Preoccupation with LTP as a putative memory mechanism may have retarded the consideration of pathological modulation of synaptic plasticity in clinical disorders where memory dysfunction is not a primary feature. Encouraged by Shors & Matzel's review, we consider the relationship between stress, synaptic plasticity, and depressive disorder.

From 1687, the year when Newton published his Principia, to the Crystal Palace Exhibition of 1851, science gradually became central to Western thought and economic development. The book examines how, despite powerful opposition on the Continent, a Newtonian understanding gained acceptance and practical application.

The SERVE Program at Ignatius University seeks to foster the ethical development of its participants by combining academic study of philosophy and theology with a year-long community service project. This study considered the impact of the SERVE Program upon Ignatius University students majoring in business in comparison to students pursuing majors in the liberal arts, education, and nursing. Findings from this study offer insight into the response of business students to ethical content in comparison to students pursuing degrees in other (...) disciplines. Such findings hold significant implications for business school faculty and administrators committed to the civic and ethical development of individuals pursuing careers in business and private industry. (shrink)

In this article I shall concern myself with the question ‘Is some type of justification required in order for belief in God to be rational?’ Many philosophers and theologians in the past would have responded affirmatively to this question. However, in our own day, there are those who maintain that natural theology in any form is not necessary. This is because of the rise of a different understanding of the nature of religious belief. Unlike what most people in the past (...) thought, religious belief is not in any sense arrived at or inferred on the basis of other known propositions. On the contrary, belief in God is taken to be as basic as a person's belief in the existence of himself, of the chair in which he is sitting, or the past. The old view that there must be a justification of religious belief, whether known or unknown, is held to be mistaken. One of the most outspoken advocates of this view is Alvin Plantinga. According to Plantinga the mature theist ought not to accept belief in God as a conclusion from other things he believes. Rather, he should accept it as basic, as a part of the bedrock of his noetic structure. ‘The mature theist commits himself to belief in God; this means that he accepts belief in God as basic.’. (shrink)

Animal and plant species exhibit an astonishing diversity of sexual systems, including environmental and genetic determinants of sex, with the latter including genetic material in the mitochondrial genome. In several hermaphroditic plants for example, sex is determined by an interaction between mitochondrial cytoplasmic male sterility (CMS) genes and nuclear restorer genes. Specifically, CMS involves aberrant mitochondrial genes that prevent pollen development and specific nuclear genes that restore it, leading to a mixture of female (male‐sterile) and hermaphroditic individuals in the population (...) (gynodioecy). Such a mitochondrial‐nuclear sex determination system is thought to be rare outside plants. Here, we present one possible case of CMS in animals. We hypothesize that the only exception to the strict maternal mtDNA inheritance in animals, the doubly uniparental inheritance (DUI) system in bivalves, might have originated as a mitochondrial‐nuclear sex‐determination system. We document and explore similarities that exist between DUI and CMS, and we propose various ways to test our hypothesis. (shrink)

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain (...) in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant. (shrink)

We propose a unified theory of intentions as neural processes that integrate representations of states of affairs, actions, and emotional evaluation. We show how this theory provides answers to philosophical questions about the concept of intention, psychological questions about human behavior, computational questions about the relations between belief and action, and neuroscientific questions about how the brain produces actions. Our theory of intention ties together biologically plausible mechanisms for belief, planning, and motor control. The computational feasibility of these mechanisms is (...) shown by a model that simulates psychologically important cases of intention. (shrink)

There is a bias in neuroscience toward localizing and modularizing brain functions. Single cell recording, imaging studies, and the study of neurological deficits all feed into the Gallian view that different brain areas do different things and the things being done are confined to particular processing streams. At the same time, there is a growing sentiment that brains probably don’t work like that after all; it is better to conceive of them as fundamentally distributed units, multi‐tasking at every level. This (...) sentiment, however, is much less congenial to the tried‐and‐true experimental protocols available today and to theorizing about the brain in general. This essay examines the tension between current experimental methods and large-scale views of the brain. We argue that this disconnection between experiment and what really are guiding theoretical metaphors seriously impedes progress in neuroscience. (shrink)

