In a Mental Imagery Brain-Computer Interface the user has to perform a specific mental task that generates electroencephalography components, which can be translated in commands to control a BCI system. The development of a high-performance MI-BCI requires a long training, lasting several weeks or months, in order to improve the ability of the user to manage his/her mental tasks. This works aims to present the design of a MI-BCI combining mental imaginary and cognitive tasks for a severely motor impaired user, (...) involved in the BCI race of the Cybathlon event, a competition of people with severe motor disability. In the BCI-race, the user becomes a pilot in a virtual race game against up to three other pilots, in which each pilot has to control his/her virtual car by his/her mental tasks. We present all the procedures followed to realize an effective MI-BCI, from the user's first contact with a BCI technology to actually controlling a video-game through her EEG. We defined a multi-stage user-centered training protocol in order to successfully control a BCI, even in a stressful situation, such as that of a competition. We put a specific focus on the human aspects that influenced the long training phase of the system and the participation to the competition. (shrink)

The Internet is a physically connected network of computers of different type and capacity located at some distance from each other. The physical connection between the computers is maintained by electronic hardware, a number of sophisticated computer programs with cryptic names and millions of miles of cables. The large capacity computers are usually networked 24-hours a day, while the smaller ones are linked to the net only when their users wish to communicate. Therefore PC users entering the net usually first (...) build up a connection to a high capacity computer and utilize the latter’s 24-hour technical services; thus these computers are called “servers.”. (shrink)

Single-pulse and repetitive transcranial magnetic stimulation are used in clinical practice for diagnostic and therapeutic purposes. However, rTMS-based therapies that lead to a significant and sustained reduction in neuropsychiatric symptoms remain scarce. While it is generally accepted that the stimulation frequency plays a crucial role in producing the therapeutic effects of rTMS, less attention has been dedicated to determining the role of the electric field strength. Conventional threshold-based intensity selection approaches, such as the resting motor threshold, produce variable stimulation intensities (...) and electric fields across participants and cortical regions. Insufficient standardization of electric field strength may contribute to the variability of rTMS effects and thus therapeutic success. Computational approaches that can prospectively optimize the electric field and standardize it across patients and cortical targets may overcome some of these limitations. Here, we discuss these approaches and propose that electric field standardization will be instrumental for translational science frameworks aimed at deciphering the subcellular, cellular, and network mechanisms of rTMS. Advances in understanding these mechanisms will be important for optimizing rTMS-based therapies in psychiatry. (shrink)

The hippocampal formation is known for its importance in conscious, declarative memory. Here, we report neuroimaging evidence in humans for an additional role of the hippocampal formation in nonconscious memory. We maskedly presented combinations of faces and written professions such that subjects were not aware of them. Nevertheless, the masked presentations activated many of the brain regions that unmasked presentations of these stimuli did. To induce a nonconscious retrieval of the faces and face-associated occupational information, subjects were instructed to view (...) the previously masked faces and to guess the professional category of each person—academic, artist, and workman. Guessing the professional category of previously masked versus new faces activated the left and right hippocampal formation and right perirhinal cortex as well as bilateral fusiform areas and fronto-temporal areas known to mediate the retrieval of semantic information. These activations within the semantic processing system suggest that conceptual knowledge acquired during masking was nonconsciously retrieved. Our data provide clues to an analogous role of the hippocampus in conscious and nonconscious memory. (shrink)

A code of ethics is used by individuals to justify their actions within an environment. Medical professionals require a keen understanding of specific ethical codes due to the potential consequences of their actions. Over the past thirty years there has been an increase in the scope and depth of ethics instruction in the medical profession; however the teaching of these codes is still highly variable. This inconsistency in implementation is problematic both for the medical practitioner and for the patient; without (...) standardized training, neither party can be assured of the practitioner's overall depth of knowledge. Within the field of ethics certain principles have reached a consensus of importance. Incorporation of these concepts in meaningful ways via a consistent curriculum would provide students with an appropriate skill set for navigating their ethical environment. Moreover, this curriculum should also be extended to residents and professionals who may have missed formal ethical training. This would provide a consistent framework of knowledge for practitioners, creating a basis for clear judgment of complex issues. (shrink)

The great majority of phenotypic characteristics are complex traits, complicating the identification of the genes underlying their expression. However, both methodological and theoretical progress in genome‐wide association studies have resulted in a much better understanding of the underlying genetics of many phenotypic traits, including externally visible characteristics (EVCs) such as eye and hair color. Consequently, it has become possible to predict EVCs from human samples lacking phenotypic information. Predicting EVCs from genetic evidence is clearly appealing for forensic applications involving the (...) personal identification of human remains. Now, a recent paper has reported the genetic determination of eye and hair color in samples up to 800 years old. The ability to predict EVCs from ancient human remains opens up promising perspectives for ancient DNA research, as this could allow studies to directly address archaeological and evolutionary questions related to the temporal and geographical origins of the genetic variants underlying phenotypes. (shrink)

Imām Māturīdī, who is one of the symbolic names of Ahl as-Sunnah kalām and draws attention with his original ideas and striking determinations, revealed his views regarding kalām in his works called Kitāb al-tawhīd and Ta’wīlāt. Although the first one is in the field of kalām and the other is in the field of tafsīr, the second one has gained the identity of a work in which he declared many theological views. One of the theological issues in which his tafsīr (...) is the primary authority is the imamate and accordingly the companions. The Shīʿa’s making the imamate a part of the Islamic belief system and the takfı̄r of companions, who have a key role in this matter, paved the way for Ahl as-Sunnah theologians to put this issue on their agenda, so the issue has now become a matter of belief in its relevant dimension. The imagination of the companions, which took its place as a sub-topic of the imamate issue in the theological field, also entered the works of the theologians who expressed their views in this field, and a structure was formed that would respond to the perceptions of the Shīʿa, some other theological sects and some personalities that demean companions. Imām Māturīdī, who is undoubtedly one of the most important stones of Ahl as-Sunnah, also explained the subject with different dimensions and made statements that placed the companions in the position they deserved. Although Māturīdī did not reveal the concept of imamate and, accordingly, the companions in his theological work, he made some suggestions. He made important explanations on this issue in his tafsīr. The theologians, in their works in this field, highlighted the issues related to the companions, and whatever issues they touched on this matter, he often mentioned them in his tafsīr. Although there are partial differences in the subjects that Imām Māturı̄dı̄ concentrates on or comes into contact with due to the fact that he reveals his views mostly in his work of tafsīr rather than theology, the results he reached overlapped with the theologians. Imām Māturı̄dı̄ made explanations on the subject that can be grouped under headings such as the superior characteristics of the companions, the attitude to be developed towards them, the answer to the Shiite perception of the companions, the claims of conflict and struggles among the companions, and finally, evaluating them in accordance with their positions. Among these, the second title was mostly usūl-i fiqh, the last one was almost entirely tafsīr, while the others were subjects that were dealt with intensively in kalām. In this study, Imām Māturīdī’s vision of the companions will be revealed and what the companions mean in the mind and heart of an Islamic scholar who never neglected the mind and gave it great importance will be revealed. (shrink)

Ch. 1. Dukh--pastyrʹ cheloveka -- ch. 2. Sot︠s︡ialʹnye grani dukhovnogo.

Монография "Коммуникативные основы художественной культуры" посвящена раскрытию коммуникативного механизма культуры и роли художественной коммуникации в осуществлении диалога-отношения человека и мира.