Background: Informed consent in the modern era is a common and important topic both for the well-informed patient and to prevent unnecessary litigation. However, the effectiveness of informed consent in trauma patients is an under-researched area. This paper aims to assess the differences in patient recall of the consent process and desire for information by performing a comparative analysis between orthopaedic trauma and elective patients. Methods: Information from 41 consecutive elective operations and 40 consecutive trauma operations was collected on the (...) first post-operative day. Results: 100% of elective patients and 90% of trauma patients knew what operation they had received (p = 0.06). Overall recall of complications was poor, but was significantly lower in trauma patients compared with elective patients (62% vs 22%, p<0.001). 30% of trauma patients desired more information about their operation compared to 12% of elective patients (p = 0.049), although only 35% of trauma patients wanted written as well as verbal explanations, compared to 85% of elective patients p<0.001). Overall 100% of elective and 90% of trauma patients were happy with the consent process (p = 0.06). Subset analysis of neck of femur compared to other trauma patients showed that the above factors were not significantly different between the two groups. Conclusions: Recall of complications in the trauma patients is significantly lower than in elective patients, although both groups scored poorly overall. Repeated verbal explanations should be reinforced with the option of additional information leaflets for trauma operations. Further research into the usefulness of DVDs for commonly performed operations is warranted, although official internet resources may be more cost-effective. (shrink)

In the quantum-Bayesian approach to quantum foundations, a quantum state is viewed as an expression of an agent’s personalist Bayesian degrees of belief, or probabilities, concerning the results of measurements. These probabilities obey the usual probability rules as required by Dutch-book coherence, but quantum mechanics imposes additional constraints upon them. In this paper, we explore the question of deriving the structure of quantum-state space from a set of assumptions in the spirit of quantum Bayesianism. The starting point is the representation (...) of quantum states induced by a symmetric informationally complete measurement or SIC. In this representation, the Born rule takes the form of a particularly simple modification of the law of total probability. We show how to derive key features of quantum-state space from (i) the requirement that the Born rule arises as a simple modification of the law of total probability and (ii) a limited number of additional assumptions of a strong Bayesian flavor. (shrink)

Puede ser hoy marxista la teoría de la cultura? -- Reproducción social y subordinación ideológica de los sujetos -- Cómo se forman las culturas populares?

t. 1. Drevniĭ mir Srednie veka -- t. 2. Srednevekovyĭ Vostok. Evropa XV-XVII vekov -- t. 3. Evropa i Amerika -- t. 4. Vtorai︠a︡ polovina XIX veka.

This paper presents a general computational treatment of how mammals are able to deal with visual objects and environments. The model tries to cover the entire range from behavior and phenomenological experience to detailed neural encodings in crude but computationally plausible reductive steps. The problems addressed include perceptual constancies, eye movements and the stable visual world, object descriptions, perceptual generalizations, and the representation of extrapersonal space.The entire development is based on an action-oriented notion of perception. The observer is assumed to (...) be continuously sampling the ambient light for information of current value. The central problem of vision is taken to be categorizing and locating objects in the environment. The critical step in this process is the linking of visual information to symbolic object descriptions; this is calledindexing, from the analogy of identifying a book from index terms. The system must also identifysituationsand use this knowledge to guide movement and other actions in the environment. The treatment focuses on the different representations of information used in the visual system.The four representational frames capture information in the following forms: retinotopic, head-based, symbolic, and allocentric. The functional roles of the four frames, the communication among them, and their suggested neurophysiological realization constitute the core of the paper. The model is perforce crude, but appears to be consistent with all relevant findings. (shrink)

We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.

We identify two aspects of the problem of maintaining perceptual stability despite an observer's eye movements. The first, visual direction constancy, is the (egocentric) stability of apparent positions of objects in the visual world relative to the perceiver. The second, visual position constancy, is the (exocentric) stability of positions of objects relative to each other. We analyze the constancy of visual direction despite saccadic eye movements.Three information sources have been proposed to enable the visual system to achieve stability: the structure (...) of the visual field, proprioceptive inflow, and a copy of neural efference or outflow to the extraocular muscles. None of these sources by itself provides adequate information to achieve visual direction constancy; present evidence indicates that all three are used.Our final question concerns how information processing operations result in a stable world. The three traditionally suggested means have been elimination, translation, or evaluation. All are rejected. From a review of the physiological and psychological evidence we conclude that no subtraction, compensation, or evaluation need take place. The problem for which these solutions were developed turns out to be a false one. We propose a “calibration” solution: correct spatiotopic positions are calculated anew for each fixation. Inflow, outflow, and retinal sources are used in this calculation: saccadic suppression of displacement bridges the errors between these sources and the actual extent of movement. (shrink)

Pictures of normal brain activity during human thought can be worth a great deal. Electrophysiology and functional neuroimaging together allow both temporal and spatial dimensions of neurocognitive functions to be explored. Although these techniqueshave their limitations, the Cognitive Neuroscience approach is well-suited to pursuing questions about how words are perceived, understood, and remembered.

Multilingual dictionary of philosophical terms.

One prominent argument against the use of preimplantation genetic diagnosis to select a deaf embryo with the aim of creating a deaf child is that it violates the child’s right to an open future. This paper challenges the open future argument against deaf embryo selection, criticizing its major premise that deafness limits a child’s opportunity range in ways that compromise their future autonomy. I argue that this premise is not justified and is supported by negative presumptions about deaf embodiments that (...) are suspect and in need of further argumentation. First, available interpretations of the open future concept fail to justify the devaluation of deaf traits as inherently autonomy-diminishing. Second, arguing against deaf embryo selection requires demonstrating that a deaf trait generally constrains opportunity ranges independent of social context. But such analyses neglect important social and relational components of autonomy. For these reasons, merely appealing to the child’s right to an open future does not sufficiently support the conclusion that deaf embryo selection is wrong. (shrink)