A perfectly matched layer (PML) absorbing material composed of a uniaxial anisotropic material is presented for the truncation of finite-difference time-domain (FDTD) lattices. It is shown that the uniaxial PML material formulation is mathematically equivalent to the perfectly matched layer method published by Berenger (see J. Computat. Phys., Oct. 1994). However, unlike Berenger's technique, the uniaxial PML absorbing medium presented in this paper is based on a Maxwellian formulation. Numerical examples demonstrate that the FDTD implementation of the uniaxial PML medium (...) is stable, equal in effectiveness as compared to Berenger's PML medium, while being more computationally efficient. (shrink)

Written by one of today's most creative and innovative philosophers, Ruth Garrett Millikan, this book examines basic empirical concepts; how they are acquired, how they function, and how they have been misrepresented in the traditional philosophical literature. Millikan places cognitive psychology in an evolutionary context where human cognition is assumed to be an outgrowth of primitive forms of mentality, and assumed to have 'functions' in the biological sense. Of particular interest are her discussions of the nature of abilities as different (...) from dispositions, her detailed analysis of the psychological act of reidentifying substances, and her critique of the language of thought for mental representation. In a radical departure from current philosophical and psychological theories of concepts, this book provides the first in-depth discussion on the psychological act of reidentification. (shrink)

Talk of the unconscious in the philosophy of emotions concerns twothings. It can refer to an emotion whose existence is not in any way presentto consciousness. Or, it can refer to emotional phenomena whose meaning lies in the unconscious. My interest here is in the former issue of whether emotional states can exceed the reach of conscious awareness. I start with a presentation of psychoanalytic views that inform contemporary work toward a cognitivist analysis of emotion. The discussion of cognitivism leads (...) to a consideration of work in experimental psychology that appears to establish the reality of emotional phenomena that transcend conscious awareness. However, I argue that a careful consideration of the relevant evidence falls short of supporting the claim that there are unconscious emotions. (shrink)

In "Upheavals of Thought", Martha Nussbaum offers a theory of the emotions. She argues that emotions are best conceived as thoughts, and she argues that emotion-thoughts can make valuable contributions to the moral life. She develops extensive accounts of compassion and erotic love as thoughts that are of great moral import. This paper seeks to elucidate what it means, for Nussbaum, to say that emotions are forms of thought. It raises critical questions about her conception of the structure of emotion, (...) and about her conception of compassion, in particular. Finally, the paper seeks to show how analyzing the structure, as well as the moral value, of the emotions ultimately requires entering the realm of religious ethics. (shrink)

How do rational minds make contact with the world? The empiricist tradition sees a gap between mind and world, and takes sensory experience, fallible as it is, to provide our only bridge across that gap. In its crudest form, for example, the traditional idea is that our minds consult an inner realm of sensory experience, which provides us with evidence about the nature of external reality. Notoriously, however, it turns out to be far from clear that there is any viable (...) conception of experience which allows it to do the job. The original problem is to show that thought is rationally constrained by external reality. If sensory experience is to provide the solution--in particular, if it is to provide the answer to sceptical challenges--it must therefore meet two criteria. First, it must itself be `receptive'--i.e., appropriately constrained by external reality. Second, it must be the kind of thing that can enter into a logical or rational relationship with belief--it must already be `conceptual,' in other words. In arguing against the idea that anything could serve both roles, Wilfred Sellars termed this conception of experience "the Myth of the Given.". (shrink)

In Mind and World, John McDowell argues against the view that perceptual representation is non-conceptual. The central worry is that this view cannot offer any reasonable account of how perception bears rationally upon belief. I argue that this worry, though sensible, can be met, if we are clear that perceptual representation is, though non-conceptual, still in some sense 'assertoric': Perception, like belief, represents things as being thus and so.

within-field task as testing proceeded. (In any case, the two-field task is presumably a more difficult one than the one-field task. ...

Linking the process of rational decision making to emotions, an award-winning scientist who has done extensive research with brain-damaged patients notes the dependence of thought processes on feelings and the body's survival-oriented regulators. 50,000 first printing.

