A hypothesis about sensorimotor integration (the λ model) is described and applied to movement control and kinesthesia. The central idea is that the nervous system organizes positional frames of reference for the sensorimotor apparatus and produces active movements by shifting the frames in terms of spatial coordinates. Kinematic and electromyographic patterns are not programmed, but emerge from the dynamic interaction among the system s components, including external forces within the designated frame of reference. Motoneuronal threshold properties and proprioceptive inputs to (...) motoneurons may be cardinal components of the physiological mechanism that produces positional frames of reference. The hypothesis that intentional movements are produced by shifting the frame of reference is extended to multi-muscle and multi-degrees-of-freedom systems with a solution of the redundancy problem that allows the control of a joint alone or in combination with other joints to produce any desired limb configuration and movement trajectory. The model also implies that for each motor behavior, the nervous system uses a strategy that minimizes the number of changeable control variables and keeps the parameters of these changes invariant. Examples are provided of simulated kinematic and electromyographic signals from single- and multi-joint arm movements produced by suggested patterns of control variables. Empirical support is provided and additional tests of the model are suggested. The model is contrasted with others based on the ideas of programming of motoneuronal activity, muscle forces, stiffness, or movement kinematics. (shrink)

The basic concepts of motor control formulated in our target article were derived from specific experiments, a fact which is disregarded in Dalenoort's comments. A purely academic approach to motor control may not result in a clearer understanding of control concepts.

The information required for perception may be available in the energy arrays that stimulate sensory organs but in a form not directly suitable for the planning and execution of the organism's actions in the environment. The requisite form of information is obtained, with no loss of adequate perception, by representation of sensory stimuli in frames of reference determined by internal control signals producing actions. This process seems evolutionarily advantageous but makes perception essentially non-direct, regardless of the degree of intra- or (...) inter-modal sensory integration. (shrink)

The presented article is an attempt to describe in a synthetic way an own vision of a German front-line soldier of the First World War. It also tries to show an image of some enemies – the French, the British and the Russians. The attempt was made on the basis of recollection material and literary forms created either during or soon after the war. The conclusion is unequivocal – the more contact the authors of the texts had with the opponent, (...) the more balanced image of the enemy they presented in their texts and the less were they prone to overestimate the German soldier. Yet the press material contained a lot of exaggeration. The authors created a haughty and sometimes even superhuman image of the German soldier. At the same time the image of the enemy was inhuman and deserving contempt. (shrink)

The seeming absence of negative evidence in the input that children receive during language acquisition has long been regarded as a serious problem for non-nativist linguistic theories. Among the solutions that have been suggested for this problem, preemption by competing structures is doubtless the most intensively researched and widely accepted. However, while preemption works well in the domain of morphology, it cannot apply categorically in the domain of syntax, as this would preclude the existence of semantically overlapping constructions, such as (...) the ditransitive and the prepositional dative, which can be used alternatively with many, but not all, verbs of literal or metaphorical transfer. This paper investigates one specific version of preemption briefly entertained by Pinker (Language learnability and language development, Harvard University Pressm, 1984), which would account both for the existence of semantically overlapping constructions and for the fact that these constructions may preempt each other in the case of individual verbs. Typically, such pairs of grammatical constructions differ in their information-structural restrictions and speakers tend to choose the construction that best fits a given discourse context; when speakers use a construction even though there is an alternative that fits the discourse context better, children may take this as evidence that the alternative is not available for the specific verb in question. Two corpus studies are presented, comparing the information-structural profile of prepositional dative constructions containing verbs that may alternate between the dative and the ditransitive with the information structural profile of verbs that are restricted to the prepositional dative. For Pinker's preemptive mechanism to be feasible, there should be a clear and systematic difference in the information-structural profile of these two classes of verbs. However, no such difference can be found in actual usage. (shrink)

This book contains a variety of essays aimed at developing a philosophical defense of public goods against neo-liberal criticisms. Looking at concepts such as collective action, common property, intellectual property and issues such as health, education, welfare, environment, media, cities, and the prison industrial complex.

The cerebellum probably obeys the rules of sensorimotor integration common in the nervous system. One such a rule is formulated: the nervous system organizes spatial frames of reference for the sensorimotor apparatus and produces voluntary movements by shifting their origin points. We give examples of spatial frames of reference for different single- and multi-joint movements including locomotion and also illustrate that the process of motor development and learning may depend critically on the formation of appropriate frames of reference and the (...) organism's ability to manage them. We suggest that a solution to the problem of sensorimotor integration may not be trivial and may actually change the mental and experimental paradigms used in the understanding of the cerebellum and other brain structures, [HOUK et al.; SIMPSON et al.; SMITH; TIIACH]. (shrink)

Let us begin by proposing a sort of common denominator of the various conceptions of rationality, some feature that underlies practically all its definitions.