Many kinds of creativity result from combination of mental representations. This paper provides a computational account of how creative thinking can arise from combining neural patterns into ones that are potentially novel and useful. We defend the hypothesis that such combinations arise from mechanisms that bind together neural activity by a process of convolution, a mathematical operation that interweaves structures. We describe computer simulations that show the feasibility of using convolution to produce emergent patterns of neural activity that can support (...) cognitive and emotional processes underlying human creativity. (shrink)

There is a bias in neuroscience toward localizing and modularizing brain functions. Single cell recording, imaging studies, and the study of neurological deficits all feed into the Gallian view that different brain areas do different things and the things being done are confined to particular processing streams. At the same time, there is a growing sentiment that brains probably don’t work like that after all; it is better to conceive of them as fundamentally distributed units, multi‐tasking at every level. This (...) sentiment, however, is much less congenial to the tried‐and‐true experimental protocols available today and to theorizing about the brain in general. This essay examines the tension between current experimental methods and large-scale views of the brain. We argue that this disconnection between experiment and what really are guiding theoretical metaphors seriously impedes progress in neuroscience. (shrink)

Contemporary diagnostic criteria for anorexia nervosa explicitly refer to affective states of fear and anxiety regarding weight gain, as well as a fixed and very strong attachment to the pursuit of thinness as an overarching personal goal. Yet current treatments for that condition often have a decidedly cognitive orientation and the exact nature of the contribution of affective states and processes to anorexia nervosa remains largely uncharted theoretically. Taking our inspiration from the history of psychiatry, we argue that conceptualizing anorexia (...) nervosa as a passion is a promising way forward in both our understanding and treatment of that condition. Building on the theory of the passions elaborated by Théodule Ribot, the founder of scientific psychology in France, we argue that there is convincing empirical evidence in defense of the empirical hypothesis that anorexia nervosa is a passion in Ribot’s specific, technical sense. We then explore the implications of this finding for current approaches to treatment, including cognitive–behavioral therapy, and clinical and ethical issues associated with treatment refusals. (shrink)

This article engages in debates about the potential for aesthetics to be a positive, ethical, and moral frame for relating to the environment. Human‐environment relations are increasingly tied up with aesthetics. We problematize this trend by contending that aesthetics is an insufficient paradigm to motivate and shape environmentalism because it exceptionalizes some landscapes while devaluing others. This article uses four illustrative case studies to complicate aesthetic environmentalist frames. These case studies indicate that even when positive aesthetic qualities are deployed in (...) environmentalist advocacy, their usefulness is mitigated by a range of factors including: sensationalization, obfuscation, and further degradation. (shrink)

The current work builds a definition of irritability from both academic definitions and lay perspectives. In Study 1, a quantitative content analysis of academic definitions resulted in eight main content categories. In Study 2, a community sample of 39 adults participated in qualitative interviews. A deductive thematic analysis resulted in two main themes. The first main theme dealt with how participants positioned irritability in relation to other negative states. The second dealt with how participants constructed irritability as both a loss (...) of control and as an experience that should be controlled. The discussion integrates the findings of both studies and provides a concise, but comprehensive definition. (shrink)

Gratitude has been promoted as a beneficial emotional experience. However, gratitude is not universally experienced as positive. The current work examines whether an autonomous interpersonal style is associated with differential experience of gratitude. Study 1 found an inverse relationship between trait autonomy and both trait gratitude and positivity of response to receiving a hypothetical benefit from a friend. Study 2 replicated the finding that those higher in autonomy report less trait gratitude, and also demonstrated an inverse relationship between autonomy and (...) valuing gratitude. Study 3 found that those higher in autonomy had more self-image goals and reduced compassionate goals in relationships, and that valuing gratitude mediated the relationship between autonomy and relationship goals. These results show a consistent inverse relationship between autonomy and the experience and valuing of gratitude, suggesting that degree of autonomy is one determinant of whether gratitude is experienced as positive. (shrink)