Following the pioneering studies of the receptive field (RF), the concept gained further significance for visual perception by the discovery of input effects from beyond the classical RF. These studies demonstrated that neuronal responses could be modulated by stimuli outside their RFs, consistent with the perception of induced brightness, color, orientation, and motion. Lesion scotomata are similarly modulated perceptually from the surround by RFs that have migrated from the interior to the outer edge of the scotoma and in this way (...) provide filling-in of the void. Large RFs are advantageous to this task. In higher visual areas, such as the middle temporal and inferotemporal lobe, RFs increase in size and lose most of their retinotopic organization while encoding increasingly complex features. Whereas lowerlevel RFs mediate perceptual filling-in, contour integration, and figure–ground segregation, RFs at higher levels serve the perception of grouping by common fate, biological motion, and other biologically relevant stimuli, such as faces. Studies in alert monkeys while freely viewing natural scenes showed that classical and nonclassical RFs cooperate in forming representations of the visual world. Today, our understanding of the mechanisms underlying the RF is undergoing a quantum leap. What had started out as a hierarchical feedforward concept for simple stimuli, such as spots, lines, and bars, now refers to mechanisms involving ascending, descending, and lateral signal flow. By extension of the bottom-up paradigm, RFs are nowadays understood as adaptive processors, enabling the predictive coding of complex scenes. Top-down effects guiding attention and tuned to task-relevant information complement the bottom-up analysis. (shrink)

The article examines cultural anthropological approaches to cultural boundaries and cultural change. It suggests that these approaches to cultural change can be made fruitful for understanding how cultural elements spread across different scienti?c communities, and the possible effects such dynamics could have on the negotiation of boundaries in the ?eld. The article is based on an ethnographic study of nanoscale research and re?ects on where to look for moments of boundary transgression in this ?eld that is characterized by its multiple (...) dimensions of inclusion and distinction. (shrink)

I describe characteristic phenomena of quantum physics that suggest that reality appears to us in two domains: the open and well-known domain of empirical, material things—the realm of actuality—and a hidden and invisible domain of nonempirical, non-material forms—the realm of potentiality. The nonempirical forms are part of physical reality because they contain the empirical possibilities of the universe and can manifest themselves in the empirical world. Two classes of nonempirical states are discussed: the superposition states of microphysical entities, which are (...) nonempirical because observation destroys them, and the virtual states of material systems, which are nonempirical because they are empty. The non-empirical part to physical reality represents a predetermined and hidden order that exists before it is empirical, and the visible world is an emanation out of it. I discuss consequences for our understanding of human nature, the origin of life, and human values. Reality is an indivisible wholeness that is aware of its processes, like a Cosmic Spirit, and it reveals its awareness in the mindlike properties of elementary processes as well as in the human consciousness. Thus, one is led to G. W. F. Hegel's thesis that the Cosmic Spirit is thinking in us. (shrink)

The major theoretical framework relative to the perception of illusory figures is reviewed and discussed in the attempt to provide a unifying explanatory account for these phenomena.

This article is about the post-history of Hobbes’s name for the state and thus about the history of the name ‘Leviathan’ insofar as this name has remained the catchword for the (modern) state to this day (from the late 17th century to the beginning of the 21st century), but above all for that of absolutist-despotic proportions. This story, told here for the first time, is particularly interesting because it ultimately reveals a continuity in the understanding of Hob-bes that suggests that (...) this post-history not only has something to do with Hobbes’s Leviathan itself, but at least as much with its pre-history - with the name ‘Leviathan’, which Hobbes gave the state in reference to the biblical monster of the same name. (shrink)

The article investigates the interplay of moral rules in computer simulation. The investigation is based on two situations which are well-known to game theory: the prisoner''s dilemma and the game of Chicken. The prisoner''s dilemma can be taken to represent contractual situations, the game of Chicken represents a competitive situation on the one hand and the provision for a common good on the other. Unlike the rules usually used in game theory, each player knows the other''s strategy. In that way, (...) ever higher levels of reflection are reached reciprocally. Such strategies can be interpreted as moral rules.Artificial morality is related to the discipline of Artificial Life. As in artificial life, the use of genetic algorithms suggests itself. Rules of behaviour split and reunite as chromosome strings do. (shrink)

This major work covers almost all that has been learned about the acoustics of stringed instruments from Helmholtz's 19th-century theoretical elaborations to recent electroacoustic and holographic measurements.Many of the results presented here were uncovered by the author himself over a 20-year period of research on the physics of instruments in the violin family. Lothar Cremer is one of the world's most respected authorities on architectural acoustics and, not incidentally, an avid avocational violinist and violist.The book - which was published (...) in German in 1981 - first of all meets the rigorous technical standards of specialists in musical acoustics. But it also serves the needs and interests of two broader groups: makers and players of stringed instruments are expressly addressed, since the implications of the mathematical formulations are fully outlined and explained; and acousticians in general will find that the work represents a textbook illustration of the application of fundamental principles and up-to-date techniques to a specific problem.The first - and longest - of the book's three parts investigates the oscillatory responses of bowed strings. The natural nonlinearities that derive from considerations of string torsion and bending stiffness are deftly handled and concisely modeled.The second part deals with the body of the instrument. Special attention is given to the bridge, which transmits the oscillations of the strings to the wooden body and its air cavity. In this case, linear modeling proves serviceable for the most part - a simplification that would not be possible with lute - like instruments such as the guitar.The radiation of sound from the body into the listener's space, which is treated as an extension of the instrument itself, is the subject of the book's final part.Lothar Cremer is Professor Emeritus at the Technical University of Berlin, where he served as director of the Institute for Acoustical Engineering. (shrink)

