719 research outputs found

    Neuroenhancement in Military Personnel::Conceptual and Methodological Promises and Challenges

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    Military personnel face harsh conditions that strain their physical and mental well-being, depleting resources necessary for sustained operational performance. Future operations will impose even greater demands on soldiers in austere environments with limited support, and new training and technological approaches are essential. This report highlights the progress in cognitive neuroenhancement research, exploring techniques such as neuromodulation and neurofeedback, and emphasizes the inherent challenges and future directions in the field of cognitive neuroenhancement for selection, training, operations, and recovery

    Pengukuran Arus dan Frekuensi pada Alat Elektrostimulator

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    Pengukuran merupakan kegiatan membandingkan suatu besaran yang diukur dengan alat ukur yang digunakan sebagai satuan. Alat ukur tens  ini digunakan untuk mengukur tingkat frekuensi keluaran, arus keluaran dan menampilkan bentuk sinyal pada suatu alat tens yang mempunyai standart tertentu untuk bisa digunakan. Tujuan dari penelitian ini adalah mendesain sebuah alat pengukuran arus dan frekuensi pada TENS yang memiliki nilai standart tertentu agar dapat digunakan untuk melakukan terapi kejut listrik yang memiliki tingkat frkuensi rendah ataupun frekuensi tinggi agar keluaran sesuai dengan standart yang digunakan. Keuntungan dari penelitian ini adalah sistem pengukuran frekuensi dan arus dapat langsung dilakukan tanpa memerlukan instalasi kelistrikan agar dapat segera melakukan pengukuran, karena alat yang dibuat penelitian ini bersifat portable atau tidak memerlukan instalasi listrik 220v. Penelitian ini menggunakan sensor arus berjenis ACS712 untuk mendeteksi arus keluaran dari alat TENS. Komponen yang digunakan pada penelitian ini antara seperti mikrokontroler ATmega328 sebagai pusat kendali dari pemberian perintah pada alat agar dapat bekerja, LCD TFT Nextion 3,2 inch sebagai sebagai penampilan arus dan frekuensi keluaran TENS dalam bentuk angkan serta penampilan bentuk sinyal dan modul charger sebagai pengisian baterai ketika baterai habis. Penelitian ini merupakan eksperimen murni dan belum ada peneliti yang membuat alat ini sebelumnya. Untuk penelitian lebih lanjut dapat menambahkan parameter lain dan mengembangkan bentuk sinyal menjadi 2 bentuk sinyal, menambahkan indikator tegangan sebagai indikator pengaman dan penambahan indikator daya baterai agar mengetahui presentase baterai yang tersisa

    A Review of Electrostimulation-based Cybersickness Mitigations

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    With the development of consumer virtual reality (VR), people have increasing opportunities to experience cybersickness (CS) –- a kind of visuallyinduced motion sickness (MS). In view of the importance of CS mitigation (CSM), this paper reviews the methods of electrostimulation-based CSM (e-CSM), broadly categorised as either “VR-centric” or “Human-centric”. “VR-centric” refers to approaches where knowledge regarding the visual motion being experienced in VR directly affects how the neurostimulation is delivered, whereas “Human-centric” approaches focus on the inhibition or enhancement of human functions per se without knowledge of the experienced visual motion. We DIFFERENT E-found that 1) most e-CSM approaches are based on visual-vestibular sensory conflict theory –- one of the generally-accepted aetiologies of MS, 2) the majority of eCSM approaches are vestibular system-centric, either stimulating it to compensate for the mismatched vestibular sensory responses, or inhibiting it to make an artificial and temporary dysfunction in vestibular sensory organs or cortical areas, 3) Vestibular sensory organbased solutions are able to mitigate CS with immediate effect, while the real-time effect of vestibular cortical areas-based methods remains unclear, due to limited public data, 4) Based on subjective assessment, VRcentric approaches could relieve all three kinds of symptoms (nausea, oculomotor, and disorientation), which appears superior to the human-centric ones that could only alleviate one of the symptom types or just have an overall relief effect. Finally, we propose promising future research directions in the development of e-CSM

    Combining brain-computer interfaces and assistive technologies: state-of-the-art and challenges

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    In recent years, new research has brought the field of EEG-based Brain-Computer Interfacing (BCI) out of its infancy and into a phase of relative maturity through many demonstrated prototypes such as brain-controlled wheelchairs, keyboards, and computer games. With this proof-of-concept phase in the past, the time is now ripe to focus on the development of practical BCI technologies that can be brought out of the lab and into real-world applications. In particular, we focus on the prospect of improving the lives of countless disabled individuals through a combination of BCI technology with existing assistive technologies (AT). In pursuit of more practical BCIs for use outside of the lab, in this paper, we identify four application areas where disabled individuals could greatly benefit from advancements in BCI technology, namely,“Communication and Control”, “Motor Substitution”, “Entertainment”, and “Motor Recovery”. We review the current state of the art and possible future developments, while discussing the main research issues in these four areas. In particular, we expect the most progress in the development of technologies such as hybrid BCI architectures, user-machine adaptation algorithms, the exploitation of users’ mental states for BCI reliability and confidence measures, the incorporation of principles in human-computer interaction (HCI) to improve BCI usability, and the development of novel BCI technology including better EEG devices

    Aerospace medicine and biology: A continuing bibliography with indexes, supplement 128, May 1974

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    This special bibliography lists 282 reports, articles, and other documents introduced into the NASA scientific and technical information system in April 1974

    Southwest Research Institute assistance to NASA in biomedical areas of the technology

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    Significant applications of aerospace technology were achieved. These applications include: a miniaturized, noninvasive system to telemeter electrocardiographic signals of heart transplant patients during their recuperative period as graded situations are introduced; and economical vital signs monitor for use in nursing homes and rehabilitation hospitals to indicate the onset of respiratory arrest; an implantable telemetry system to indicate the onset of the rejection phenomenon in animals undergoing cardiac transplants; an exceptionally accurate current proportional temperature controller for pollution studies; an automatic, atraumatic blood pressure measurement device; materials for protecting burned areas in contact with joint bender splints; a detector to signal the passage of animals by a given point during ecology studies; and special cushioning for use with below-knee amputees to protect the integrity of the skin at the stump/prosthesis interface

    Integrated Circuits and Systems for Smart Sensory Applications

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    Connected intelligent sensing reshapes our society by empowering people with increasing new ways of mutual interactions. As integration technologies keep their scaling roadmap, the horizon of sensory applications is rapidly widening, thanks to myriad light-weight low-power or, in same cases even self-powered, smart devices with high-connectivity capabilities. CMOS integrated circuits technology is the best candidate to supply the required smartness and to pioneer these emerging sensory systems. As a result, new challenges are arising around the design of these integrated circuits and systems for sensory applications in terms of low-power edge computing, power management strategies, low-range wireless communications, integration with sensing devices. In this Special Issue recent advances in application-specific integrated circuits (ASIC) and systems for smart sensory applications in the following five emerging topics: (I) dedicated short-range communications transceivers; (II) digital smart sensors, (III) implantable neural interfaces, (IV) Power Management Strategies in wireless sensor nodes and (V) neuromorphic hardware

    Aerospace medicine and biology: A cumulative index to a continuing bibliography (supplement 384)

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    This publication is a cumulative index to the abstracts contained in Supplements 372 through 383 of Aerospace Medicine and Biology: A Continuing Bibliography. It includes seven indexes: subject, personal author, corporate source, foreign technology, contract number, report number, and accession number
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