In this urbane and witty book, Ronald de Sousa disputes the widespread notion that reason and emotion are natural antagonists.

The publication of this book is an event in the making. All over the world scientists, psychologists, and philosophers are waiting to read Antonio Damasio's new theory of the nature of consciousness and the construction of the self. A renowned and revered scientist and clinician, Damasio has spent decades following amnesiacs down hospital corridors, waiting for comatose patients to awaken, and devising ingenious research using PET scans to piece together the great puzzle of consciousness. In his bestselling Descartes' Error, Damasio (...) revealed the critical importance of emotion in the making of reason. Building on this foundation, he now shows how consciousness is created. Consciousness is the feeling of what happens-our mind noticing the body's reaction to the world and responding to that experience. Without our bodies there can be no consciousness, which is at heart a mechanism for survival that engages body, emotion, and mind in the glorious spiral of human life. A hymn to the possibilities of human existence, a magnificent work of ingenious science, a gorgeously written book, The Feeling of What Happens is already being hailed as a classic. (shrink)

Much as we would like to conceive empirical thought as rationally grounded in experience, pitfalls await anyone who tries to articulate this position, and ...

A list of groceries, Professor Anscombe once suggested, might be used as a shopping list, telling what to buy, or it might be used as an inventory list, telling what has been bought (Anscombe 1957). If used as a shopping list, the world is supposed to conform to the representation: if the list does not match what is in the grocery bag, it is what is in the bag that is at fault. But if used as an inventory list, the (...) representation is supposed to conform to the world: if the list does not match what is in the bag, it is the list that is at fault. The first kind of representation, where the world is supposed to conform to the list, can be called "directive"; it represents or directs what is to be done. The second, where the list is supposed to conform to the world, can be called "descriptive"; it represents or describes what is the case. I wish to propose that there exist representations that face both these ways at once. With apologies to Dr. Doolittle, I call them pushmi-pullyu representations or PPRs. (shrink)

How the various things that are said to have meaning—purpose, natural signs, linguistic signs, perceptions, and thoughts—are related to one another.

How should we understand the emotional rationality? This first part will explore two models of cognition and analogy strategies, test their intuition about the emotional desire. I distinguish between subjective and objective desire, then presents with a feeling from the "paradigm of drama" export semantics, here our emotional repertoire is acquired all the learned, and our emotions in the form of an object is fixed. It is pretty well in line with the general principles of rationality, especially the lowest reasonable (...) principles. Turned to the second part of this side of reasonable. I will inquire how emotional beliefs, desires, and behaviors contribute to the rationality. I will present a very general biological hypothesis: emotions by controlling highlights the characteristics of perception and reasoning, so that we remove the difficulties due in particular to lead to paralysis; they are being simulated by a simplified perception of information, thus limiting our practice and cognitive choice. How are we to understand emotional or axiological rationality? I pursue analogies with both the cognitive and the strategic models, testing them against intuitions about emotional desires. We distinguish two different classes of desires, the subjective and the objective, and propose that emotions have a semantics that derives from "paradigmatic scenarios", in terms of which our emotional repertoire is learned and the formal objects of our emotions fixed. This fits in well with emerging facts about how our emotional capacities develop, and it can also be squared with the general principles of rationality, particularly minimal rationality. In the second part, I return to the perspective of rationality. I ask how emotions contribute to the rationality of beliefs, desires, and behavior. I proffer a very general biological hypothesis: Emotions spare us the paralysis potentially induced by a particular predicament by controlling the salience of features of perception and reasoning; they temporarily mimic the informational encapsulation of perception and so circumscribe our practical and cognitive options. (shrink)

Philosophers widely agree that emotions may have or lack appropriateness or fittingness, which in the emotional domain is an analogue of truth. I defend de Sousa's account of emotional truth by arguing that emotions have cognitive content as digitalized evaluative perceptions of the particular object of emotion, in terms of the relevant formal property. I argue that an emotion is true if and only if there is an actual fit between the particular and the formal objects of emotion, and the (...) emotion's propositional content is semantically satisfied, or the target of the emotion exists. Emotions meet the syntactic and disciplinary requirements of minimally truth-apt states. Appropriate fit occurs when lower-level properties of particular objects of emotion provide sufficient warrant to make ascription of the relevant formal properties superassertable. (shrink)

I argue that emotions are belief/desire sets characterized by strong desire.

