PurposeThis study aimed to investigate whether oxygenated hemoglobin generated during a motor imagery task is associated with the motor learning level of the task.MethodsWe included 16 right-handed healthy participants who were trained to perform a ball rotation task. Hemodynamic brain activity was measured using near-infrared spectroscopy to monitor changes in oxy-Hb concentration during the BR MI task. The experimental protocol used a block design, and measurements were performed three times before and after the initial training of the BR task as (...) well as after the final training. The BR count during training was also measured. Furthermore, subjective vividness of MI was evaluated three times after NIRS measurement using the Visual Analog Scale.ResultsThe results showed that the number of BRs increased significantly with training. VAS scores also improved with training. Furthermore, oxy-Hb concentration and the region of interest showed a main effect. An interaction was confirmed, and it was ascertained that the change in oxy-Hb concentrations due to training was different for each ROI. The most significant predictor of subjective MI vividness was supplementary motor area oxy-Hb concentration.DiscussionHemodynamic brain activity during MI tasks may be correlated with task motor learning levels, since significant changes in oxy-Hb concentrations were observed following initial and final training in the SMA. In particular, hemodynamic brain activity in the SMA was suggested to reflect the MI vividness of participants. (shrink)

The vestibulo-ocular reflex plays an important role in controlling the gaze at a visual target. Although patients with vestibular hypofunction aim to improve their VOR function, some retain dysfunction for a long time. Previous studies have explored the effects of direct current stimulation on vestibular function; however, the effects of random noise stimulation on eye–head coordination have not previously been tested. Therefore, we aimed to clarify the effects of high frequency noisy vestibular stimulation on eye–head coordination related to VOR function. (...) Thirteen healthy young adult participants with no serious disease took part in our study. The current amplitude and density used were 0.4 mA and 0.2 mA/cm2, respectively, with a random noise frequency of 100–640 Hz. The electrodes were located on both mastoid processes. The stimulus duration and fade in/out duration were 600 and 10 s, respectively. Subjects oscillated their head horizontally, gazing at the fixation point, at 1 Hz for 30 repetitions. The coordination of eye–head movements was measured by eye-tracking and a motion capture system. Peak-to-peak angles for eye and head movement and deviation of the visual line from the fixation target revealed no significant differences between HF-nVS and sham. The lag time between the eye and head movement with HF-nVS post-stimulation was significantly shorter than that of the sham. We found that HF-nVS can reduce the lag time between eye and head movement and improve coordination, contributing to a clear retinal image. This technique could be applied as a form of VOR training for patients with vestibular hypofunction. (shrink)

社会の平和的秩序は、その諸制度と構成員たちの協力により形成・維持される。第二次世界大戦後の日本においては、社会の急速な変動に伴って、人間関係が不安定になり、さまざまな局面で制度とのギャップから混乱が生 じてきている。新しい秩序の確立を軸にして、ジェンダー、人づくり、グローバリゼーション、社会保障などの現代的課題について考察する。.

世界的ベストセラーの問いかけに私たちはどう答えるのか。分子生物学の黎明期に、初めて人間と生命の神秘にせまったジャック・モノー。その思想を原典から読み解き、40年後のいま、モノーに答える。.

In the standard Okishio-Morishima approach, the existence of profits is proved to be equivalent to the exploitation of labor. Yet, it can also be proved that the existence of profits is equivalent to the “exploitation” of any good. Labor and commodity exploitation are just different numerical representations of the productiveness of the economy. This paper presents an alternative approach to exploitation theory which is related to the “New Interpretation” (Duménil 1980; Foley 1982). In this approach, labor exploitation captures unequal social (...) relations among producers. The equivalence between the existence of profits and labor exploitation holds, whereas it is proved that there is no relation between profits and commodity “exploitation.”. (shrink)

Wabi Sabi is the Japanese Zen philosophy that all things are imperfect, unfinished and impermanent. It is a fresh way of seeing and moving through the world when our lives, literally and figuratively, feel cluttered. This book shows us how to apply this concept in the context of daily life and offers ideas on how to see it, embrace it and incorporate it into everyday thoughts, objects and situations."--Publisher description.

We develop a semiotic scheme of time, in which time precipitates from the repeated succession of punctuating the progressive tense by the perfect tense. The underlying principle is communication among local participants. Time can thus be seen as a meaning-making, semiotic system in which different time codes are delineated, each having its own grammar and timekeeping. The four time codes discussed are the following: the subjective time having tense, the objective time without tense, the static time without timekeeping, and the (...) inter-subjective time of the E-series. Living organisms adopt a time code called the E-series, which emerges through the local synchronization among organisms or parts of organisms. The inter-subjective time is a new theoretical dimension resulting from the time-aligning activities of interacting agents. Such synchronization in natural settings consists of incessant mutual corrections and adjustments to one’s own punctuation, which is then constantly updated. Unlike the third-person observer keeping the objective time while sitting outside a clock, the second-person negotiators participate in forming the E-series time by punctuating and updating the interface through which different tenses meet at the moment of “now.” Although physics allows physicists to be the only interpreters, the semiotic perspective upends the physical perspective by letting local participants be involved in the interpretation of their mutual negotiations to precipitate that which is called time. (shrink)

