Visuospatial dysfunction may play a crucial role in gait disturbance in Parkinson's disease (PD), in particular how visual exploration of the environment is integrated into gait control. In this study, we tested the hypothesis that people with PD would visually sample their environment less frequently than controls when walking under different levels of environmental complexity and dual-task. W...

AIMS AND METHODS In order to elucidate the neural mechanisms of delirium, we administered the anticholinergic drug, biperiden (40 mg/kg i.p.), to 10 adult male Wistar rats and examined the resulting polygraphic recordings, including electroencephalography (EEG), electrooculography (EOG), and electromyography (EMG), for 60 min following injection. EEG data were investigated quantitatively by pow...

Bio-based human computer interface (HCI) has attracted more and more attention of researches all over the world in recent years. In this paper, a HCI system which based on electrooculogram (EOG) is proposed. It transforms electrical potentials recorded by horizontal and vertical EOG into a computer in order to control external equipment. The system consists of EOG acquisition unit, EOG pattern ...

Mass production of high-quality graphene nanosheets (GNs) is essential for practical applications. We report that oxidation of graphite by low concentration KMnO₄ at relatively high temperature (60 °C) leads to edge-selectively oxidized graphite (EOG) which preserves the high crystalline graphitic structure on its basal planes while the edges are functionalized by oxygen-containing groups. Long...

6 LIST OF ORIGINAL PAPERS 7 LIST OF ABBREVIATIONS 8 INTRODUCTION 9 AIMS 12 BACKGROUND 13 Sleep 13 A model of sleep regulation 13 Sleep EEG and sleep stages 14 Sleep cycles 15 Sleepiness 16 Definitions 16 Prevalence of sleepiness 17 Sleep deprivation 18 The Circadian rhythm 19 The Sleep debt 20 Shift work and sleepiness 22 The Countermeasures 23 Sleep, naps or breaks as countermeasure 23 Drugs a...

The use of Electrooculogram (EOG) signals for developing Human-Computer Interfaces is increasing in the recent times. Several advantages including ease and flexibility in acquiring EOG signals have encouraged insight into EOG based research. In order to identify optimal features for EOG signals for rehabilitation applications, it is necessary to apply the statistical basis to decide the selecti...

The electroolfactogram (EOG) is a negative electrical potential recorded at the surface of the olfactory epithelium of vertebrates. It represents primarily, if not exclusively, the summated generator potential in the olfactory receptor neurons (ORNs). While a number of studies suggest that secretory or inhibitory events may also contribute to the EOG, these are not well established. This review...

Electro-olfactogram (EOG) oscillations induced by odorant stimulation have been often reported in various vertebrates from fishes to mammals. However, the mechanism of generation of EOG oscillations remains unclear. In the present study, we first characterized the properties of EOG oscillations induced by amino acid odorants in the rainbow trout and then performed a computer simulation based on...

Traffic accidents are caused by driver fatigue or distraction in many cases. To prevent accidents, several low-cost hypovigilance (hypo-V) systems were developed the past based on a multimodal-hybrid (physiological and behavioral) feature set. Similarly this paper, real-time inattention (Hypo-Driver) detection system is proposed through multi-view cameras biosignal sensors to extract hybrid fea...