Gut Reactions is an interdisciplinary defense of the claim that emotions are perceptions of changes in the body.

Peter Goldie opens the path to a deeper understanding of our emotional lives through a lucid philosophical exploration of this surprisingly neglected topic. Drawing on philosophy, literature and science, Goldie considers the roles of culture and evolution in the development of our emotional capabilities. He examines the links between emotion, mood, and character, and places the emotions in the context of consciousness, thought, feeling, and imagination. He explains how it is that we are able to make sense of our own (...) and other people's emotions, and how we can explain the very human things which emotions lead us to do. He argues that it is only from the personal point of view that thoughts, reasons, feelings, and actions come into view. This fascinating book gives an accessible but penetrating exploration of an important but mysterious subject. Any reader interested in emotion and its role in understanding our lives will find much to think about here. (shrink)

A number of authors have argued recently that the content of perceptual experience can, and even must, be characterized in conceptual terms. Their claim, more precisely, is that every perceptual experience is such that, of necessity, its content is constituted entirely by concepts possessed by the subject having the experience. This is a surprising result. For it seems reasonable to think that a subject’s experiences could be richer and more fine-grained than his conceptual repertoire; that a subject might be able, (...) for example, to discriminate in experience more shades of colors than he has color concepts. The key move in their argument, therefore, is to articulate the conceptual content of experience using demonstrative, instead of general, concepts. For instance, these authors argue that the content of my perceptual experience of a particular shade of green is properly characterized in terms of the concept expressed by the linguistic utterance “that shade”. Even if I don’t possess a general concept for the shade I’m seeing—a concept of the kind typically expressed using color names like ‘chartreuse’ or ‘lime’—nevertheless, these authors argue, the content of the experience can still be characterized conceptually using a demonstrative concept that I do possess. (shrink)

Life, on a day to day basis, is a sequence of emotional states: hope, disappointment, irritation, anger, affection, envy, pride, embarrassment, joy, sadness and many more. We know intuitively that these states express deep things about our character and our view of the world. But what are emotions and why are they so important to us? In one of the most extensive investigations of the emotions ever published, Robert Roberts develops a novel conception of what emotions are and then applies (...) it to a large range of types of emotion and related phenomena. In so doing he lays the foundations for a deeper understanding of our evaluative judgments, our actions, our personal relationships and our fundamental well-being. Aimed principally at philosophers and psychologists, this book will certainly be accessible to readers in other disciplines such as religion and anthropology. (shrink)

DeLancey shows that our understanding of emotion provides essential insight on key issues in philosophy of mind and artificial intelligence. He offers us a bold new approach to the study of the mind based on the latest scientific research and provides an accessible overview of the science of emotion.

INTRODUCTION: REASON AND THE PASSIONS i. Philosophy? This same philosophy is a good horse in the stable, but an arrant jade on a journey. ...

William James's theory of emotion is often criticized for placing too much emphasis on bodily feelings and neglecting the cognitive aspects of emotion. This paper suggests that such criticisms are misplaced. Interpreting James's account of emotion in the light of his later philosophical writings, I argue that James does not emphasize bodily feelings at the expense of cognition. Rather, his view is that bodily feelings are part of the structure of intentionality. In reconceptualizing the relationship between cognition and affect, James (...) rejects a number of commonplace assumptions concerning the nature of our cognitive relationship with the world, assumptions that many of his critics take for granted. (shrink)

I take it for granted that sense experiential states provide reasons for empirical beliefs; indeed this claim forms the first premise of my central argument for (CC). 1 The subsequent stages of the argument are intended to establish that a person has such a reason for believing something about the way things are in the world around him only if he is in some mental state or other with a conceptual content: a conceptual state. Thus, given that sense experiential states (...) do provide reasons for empirical beliefs, they must have conceptual content. (shrink)