Anticipatory acts or predictive behavior are prerequisites for living organisms to sustain their survival when escaping from a predator, catching prey, or schooling. For example, catching prey requires that the predator perform some procedures that are equivalent to estimating the directional movement of the prey, its speed and its distance relative to the predator. Underlying these procedures is time experience, which does not adhere to man-made mechanical clocks. Living organisms keep time based on the local activities of each participant and (...) form ecological clocks together. The timekeeping of ecological clocks has been called E-series time, which is interactive in character and consists of mutual alignment of timing that is co-adjusted to each other’s movements and rhythms. A main objective of our current work is to illustrate how E-series time is used for flows of anticipatory acts. To explain such predictive moves and their efforts based on how the perspective of the immediate future affects the present, we resort to the organismic activity of revising the preceding acts in retrospect and semiotic scaffolding that extends beyond simple linear causality. Special attention is paid to the construction of the notion of retrocausal scaffolding, which is a series of dialogical punctuations or mutual coordination of rhythms for the joint production of the present moment of now. Retrocausal scaffolding is synonymous with negotiated anticipation, which is a semiotic/communicative account of revising the preceding acts in the present moment. (shrink)

Shehtman and Skvortsov introduced Kripke bundles as semantics of non-classical first-order predicate logics. We show the structural equivalence between Kripke bundles for intermediate predicate lógics and Kripke-type frames for intuitionistic modal propositional logics. This equivalence enables us to develop the semantical study of relations between intermediate predicate logics and intuitionistic modal propositional logics. New examples of modal counterparts of intermediate predicate logics are given.

:This paper explores the foundations of the theory of exploitation as the unequal exchange of labour. The key intuitions behind all of the main approaches to UEL exploitation are explicitly analysed as a series of formal axioms in a general economic environment. Then, a single domain condition calledLabour Exploitationis formulated, which summarizes the foundations of UEL exploitation theory, defines the basic domain of all UEL exploitation forms, and identifies the formal and theoretical framework for the analysis of the appropriate definition (...) of exploitation. (shrink)

The best seller and perennial classic by one of the great Zen Buddhist masters--now available in Spanish. En los más de cuarenta años que han transcurrido desde su publicación original, Mente Zen, mente de principiante se ha convertido en uno de los grandes clásicos de la espiritualidad moderna, muy querido, continuamente releído y profusamente recomendado como el mejor libro que se puede leer sobre el Zen. Suzuki Roshi presenta las bases —desde los detalles de la postura y la respiración (...) en zazen hasta la percepción de la no dualidad— de un modo que, además de ser notablemente claro, resuena con la alegría de la comprensión desde la primera hasta la última página. (shrink)

This special 10th anniversary edition of the David Suzuki classic, re-examines our place in the natural world in light of sweeping environmental changes and recent advances in scientific knowledge.

Timing adjustment is an important ability for living organisms. Wild animals need to act at the right moment to catch prey or escape a predator. Land plants, although limited in their movement, need to decide the right time to grow and bloom. Humans also need to decide the right moment for social actions. Although scientists can pinpoint the timing of such behaviors by observation, we know extremely little about how living organisms as actors or players decide when to act – (...) such as the exact moment to dash or pounce. The time measurements of an outsider-observer and the insider-participants are utterly different. We explain how such essential operations of timing adjustment and temporal spanning, both of which constitute a single regulated set, can be carried out among organisms. For this purpose, we have to reexamine the ordinary conception of time. Our specific explanatory tools include the natural movement known as the upbeat (anacrusis) in music, a rhythmic push for the downbeat that follows, which predicts future moves as an anticipatory lead-in. The scheme is situated in and is the extension of our formulation of E-series time, i.e., timing co-adjusted through interaction, which is derived from the semiotic/communicative perspectives. We thereby demonstrate that a prediction-based timing system is not mechanical but communicative and entails meanings for future anticipation. (shrink)

本書は数学的言語や概念の背景にある普遍的な問題を探りながら、その延長線上に優雅な姿を現すeiπ=-1という等式の世界へあなたをエスコートします。.

あらゆるものごとを平準化する「デジタル化」の中で、人間の身体・脳・心や社会のしくみがいま大きく変容しつつある。「国民の欲望」の自己統治、新たな共同関係の創出、リスクをめぐる正義の対立の調整、人間観・存 在観の再構築。これらの課題群に対して、健康とエンハンスメント、脳と人格の改造、動物とロボットの境界、リスク言説と研究規制の根拠等を論じながら、システム倫理学の視点から大胆な解法を提示する。.

思想家・後藤新平は、「儒服をつけた英雄」蕃山から何を学んだのか? 百年先を読んだ政治家、後藤新平(1857-1929)の思想はどのようにして培われてきたのか。後藤新平が終生の愛読書としていた熊沢蕃山(1619-91)の『集義和書』を手がかりに、思想家・後藤新平の知ら れざる中枢に切り込む。.

Previous studies have shown that viewing cute pictures leads to performance improvement in a subsequent fine motor task. We examined the beneficial effects of viewing cute pictures in a more complex sporting skill by comparing three conditions and two tests. The participants, all of whom were college basketball players, performed 16 free throws in each condition. In the no-pressure test, male participants improved performance after viewing pictures of baby animals but not after adult animals and no pictures. In the pressure (...) test, no significant improvement was observed. For female participants, the cuteness-viewing effect was not observed in both tests. The results suggest that viewing cute pictures may improve performance during basketball free throws in a low-pressure situation by narrowing the breadth of attentional focus and inducing approach motivation and caregiving behaviors. (shrink)

Abstract:Pedro Erber discusses with Naoki Sakai the history of Heidegger's influence on philosophy in Japan.

A formal and functional study of the three meters of Old Norse eddic poetry, fornyroislag, malahattr, and ljooahattr, this book provides their systematic account (synchronic, diachronic, and from a comparative Germanic perspective). With thorough data presentation, detailed philological analysis, and sophisticated linguistic explanation, it will be of interest to Germanic philologists/linguists, medievalists, and metrists of all persuasions.".