The phylogenetic position of the hagfish remains enigmatic. In contrast to molecular data that suggest monophyly of the cyclostomes, several morphological features imply a more ancestral state of this animal compared with the lampreys. To resolve this question requires an understanding of the embryology of the hagfish, especially of the neural crest. The early development of the hagfish has long remained a mystery. We collected a shallow‐water‐dwelling hagfish, Eptatretus burgeri, set up an aquarium tank designed to resemble its habitat, and (...) successfully obtained several embryos. By observing the histology and expression of genes known to play fundamental roles in the neural crest, we found that the hagfish crest develops as delaminating migratory cells, as in other vertebrates. We conclude that the delaminating neural crest is a vertebrate synapomorphy that seems to have appeared from the beginning of their evolutionary history, before the splitting away of the hagfish lineage. BioEssays 30:167–172, 2008. © 2008 Wiley Periodicals, Inc. (shrink)

日常においてはいつも素通りされている豊かな経験の世界がある―。“自明”であるがゆえに眼を向けられることのないこの経験の世界を現象学は精査し、われわれにとっての「現実」が成立する構造を明るみに出す。創始 者フッサール以来続く哲学的営為の核心にあるものは何か。そしていまだ汲みつくせないその可能性とは。本書は粘り強い思索の手触りとともに、読者を生と世界を見つけなおす新たな思考へと誘う。.

The development of phenomenological philosophy in Japan is a well-established tradition that reaches back to the early 20th-century. The past decades have witnessed significant contributions and advances in different areas of phenomenological thought in Japan that remain unknown, or only partially known, to an international philosophical public. This volume offers a selection of original phenomenological research in Japan to an international audience in the form of an English language publication. The contributions in this volume range over classical figures in the (...) phenomenological movement, recent trends in French phenomenology, and contemporary inter-disciplinary approaches. In addition to this diverse engagement with European thinkers, many of the contributions in this volume establish critical and complimentary discussions with 20th-century Japanese philosophers. (shrink)

Pockett has drawn an alternative conclusion from the data of Libet, Alberts, Wright, and Feinstein , and suggested that it takes 80 ms, rather than 500 ms, for the sensation evoked by a stimulus to enter awareness. Here, I suggest that our conscious sensation evolves over time, during the period from 80 to 500 ms after a stimulus, until the sensation is stably localized in space.

How parents talk about social events shapes their children’s understanding of the social world and themselves. In this study, we show that parents in a society that more strongly values individualism and one that more strongly values collectivism differ in how they talk about negative social events, but not positive ones. An animal puppet show presented positive social events and negative social events. All shows contained two puppets, an actor and a recipient of the event. We asked parents to talk (...) to their 3- and 4-years old children about these events. A total of 26 parent–child dyads from the United States and Japan participated. The principal dependent measure was how much parent talk referred to the actor of each type of social event. There were no cultural differences observed in positive events – both the United States and Japanese parents discussed actors more than recipients. However, there were cultural differences observed in negative events – the United States parents talked mostly about the actor but Japanese parents talked equally about the actor and the recipient of the event. The potential influences of these differences on early cognitive and social development are discussed. (shrink)

Husserl’s theory of the phenomenological reduction is often explained by a radicalchange of attitude. Such an explanation is useful but sometimes misleading. TheIdea of Phenomenology clearly shows that the original idea of the reduction wasachieved through a radicalized critique of evidence. Although Husserl’s appealto evidence has often been criticized as an unjustified limitation of philosophicalthinking, a close examination of Husserl’s lectures reveals that the very ‘limitation’ to the phenomenological evidence breaks our naturalinclination toward objective identities and liberates our thinking from (...) the naturalbut misleading division between ‘transcendence’ and ‘immanence.’ Thus, thephenomenological reduction can be interpreted as a transition from the thinkingwithout regard to evidence to the philosophizing intrinsically mediatedby evidence, which can secure access for intuitive analysis to every conceivabletype of givenness insofar as it manifests itself. (shrink)

