Eye movements during mental imagery are not epiphenomenal but assist the process of image generation. Commands to the eyes for each fixation are stored along with the visual representation and are used as spatial index in a motor‐based coordinate system for the proper arrangement of parts of an image. In two experiments, subjects viewed an irregular checkerboard or color pictures of fish and were subsequently asked to form mental images of these stimuli while keeping their eyes open. During the perceptual (...) phase, a group of subjects was requested to maintain fixation onto the screen's center, whereas another group was free to inspect the stimuli. During the imagery phase, all of these subjects were free to move their eyes. A third group of subjects (in Experiment 2) was free to explore the pattern but was requested to maintain central fixation during imagery. For subjects free to explore the pattern, the percentage of time spent fixating a specific location during perception was highly correlated with the time spent on the same (empty) locations during imagery. The order of scanning of these locations during imagery was correlated to the original order during perception. The strength of relatedness of these scanpaths and the vividness of each image predicted performance accuracy. Subjects who fixed their gaze centrally during perception did the same spontaneously during imagery. Subjects free to explore during perception, but maintaining central fixation during imagery, showed decreased ability to recall the pattern. We conclude that the eye scanpaths during visual imagery reenact those of perception of the same visual scene and that they play a functional role. (shrink)

In his 1841-2 Berlin lectures, Schelling critiques German idealism’s negative method of regressing from existence to its first principle, which is supposed to be intelligible without remainder. He sees existence as precisely its remainder since there could be nothing that exists. To solve this, Schelling enlists the positive method of progressing from the fact of existence to a proof of this principle’s reality. Since this proof faces the absurdity that there is anything rather than nothing, he concludes that this fact’s (...) constitution and this principle’s proof are mutually dependent, non-dischargeable tasks. I trace this reciprocal relation to one Kant establishes between the constitutive categories of experience and the experience that proves their applicability and argue that it adheres to Kant’s threefold criterion of proof. I do so by uncovering the Maimonian skeptical motivation—specifically, the need to answer what I call the question quid indicii—behind the qualified return to Kant on which Schelling’s critique of idealism relies. (shrink)

When formulating the concept of the impulse-image, Deleuze never tires of asserting that these images are saturated with death and obsessed by degradation. They stand at a curious intersection in the taxonomy of images, a constitutively in-between space: they are formally inserted between affection-image and action-image in The Movement-Image, but produce a direct passage to the time-image. However, they do not reach the time-image due to obsession by the negative effects of time. This article introduces the concept of the impulse-image (...) in Deleuze's work on the impulse and death instinct, in his fundamental texts of the 1960s and 1970s, including his collaboration with Félix Guattari. The death instinct in the late 1960s was a transcendental principle that acquired the form of the groundless or crack-up essential for the production of difference. It is at this time that Deleuze publishes Zola and the Crack-up, an embryonic essay for what would later become the impulse-image. In the 1970s, Deleuze, along with Guattari, fought the need to include a groundless force in the mould of the death instinct. Speaking of cinema in the 1980s, which is when he returns to the impulse theme, one finds characteristics of both preceding periods, especially the structure conceived in the 1960s, associated with the criticism of the 1970s. However, Deleuze now stands apart, recognising a naturalistic image and admiring a practice of symptomatology, but pointing out that his own understanding of the world does not lie in it. With the impulse-images, Deleuze also plays a relevant role in studies of film naturalism, shaping a powerful concept for studies of contemporary naturalistic symptomatologies that emerge in situations of misery of civilisation. (shrink)

Bernard Mandeville's poem "The Grumbling Hive: or, Knaves turn'd Honest" explores the subtle interplay between morality and business practices, particularly through the lens of the term "knave". This article examines Mandeville's use of "knave" in juxtaposition with the value of honesty portrayed in the poem's title. In contrast to the spiritual transformation depicted in the poem, in which all the bees in the hive become honest through divine intervention, Mandeville suggests a different kind of change in moral practice, one that (...) incorporates previously unacceptable behavior into the social fabric. Through a varied historical reconstruction of the uses and understandings of the term in question, the study explores Mandeville's concerns about the acceptance and normalization of dishonesty in various segments of society, as illustrated by the anecdote in Observation B, which shows how dishonesty permeates all aspects of commerce, involving buyers, sellers, merchants, traders, and dealers. By analyzing Mandeville's portrayal of dishonesty and its integration into social dynamics, this study aims to elucidate the underlying tensions between ethical standards and the pursuit of self-interest. (shrink)

The economic crisis happening across the world over the last few years describes a range of interdependencies and interactions,and has highlighted the fundamentalf laws of neoclassical economic theory: its unedifying focus on prediction and, above all, its inability to explain how the economy really works. As such, it is increasingly recognised that economic phenomena cannot be exclusively investigated as being derived from deterministic, predictable and mechanistic dynamics. Instead, a new approach is required by which history-dependence, organic and ever-evolving processes are (...) also accounted for. As this view implies new challenges and opportunities for policy, we will focus our attention on innovative components of Complexity Theory for the study of economics and the evaluation of public policies. (shrink)

SummaryMutations in human genes encoding transcription factors are often dominant because one active allele cannot ensure a normal phenotype (haploinsufficiency). In other instances, heterozygous mutations of two genes are required for a phenotype to appear (combined haploinsufficiency). Here, we explore with models (i) the basis of haploinsufficiency and combined haploinsufficiency owing to mutations in transcription activators, and (ii) how the effects of such mutations can be amplified or buffered by subsequent steps in a transcription cascade. We propose that the non‐linear (...) (sigmoidal) response of transcription to the concentration of activators can explain haploinsufficiency. We further show that the sigmoidal character of the output of a cascade increases with the number of steps involved, the settings of which will determine the buffering or enhancement of the effects of a decreased concentration of an upstream activator. This exploration provides insights into the bases of compensatory mutations and on interloci interactions underlying oligogenic inheritance patterns. (shrink)

Dès 1983, à l’occasion du colloque Une histoire des femmes est-elle possible? qui allait marquer le véritable départ de l’histoire des femmes en France, Alain Corbin soulignait la nécessité de se pencher aussi sur les « mentalités masculines », afin que puisse émerger une « histoire sexuée qui couple ses analyses ». L’auteur des Filles de noce resta longtemps peu entendu. Cette dernière décennie a pourtant vu une nette évolution s’amorcer, les masculinités françaises devenant peu à peu un ch...