Drawing on the records of an “alcoholism counselling service” launched in the 13th arrondissement of Paris in 1954, this article studies how social work became part of the new scope of psychiatric care for alcohol addiction, at a time when new medical cures were becoming available. The content and structure of patient records, which we analyse in comparison with papers from medical and social work journals, provide an insight into the day-to-day tasks of the social workers, who worked as closely (...) as possible with alcoholic patients and their families. The article shows that the action of the social worker, which became central, although subordinated to that of psychiatric medicine, took on a psychotherapeutic dimension and was characterised by the need to gain the patient’s trust and ensure their adherence to treatment, thus marking a clear inflection in the relationship with beneficiaries. However, social work was still characterised by its constitutive ambiguity; its control and surveillance functions created difficulties, misunderstandings and disputes with the patients and their relatives. (shrink)

Husserl’s analyses of time consciousness have proved to be one of the more intricate challenges of his phenomenology. The article addresses his writings on time consciousness not with the aim of discussing or solving the epstemological problems that arise, but instead is interested in the descriptive procedure with which Husserl approaches them. The concept of ›Darstellung‹ serves as a starting point for this, a concept which Husserl takes up in order to describe the unified constitution of temporal objects ›vis à (...) vis‹ the continuity of their temporal givenness. Thus importing a traditionally poetological-rhetorical vocabulary – in rhetoric ›Darstellung‹ denotes vivid representation in language – into the analysis of temporal consciousness, it points to Husserl’s own descriptive project as potentially working in a similar manner. In Husserl’s writings, a ›Verlaufspoetik‹ (transitory poetics) comes into view, in which the textual flow of the descriptive process seems to match the stream of experience of temporal consciousness. (shrink)

Education projects are frequently given an emancipatory aim. However, this association is far from obvious, even from a theoretical point of view. German philosopher Max Stirner (1806-1856) is generally considered as a forefather of individualistic anarchism. He developed a radical educational thought focused on the emergence of an autonomous self. This article analyses the means and the ends of education according to Stirner in order to identify some of the intrinsic paradoxes of emancipatory education. It also furthers Stirner’s analysis in (...) a confrontation with the practicalities of contemporary education. (shrink)

The socialist project is burdened by a history of brutal failures. The authors of the papers collected in this volume are convinced that a democratic and humane socialism is both desirable and possible. They lay out their view of different aspects of this new socialism in this book. Anatole Anton and Richard Schmitt are both the editors and contributors to this book. -/- Select chapters translated into Spanish have appeared in a volume in Barcelona, Spain.

It remains to summarize the contributions which each of the three disciplines discussed here is making toward the development of a science of man. "Significs" makes a study of the effects on human behavior of the linguistic aspects of the evaluative process, the most distinctly human aspect of the behavior of the human organism. "Mathematical Biophysics" seeks to describe the events associated with evaluative processes in physico-mathematical terms. "Cybernetics" is discovering important invariants common to these processes and others, particularly those (...) observed in man-made machines and in situations which lend themselves to description in thermo-dynamic or statistical (order -- chaos) terms. (shrink)

Capitalism is in crisis. Is a better world possible and what would it look like? Taking Socialism Seriously breaks important new paths for significant social change by examining detailed questions seriously that had previously been neglected.

At the end of the first book of Apollonius' Argonautica, Telamon accuses Jason of plotting to leave Heracles behind, an insult for which Telamon later apologizes. This article suggests that their reconciliation unites the Alexandrian interest in what is appropriate for epic with Aristotelian views on anger and political friendship, two themes that resonate throughout the poem. While Telamon's apology and Jason's moderate response revise the structure of traditional epic quarrels, the portrayal of self-control in this episode constitutes a moral (...) exemplar in keeping with those Homeric scenes that were admired by ancient philosophers. (shrink)

In relating the problem of comparison to that of conceptualization, Dr. Sjoberg brings into focus a central methodological problem of social science. For to compare is to discover unity in diversity and differences among similarities, that is, to uncover structure. The first act in this process is to name the parts and the relations among them, and naming, of course, both stems from and induces conceptualizations.