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Psychophysiological responses have become a valuable tool in human-robot interaction since they provide an objective estimate of the user's psychological state. Unfortunately, their usefulness in rehabilitation robotics is uncertain since they are influenced by both physical activity and pathological conditions such as stroke. We performed psychophysiological measurements in subacute and chronic stroke...
Psychological states such as mood, motivation and engagement are known to be critical for the success of rehabilitation, and encouraging unmotivated stroke patients improves the likelihood of their eventual recovery. Psychological factors can be incorporated into the closed-loop control of biocooperative rehabilitation systems, augmenting the device with critical information about the patient state...
This study presents a biocooperative feedback loop where the difficulty of an upper extremity rehabilitation task is adjusted based on four psychophysiological measurements: heart rate, skin conductance, respiration and skin temperature. They are used both by themselves and in combination with task performance and biomechanics. Different variants of linear discriminant analysis are used for data fusion,...
The emotion recognition is one of the great challenges in human-human and human-computer interaction. In this paper, an approach for the emotions recognition based on physiological signals is proposed. Six basic emotions: joy, sadness, fear, disgust, neutrality and amusement are analysed using physiological signals. These emotions are induced through the presentation of IAPS pictures (International...
This paper explores the use of human physiology in adaptive game mechanics. The study shows evidence that galvanic skin response (GSR) can react to stress changes caused by game difficulties and that GSR positively and significantly correlates with negative game events (frustration events) rather than positive events (success events); moreover, continuous failures during game playing can trigger distress...
Assessing human stress in real-time is more difficult and challenging today. The present review deals about the measurement of stress in laboratory environment using different stress inducement stimuli by the help of physiological signals. Previous researchers have been used different stress inducement stimuli such as stroop colour word test (CWT), mental arithmetic test, public speaking task, cold...
This document presents two possible schemes suitable for stress detection. Considering only two physiological signals, namely Galvanic Skin Response and Heart Rate, both stress detection systems are able to detect in less than 10 seconds to what extend an individual is under stressing situations. Furthermore, their accuracy (around 95 %) and the time required to elucidate the stress level, yield to...
This paper presents the findings of a preliminary study about the use of bio-feedback sensors in the context of an educational hypermedia environment, skin conductance, blood volume pulse and heart rate physiological data were gathered. The aim of the study was to examine learners' emotional arousal variability, and possible correlations of the physiological data with other psychological constructs...
Rehabilitation robots, together with vision and audio systems form the multimodal environment for exercising the person in a number of ways, unavoidably influencing the physiological state of the subject. This paper examines viability of measuring psycho physiological responses to different robotic tasks. The heart rate, skin conductance, respiration and peripheral skin temperature were observed to...
This study report on an experimental investigation of the effects of T-shirts ventilative designs on thermoregulatory response during exercise. Seven short sleeved T-shirts of varying mesh styles and a control piece (100% cotton T-shirts without mesh fabrics) were designed. Six volunteers performed a treadmill protocol, which consisted of 10 min rest, 15 min running at 40% VO2max and 10 min rest,...
Since thermal comfort is becoming a frontier science combined with pyrology, architectural physics, physiology and psychology, as human important physiological indexes, skin temperature and heart rate variation are explored for the thermal comfort study in low-pressure environment. Important information of human thermal balance and thermal sensation can be obtained by testing the skin temperature,...
Accessibility for the blind in an urban space must be studied under real conditions in their daily environment. A new approach for evaluating the impact of environmental conditions on blind pedestrians is the objective measure of stress by the monitoring of the autonomic nervous system (ANS) activity. Original techniques of data analysis and spatial representation are proposed for the detection of...
An evaluation of a newly CE approved bedside monitoring device used in a general hospital ward is presented. This evaluation has shown that it is feasible to use the system within this environment to provide medical staff with supplementary information on patient health, at more frequent intervals than traditional monitoring methods. The physiological data recorded by the body worn device is wirelessly...
Recent microwave and millimeter wave nondestructive measurement in biomedical engineering are reviewed. Millimeter wave reflection from the human skin was studied in the frequency range of 37–74 GHz in steps of 1 GHz. The forearm and palm data were used to model the skin with thin and thick stratum corneum (SC), respectively. To fit the reflection data, a homogeneous unilayer and three multilayer...
Collaborative environments possess highly competitive settings not only from an individual's perspective, but also from the whole group's point-of-view. It starts becoming necessary to assess what makes users feel more compelled to collaborate with each other in such settings as well as identifying key interactive patterns which affect their behaviors. This assessment is becoming more and more possible...
In this work, we present the concept, the architecture and the evaluation of the INTREPID system. INTREPID is an advanced monitoring system which optimally classifies an individual's emotional state based on 5 pre-defined emotional classes, (relaxed, neutral, startled, apprehensive and very apprehensive), through association of the information arising from specific biological signals (Blood Volume...
Miniaturization of biomedical sensors has increased the importance of microsystem technology in medical applications, particularly microelectronics and micromachining. This paper presents a new approach to biomedical monitoring and analysis of selected human cognitive processes. The proposed technique measures human skin conductivity and heart rate using a dedicated measurement system which offers...
An approach is proposed for detecting heart rate for controlling electrically assisted bicycle. This method is based on capacitive coupling involving the electrode, the cloth and the skin. A proposed system was fabricated to explore the feasibility of the approach and evolution experiments were conducted for 4 men. Validation of the system revealed the following: (1) ECG signal was successfully obtained...
Emotions involved in all human interactions experience which were elicited by products or user-product interaction have become an important object of study in the field of CHI. Product emotion influences some aspects of interaction before, during and after the use of a product. This article aims to review selectively a fair proportion of the literature on method of measuring emotions or user affective...
This paper reports a novel contactless monitoring method to record reflective mode photoplethysmogram (PPG) on a sleeping bed for heart rate (HR) estimation. The electrocardiogram (ECG) and pulse transit time (PTT) were also measured in this study. ECG was measured from subjects' limbs whilst PPG was obtained from their right index fingers and their backs with and without direct contact between the...
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