The problem of unconceived alternatives (or the New Induction) states that, since scientists have recurrently failed to conceive relevant theoretical alternatives for some domains of science, current scientists are probably also failing to do so. Therefore, there may be theories which still exceed the grasp of scientists’ imagination, and one should not endorse a realist stance towards current science. In this paper, I raise a conceptual worry for the formulation of this problem: what does it mean to say that scientists (...) failed to conceive a relevant theory? What aggravates the problem is that no simple notion of relevance makes the New Induction as strong as it initially seems. I consider the three more obvious interpretations of relevance: relevance as objective probability; relevance as epistemic probability assessed by current scientists; and relevance as epistemic probability assessed by past scientists. I argue that assuming any of these three notions implies difficulties for the New Induction, hence their proponents shouldn’t take the notion of relevance for granted. A more precise definition of relevance is essential to understand what are the difficulties surrounding the problem of unconceived alternatives as an epistemic worry. Until now, such notion is missing. KeyWords: Scientific realism, unconceived alternatives, Kyle Stanford, New Induction, Pessimistic Induction. (shrink)

In 1876 the Italian physicist and physical chemist Adolfo Bartoli discussed a thought experiment in which he connected the second law of thermodynamics with the hypothetical pressure of radiation. Bartoli's work, published in Italian, exerted some influence on the subsequent development of black-body theory and light pressure research. This influence was mainly due to Boltzmann, who came to the Stefan-Boltzmann radiation law via a reworking of Bartoli's thought experiment. However, contrary to what is usually assumed, Bartoli was himself reluctant to (...) admit the existence of light pressure and soon rejected the hypothesis. Bartoli's work is discussed and related to other work in the areas of radiometer research and thermodynamics. (shrink)

Bringing together a range of specialists in their respective fields, the book provides a combination of original research with fundamental questions about why states stay together, and above all why sometimes they fall apart. When and under what conditions is the separation of one part of a state from another justified? Written in an accessible and informed manner, the authors seek to answer this question on the basis of ten case studies and a general review of the literature and theories (...) of the question. (shrink)

A la fin du XVIIIe siècle, Emmanuel Kant pouvait encore voir dans les mathématiques le modèle même des jugements synthétiques a priori, c'est-à-dire dotés d'un contenu intuitif propre quoique non dérivé de l'expérience sensible. Des géométries non-euclidiennes à la théorie des transfinis de Cantor, les mathématiques du XIXe siècle vont cependant faire triompher des systèmes mathématiques résolument déductifs et non plus intuitifs. Sur fond d'interrogations quant à la légitimité de ces développements récents, interrogations renforcées par la découverte de paradoxes, d'âpres (...) débats vont alors opposer différentes écoles quant aux méthodes de preuve acceptables ainsi que quant à ce qui constitue le fondement même du savoir mathématique. Logicisme, formalisme et intuitionnisme ; ce sont, à l'époque, pas moins de trois conceptions des mathématiques (et trois programmes pour les mathématiques) qui s'affrontent, conceptions auxquelles il faut ajouter le psychologisme, qui se nourrit de l'essor des sciences humaines et de leurs prétentions épistémologiques. En collant au plus près des textes des principaux protagonistes, l'ouvrage présente de manière tout à la fois synthétique et précise les différentes positions en présence, en soulignant autant que possible leurs divergences, mais en montrant aussi les variations et inflexions qui ont marqué leur développement durant la période 1870-1930. (shrink)

L’intérêt durable porté par Edmund Husserl aux travaux de William James en dépit de la divergence de leurs projets philosophiques s’explique sans doute par deux traits saillants de la psychologie de James qui l’inscrivent dans le prolongement de celle de Franz Brentano et lui confèrent même une certaine supériorité par rapport à cette dernière. Ces deux traits sont d’une part la capacité de James à articuler de manière particulièrement convaincante les analyses de psychologie descriptive aux explications en termes neurophysiologiques et (...) d’autre part sa capacité à penser le caractère dynamique du flux de conscience et la genèse en lui de la structure intentionnelle. Bien plus, loin de la condamner au psychologisme, ces deux traits de la pensée de James s’inscrivent sur fond d’une critique très sévère de la « psychologist’s fallacy » commise notamment dans l’école associationniste, critique qui marqua profondément Husserl.The long lasting interest which Edmund Husserl has taken in William James’ work in spite of their very different philosophical projects can be explained by two significant features which place James’ psychology in the continuation of Franz Brentano’s and even confer it some superiority compared to the latter. These features are on the one hand James’s ability to combine analyses of descriptive psychology with explanations of neurophysiology and on the other hand James’ ability to study the dynamic nature of the stream of consciousness as well as the intentional structure arising from this stream. Furthermore, far from condemning him to psychologism, both these features of James’ thought take their roots in a very strong criticism of the « psychologist’s fallacy » made in the associationist school, criticism which impressed Husserl deeply. (shrink)