This article considers Socrates's conception of courage in Plato's Socratic dialogues. Although the Laches, which is the only dialogue devoted in toto to a pursuit of the definition of courage, does not explicitly provide Socrates's definition of courage, I shall point out clues therein which contribute to an understanding of Socrates's conception of courage. The Protagoras is a peculiar dialogue in which Socrates himself offers a definition of courage. Attending to the dramatic structure and personalities of the dialogue, I will (...) point out that Socrates does not commit to the definition and that the hedonism and the definition of courage are used to disclose Protagoras's confusion regarding virtue. Following one of the clues within the Laches I will turn to the Apology and indicate Socrates's conception of courage which is based on his awareness of lack of knowledge of death and his religious conviction that nothing will happen for the good in life or in death. Finally I will show that such conception of Socratic courage satisfies the criteria in the Laches. (shrink)

Sex determination in most organisms involves a simple binary fate choice between male or female development; the outcome of this decision has profound effects on organismal biology, biochemistry and behaviour. In the nematode C. elegans, there is also a binary choice, either male or hermaphrodite. In C. elegans, distinct genetic pathways control somatic and germline sexual cell fate. Both pathways share a common set of globally acting regulatory genes; however, germline-specific regulatory genes also participate in the decision to make male (...) or female gametes. The determination of sexual fate in the germline of the facultative hermaphrodite poses a special problem, because first sperm then oocytes are produced. It has emerged that additional layers of post-transcriptional regulation have been imposed to modulate the activities of the global sex-determining genes, tra-2 and fem-3; the balance between these activities is crucial in controlling sexual cell fate in the hermaphrodite germline. BioEssays 23:596–604, 2001. © 2001 John Wiley & Sons, Inc. (shrink)

Early modern humans developed mental capabilities that were immeasurably greater than those of nonhuman primates. We see this in the rapid innovation in tool making, the development of complex language, and the creation of sophisticated art forms, none of which we find in our closest relatives. While we can readily observe the results of this high-order cognitive capacity, it is difficult to see how it could have developed. We take up the topic of cave art and archeoacoustics, particularly the discovery (...) that cave art is often closely connected to the acoustic properties of the cave chambers in which it is found. Apparently, early modern humans were able to detect the way sound reverberated in these chambers, and they painted artwork on surfaces that were acoustic “hot spots,” i.e., suitable for generating echoes. We argue that cave art is a form of cross-modality information transfer, in which acoustic signals are transformed into symbolic visual representations. This form of information transfer across modalities is an instance of how the symbolic mind of early modern humans was taking shape into concrete, externalized language. We also suggest that the earliest rock art found in Africa may constitute one of the first fossilized proxies for the expression of full-fledged human linguistic behavior. (shrink)

Using artificially synthesized stimuli, previous research has shown that cotton-top tamarin monkeys easily learn simple AB grammar sequences, but not the more complex AnBn sequences that require hierarchical structure. Humans have no trouble learning AnBn combinations. A more recent study, using similar artificially created stimuli, showed that there is a neuroanatomical difference in the brain between these two kinds of arrays. While the simpler AB sequences recruit the frontal operculum, the AnBn array recruits the phylogenetically newer Broca’s area. We propose (...) that on close inspection, reported vocal repertoires of Old World Monkeys show that these nonhuman primates are capable of calls that have two items in them, but never more than two. These are simple AB sequences, as predicted by previous research. In addition, we suggest the two-item call cannot be the result of a combinatorial operation that we see in human language, where the recursive operation of Merge allows for a potentially infinite array of structures. In our view, the two-item calls of nonhuman primates result from a dual-compartment frame into which each of the calls can fit without having to be combined by an operation such as Merge. (shrink)

In this paper, I propose a possible reinterpretation of phenomenology using a newly defined concept of ‘mediation.’ First, I address the question: What are the ‘things themselves’ that are given as the result of the phenomenological epoché? I would answer that they are neither material objects nor merely subjective experiences, but rather specific occurrences of ‘mediations.’ Second, under the influence of the Japanese philosopher Hajime Tanabe, I will define ‘mediation’ as a non-separable occurrence of differentiating and connecting. Third, I shall (...) claim that the concept of ‘phenomenon’ itself should be reinterpreted in terms of its character of mediation. Then, I will discuss central issues in phenomenology such as intentionality, time, and intersubjectivity in order to test the applicability of the proposed concept of mediation. To conclude, I shall summarize the potential of the idea that phenomenology can be reinterpreted using the concept of mediation. (shrink)

本書の第1部は近代日本の思想家がグリーンの理想主義をどのように受容し、それをどう批判し、日本の伝統的思想とどのように融合させ、独自の思想を展開してきたかを中心問題とする。とりあげられる思想家・学者は中 島力造・高山樗牛、綱島梁川、西田幾多郎、河合榮治郎の五人である。第2部はグリーンの形而上学、道徳哲学、政治哲学、宗教思想の中心問題を永遠意識の視点から体系的に再検討することを目的とした。.

