twentieth centuries. This work, first published in English in 1988, besides being an important contribution to metaphysics in its own right, has considerable historical importance through its influence on Husserl’s views on internal time consciousness. The work is preceded by a long introduction by Stephan Körner in collaboration with Brentano’s literary executor Roderick Chisholm. It is translated by Barry Smith.