Brain-computer interfaces (BCIs) have a potential to revolutionize human-computer interaction by enabling direct links between the brain and computer systems. Recent studies are increasingly focusing on practical applications of BCIs—e.g., home appliance control just thoughts. One non-invasive BCIs using electroencephalography (EEG) capitalizes event-related potentials (ERPs) in response target stimuli shown promise controlling appliance. In this paper, we present comprehensive dataset...

In this study, we investigated a feasibility to predict daily mental stress level from heart rate variability (HRV) using photoplethysmography (PPG) sensor in the wristband-type wearable device. We performed an experiment which each participant measured their PPG signals for 30 s wristband three times day week. The recorded were transmitted and stored at smartphone via Bluetooth link by custom-made software. At end of day, participants also self-evaluated perceived scale (PSS). A...

Using P300-based brain-computer interfaces (BCIs) in daily life should take into account the user's emotional state because various conditions are likely to influence event-related potentials (ERPs) and consequently performance of BCIs. This study aimed at investigating whether external stimuli affect a BCI, particularly built for controlling home appliances. We presented set auditory subjects, which had been selected each subject based on individual valence scores evaluated priori, while...

Image registration has been widely used in many image processing-related works.However, the exiting researches have some problems: first, it is difficult to find accurate information such as translation, rotation, and scaling factors between images; requires high computational cost.To resolve these problems, this work proposes a Fourier-based using pyramid edge images simple line fitting.Main advantages of proposed approach are that can compute at sub-pixel precision be carried out fast for...

Wireless brain-computer interface (BCI) system is supposedly more desirable than wired one in real life. However, the performance of Bluetooth communication used most wireless BCI systems can be degraded by interference from ambulant environments, which would turn affect operation. We aimed to study degradation caused WiFi that widely environments. The experiment was conducted under two conditions: 1) varying distance between EEG sensor and receiver; 2) receiver transmitter. result showed a...

Abstract Objective In the pursuit of refining P300-based brain-computer interfaces (BCIs), our research aims to propose a novel stimulus design focused on selective attention and task relevance address challenges BCIs, including necessity repetitive presentations, accuracy improvement, user variability, calibration demands. Approach oddball for we develop involving task-relevant dynamic stimuli implemented as finger-tapping enhance elicitation consistency event-related potentials (ERPs). We...

Abstract Objective. In the pursuit of refining P300-based brain–computer interfaces (BCIs), our research aims to propose a novel stimulus design focused on selective attention and task relevance address challenges BCIs, including necessity repetitive presentations, accuracy improvement, user variability, calibration demands. Approach . oddball for we develop involving task-relevant dynamic stimuli implemented as finger-tapping enhance elicitation consistency event-related potentials (ERPs)....

This paper presents a novel educational model of subjects electric, electronic and control for marine engineer in accordance with STCW 2010 amendments. In 2010, contents such courses engineering operations undergraduate programs maritime university should be updated correspondingly to new features. order propose the model, this analyses reviews on convention compared 1995. Also, paper, Korea other countries are analyzed is proposed. theoretical perspective practical perspective.

To implement a practical brain–computer interface (BCI) for daily use, continuing changes in postures while performing tasks must be considered the design of BCIs. examine whether performance BCI could depend on postures, we compared online P300-based BCIs built to select TV channels when subjects took sitting, recline, supine, and right lateral recumbent during use. Subjects self-reported degrees interference, comfort, familiarity after control each posture. We found no significant...

The use of the BCI as a communication tool in real life may be different from laboratory environment. As an example this difference between two environments, posture could consideration for performance BCI. In study, six participants kept their postures sitting, standing, and walking place used P300-based stimuli were presented augmented reality (AR) devices. Comparing performed online, there was no significant three postures. Indeed, area amplitude latency P300 N200 components seem to not...

Ictal swearing, as an epileptic manifestation, has rarely been reported. Despite its poor localization value and unclear mechanism, several previous studies have reported that it frequently originates from the temporal lobe more often non-dominant hemisphere. Herein, we report a case of 41-year-old right-handed man with history stereotypical manifestation ictal swearing left (dominant) hemisphere origin, confirmed by video electroencephalography monitoring. Reasonable suspicion repetitive...

The development of non-visual P300-based brain-computer interfaces (BCIs) is needed for patients with unreliable gaze control or healthy users visual distractors. As an alternative means, auditory BCIs have been developed, but reportedly showed relatively low performance. To elucidate the performance gap, this study investigated feature domain between and BCIs, along audiovisual BCI as combination two. Not only online test, also a cross-modality assessment was conducted to compare three...

In this paper, we propose an approach to improve detection of event related potential (ERP) component using hidden process model, which enables estimating the trial-to-trial variability ERP latency overcome limitation conventional averaging method for extracting components. By HPM, is a generative model underlying that has unknown onset timing, can estimate responses assumed processes cognitive functions and probability distribution timing each process. We applied HPM data obtained during...

이 연구의 목적은 교육정책의 실행자로서 교사의 영어교육정책에 대한 인식과 대응방식을 분석하여 영어교육정책의 방향에 시사점을 제공하는 데 있다. 이를 위해 최근 10년 간 대학입시제도와 밀접하게 연관되면서 영어교육과 관련하여 학교 현장에 큰 영향을 준 국가영어능력평가와 수능영어절대평가 정책을 토대로 고등학교 현직 교사 10명을 대상으로 심층면담을 진행하고 근거이론 접근법으로 분석하였다. 연구 결과, 교사들은 교사가 배제되고 현장에서의 실행가능성에 충분한 숙의 없이 진행된 하향식 대해 부정적 입장을 갖고 있는 것으로 나타났다. 의사소통역량을 함양하고 영어에 과도한 교육열, 입시로 인한 스트레스 감소를 실용영어능력을 강조하고 장기적으로는 절대평가로 전환하고자 하는 국가의 영어교육 대해서는 대체적으로 수긍하고 있었다. 그러나 현장의 준비 부족, 교육수요자의 신뢰 확보 실패, 정책실행자인 이해와 공감 형성결여 및 현장과 동떨어진 이상 추구로 인해 결과적으로 국가영어능력평가 정책은...

본 논의에서는 19세기를 전후로 하여 공주에서 활동했던 화산 정규한이 형성했던 불교 인식을 규명하였다. 정규한은 노론 내 호론계 인물로, 우암 송시열의 5대손인 성담 송환기의 문하에 종유한 끝에, 괄목할 만한 학문 세계를 구축한 전형적인 재야 유학자다. 정주학과 춘추학으로 이뤄진 우암학의 기조를 충실히 계승한 호론계의 후예답게, 요ㆍ순에서 공맹 및 정자ㆍ주자로 이어져 온 엄정한 유학적 도통론과 그 가지 담론인 벽이단론의 논조를 제시한 순정성 넘치는 학풍의 소유자였다. 이 같은 정규한의 사상적ㆍ이념적 성향은 그가 형성한 인식이 종교적 배타주의 노선에 기반했을 개연성을 시사해 주기도 한다.BR 인식과 관련하여 채택한 세 범주의 승려 호칭법은 매우 유익한 논의의 발판으로 작용하였다. ‘범칭ㆍ존칭어ㆍ기타 호칭어’로 분류된 호칭법 중에서 존칭어의 비중이 높았는데, 이는 고승ㆍ대덕들에 대해서는 우호적인 태도를 보였음을 확인시켜 준다. 실제 맺은 유의미한 유석(儒釋) 간의 교유는, 품었던...