We revisit the EPR problem and make clear what is a correct comprehension of its problem. When one applies the quantum mechanics correctly, it will be shown that there is no paradox. According to these lines of thought, a quantum teleportation scheme without resort to the von Neumann projection postulate is presented.

Many functional glycoproteins are expressed on the lymphocyte cell surface. Some of them carry O-linked oligosaccharides (O-glycans), which are conjugated through serine or threonine residues. During various biological processes, including T-cell activation, a tetrasaccharide on the T-cell surface is dramatically converted to a branched hexasaccharide, called core2 O-glycan. The same structural change in O-glycans is also found on the lymphocytes from patients with immunodeficiency conditions such as Wiskott-Aldrich syndrome and AIDS. Several studies revealing the roles of core2 O-glycans in immune (...) responses show that this is a biologically significant change. In particular, core2 O-glycans expressed on the cell surface reduce cell–cell interactions, thereby regulating immune responses. Furthermore, core2 O-glycan is a key backbone structure in forming selectin ligands. Thus, O-linked oligosaccharides, in particular those containing core2 branches, play vital roles in immune responses and may play dual roles in certain situations. This review will summarize the results obtained from various studies investigating the roles of O-glycans in immunological processes. BioEssays 23:46–53, 2001. © 2001 John Wiley & Sons, Inc. (shrink)

The aim of this paper is to reveal Socrates as a thorough democrat. In the first section, I will disprove the credibility of Xenophon’s Memorabilia, a common source for scholars who view Socrates as an antidemocratic thinker. I will then argue, in the second section, that the views of a few scholars who portray Socrates as a prodemocratic thinker represent a far-from-satisfactory depiction of his political views. In the third section, I will then demonstrate that Socrates’ criticism of democracy is (...) not of democracy itself nor of Athenian laws, but instead a criticism of a particular sort of democracy seen in the period of Athenian imperialism, and that it derives from his fundamental recognition of human ignorance. After pointing out Socrates’ special preference for the democratic laws of Athens, seen in the Crito, I will establish, in the fourth section, a preference in his philosophy showing him as a staunch democrat who upheld the concept of the rule of law. (shrink)

In theLysisSocrates deals with the problem of what is a friend and what is friendship. After giving an introduction and a synopsis of theLysisin section one, I explain, in section two, Socrates’ view that a true friend is “what is akin” or “what is belonging to oneself” which is what is taken from oneself and discovered in another person. When this happens among two persons, they become friends to each other. The content of what is akin is either a good (...) characteristic or ways or form of the soul. Friendship is the desire for what is akin. In section three I show that Socrates remains inaporiawhile he faces several problems. Unless he is able to answer such problems, he will not be truly confident about what is a friend. In section four I deal with and refute Penner’s and Rowe’s view that a true friend means wisdom. In section five I examine the view of friendship which occurs among people who share common deficit. As a conclusion, in section six, I reflect on the significance of my interpretation and the role of theLysisin Plato’s philosophy. (shrink)

Nous avons trois objectifs dans cet article. Le premier est de montrer la pensée et le comportement de Yasuma Takata (1883-1972), auteur quasiment inconnu en Occident, mais qui donna pourtant au Japon ses premières théories sociologiques et socio-économiques générales. Le deuxième est d’examiner comment ces pensée et comportement sont liés à la responsabilité de la guerre dans la seconde guerre mondiale. Le troisième consiste à montrer que cette pensée est profondément connectée au courant de la pensée japonaise moderne à travers (...) la théorie de Maruyama et des opinions des Ôe et Kawabata. Classification JEL : B15, B31, N45. (shrink)