I respond to Stanley Klein's critique of my essay “Quantum Reality, the Emergence of Complex Order from Virtual States, and the Importance of Consciousness in the Universe,” arguing in support of the necessity to derive a quantum perspective of evolution rather than adhering to an essentially classical view. In response to Klein's criticism of my concept of a cosmic morality, the origins of that concept are traced back to Zeno of Citium. I wholeheartedly embrace Klein's suggestion that the new science (...) inspires views of the human condition that can help us make the world a better place. (shrink)

There are few articles in science that remain relevant over a span of 100 years; Max Wertheimer's pioneering experimental studies on apparent motion and figural organization are notable exceptions. Wertheimer's 1912 account of motion perception started a revolution and established the Gestalt school of psychology. It also paved the way for further investigations of apparent motion perception, including subsequent research by Oliver Braddick, Stuart Anstis, Vilaynur Ramachandran, and others. Wertheimer's 1923 article on figural organization helped define grouping as a principle (...) of figure-ground perception. This book provides contemporary readers and researchers with Wertheimer's two pivotal articles, newly translated into English and each accompanied by a synopsis, and two essays on apparent motion and figural organization that describe the long-term impact of Wertheimer's work. The translation of the original German into readable English prose allows English-language readers for the first time to appreciate Wertheimer's visionary ideas. The accompanying essays tie Wertheimer's phenomenological descriptions to the underlying neuronal mechanisms, bridging the years between the articles' first publication and modern research. (shrink)

Die digitale Transformation erfasst die Medien der Literatur und Literaturkritik in unterschiedlicher Geschwindigkeit. Die Substituierung der gedruckten Zeitung, der Stammheimat der Literaturkritik, durch digitale Formate ist weit vorangeschritten. Auf dem Buchmarkt ist das gedruckte Hardcover nach wie vor ein relativ stabiles Element. Der Beitrag kommentiert diese Differenz in medienhistorischer Perspektive.

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Writing and Authority in Early ChinaLothar von FalkenhausenWriting and Authority in Early China. By Mark Edward Lewis. Albany: State University of New York Press, 1999. Pp. vii + 544. Hardcover $92.50. Paper $31.95.Writing and Authority in Early China is a forceful and sparklingly original work in which Mark Edward Lewis explores the role of writing and texts in the transformation of political authority during the Warring States, Qin, (...) and Western Han periods. Following in the footsteps of the author's well-received first book1 and his magisterial contribution to the Cambridge History of Ancient China,2Writing and Authority establishes Lewis as the premier Western historian of the crucial centuries surrounding the unification of China under a centrally administered empire in 221 B.C. The book's complex, comprehensive, and coherent argument is informed by a variety of Western theoretical approaches, but it principally emanates from a close reading of the full record of transmitted texts and recently excavated manuscripts on [End Page 127] bamboo or wooden slips. The inclusion of the latter class of sources, beset with treacherous problems of decipherment, is still unusual in mainstream sinological scholarship and indicates the author's supreme confidence in his philological skills. With a firm hand, undaunted by the multifarious nature of his materials, Lewis guides the reader to some fundamental themes in recent sinology, opening manifold novel perspectives along the way. Even when dealing with well-known texts, he often proposes striking reinterpretations.In his Introduction, Lewis enumerates six main functions of writing in ancient China: enforcing state authority; creating text-based communities and "public spheres"; transcending the confines of space, time, and human mortality; fashioning figures of authority in the past; standardizing specialized technical terminology; and encrypting secret meanings. In Lewis' own words, "the culminating role of writing in the period, and the key to its importance in imperial China, was the creation of parallel realities within texts that claimed to depict the entire world" (p. 4). This ultimately led to the formation of the Confucian canon as a "textual double of the polity" that could survive cataclysmic changes of regimes.In chapter 1, "Writing the State," Lewis points out that before the Warring States period Chinese writing occurred exclusively in religious contexts. After circa 500 B.C., written documents gradually came to be used in the administration of government and trade. Both in their details of formulation and in the implication that anything committed to writing was thereby supernaturally validated, these new types of documents exhibit pervasive continuity with the earlier kinds of texts used in ritual communication with the ancestral spirits. Such continuity is also reflected in the rise of religious beliefs in a netherworld governed by a bureaucratic hierarchy and administrative processes parallel to those of the world of the living. According to Lewis, "the most important modification in the shift to an administrative polity [in the Warring States] was the extension of writing to new elements of the population. The attributes of the Zhou nobility... were transferred to the common people in the administrative documents of the new state. This widening range of inscription into the state order altered the social meaning of being recorded from a sign of power to one of subjection" (p. 13).Warring States rulers were cast in the role not of the authors of texts but of the authority behind them. Administrative and legal texts were concerned, ultimately, with the proper naming of phenomena, a process that had to adapt itself continually to the changes of the times. The authority of rulers came to encompass both human society and the natural world. "Whereas local and central administration were largely created through reworking and rewriting the ritual bases of the old Zhou order by means of a rationalizing cosmology, the re-invention of rulership drew on the contemporary religious realm and what is sometimes described as shamanism to provide images of cosmic power" (p. 42). Lewis illustrates the mechanics for applying these universal principles of rulership by a comprehensive analysis of the Zhou li (or Zhou guan), emphasizing the cosmological arrangement of the ideal government described therein and the dual administrative and religious dimensions of... (shrink)