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Department of Physics, Faculty of Sciences and Technology, Universidade NOVA de Lisboa, Lisbon, Portugal, Laboratory for Instrumentation, Biomedical Engineering and Radiation Physics, UNL, Lisbon and Portugal

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10 Papers

RehabVisual: Adapting and Testing the Visuomotor Skills Stimulation Platform on Patients with Multiple Sclerosis

Topics: Health Monitoring Devices; Rehabilitation Technology; Diagnostic devices

Authors: Margarida Henriques ¹ , Maria Mendes ² , Ana Martins ² , Carla Quintão ^{1

;

3} and Cláudia Quaresma ^{1

;

3}

Affiliations: ¹ Physics Department, NOVA School of Science and Technology – FCT NOVA, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal , ² Neurology Department, Hospital Garcia de Orta, 2805-267 Almada, Portugal , ³ LIBPhys-UNL, Physics Department, NOVA School of Science and Technology – FCT NOVA, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal

Digital Object Identifier: 10.5220/0012463700003657

Proceedings of BIODEVICES 2024, ISBN: 978-989-758-688-0

Quick Abstract

Multiple Sclerosis (MS), the most prevalent immune-mediated inflammatory demyelinating disease affecting the Central Nervous System (CNS), has an estimated global incidence of 2,8 million individuals. Although its symptomatology is highly varied and unpredictable, depending on the lesions’ location in the CNS, visual impairments are among the most common manifestations. However, conventional methods for assessing and rehabilitating visuomotor competences are not sufficient to deliver objective assessments or personalized therapies. The current study addresses this gap by adapting and testing the RehabVisual platform’s usability in MS patients. RehabVisual, developed in previous studies, aims to objectively assess visuomotor skills through an integrated low-cost eye tracking system, offering specific clinical intervention. Before clinical application, a normative base was established using 50 healthy individuals for later comparison. The experimental group comprised 25 MS patients with and without confirmed visuomotor alterations. The protocol involved viewing three visual stimuli for later calculation of the mean Euclidean distance between the gaze and stimulus positions using the eye tracker, for further assessment of the patients’ performance in tracking the stimulus. The findings confirmed diagnosed visual impairments, along with their quantification and storage for monitoring and rehabilitation purposes, highlighting the platform’s potential as an auxiliary tool for healthcare professionals.

Ortho-Monitorizer: A Portable Device to Monitor the Use of Upper Limb Orthoses - A Concept Proof

Topics: Health Monitoring Devices; Rehabilitation Technology; Wearable and Mobile Devices; Biomedical Equipment & Instrumentation

Authors: Raquel Gonçalves ¹ , Carla Quintão ^{1

;

2} , Ricardo Vigário ^{1

;

2} and Cláudia Quaresma ^{1

;

2}

Digital Object Identifier: 10.5220/0011012000003123

Proceedings of BIODEVICES 2022/BIOSTEC, ISBN: 978-989-758-552-4

Quick Abstract

This article presents the development of a wearable and portable system, the Ortho-Monitorizer, which allows an objective, continuous and simultaneous monitoration of the temperature and pressure exerted on the skin on the 3 main pressure points derived from the use of a hand and wrist orthosis. It also allows the monitorization of the patient’s compliance to the orthosis, providing its time of use. This way, adjustments to the orthosis can be optimized, reducing the discomfort felt by the patient, increasing compliance, reducing the risk of pressure sores’ formation derived from inadequate levels of pressure applied, and consequently, increasing the effectiveness of orthosis’ use. Therefore, an Arduino Uno, powered by a powerbank, is used as microcontroller. Three force sensors and three temperature sensors are controlled by the microcontroller to detect the pressure and temperature. A Bluetooth Low Energy module is used to send data from the Arduino to an android application under development, which will allow healthcare professionals to consult all the information and clinical history relating to each patient, as well as allowing the patient to develop a greater awareness and sense of responsibility regarding their performance in relation to the guidelines provided by the health professional.

The Mindfulness Meditation Effect on States of Anxiety, Depression, Stress and Quality of Life

Topics: Physiological and Behavioral Modeling; Therapeutic Systems and Rehabilitation Technologies

Authors: Pedro Morais ¹ , Ana P. Pinheiro ² , Miguel S. Fonseca ³ and Carla Quintão ⁴

Affiliations: ¹ LIBPhys, NOVA School of Science and Technology, NOVA University of Lisbon, Lisbon, Portugal , ² Faculty of Psychology, University of Lisbon, Lisbon, Portugal , ³ Center for Mathematics and Applications, NOVA School of Science and Technology, NOVA University of Lisbon, Lisbon, Portugal , ⁴ NOVA School of Science and Technology - Department of Physics, NOVA University of Lisbon, Lisbon, Portugal

Digital Object Identifier: 10.5220/0010854900003123

Proceedings of HEALTHINF 2022/BIOSTEC, ISBN: 978-989-758-552-4

Quick Abstract

Purpose: This paper aims to study how mindfulness meditation can be used to prevent, or improve, states of anxiety, depression, stress and loss of quality of life. Although this model of meditation has been associated with a healthier life, there is a need for scientific evidence-based on longitudinal results. Methods: Twenty-five volunteers, asymptomatic of psychological distress, participated in this research project attending a Mindfulness-Based Stress Reduction (MBSR) course. The status of each individual was assessed for 18 weeks, with three scales: World Health Organization Quality of Life (WHOQOL), Profile of Mood States (POMS) and Depression, Anxiety and Stress Scale (DASS). There were four evaluation periods: Pre/Peri/Post-MBSR course and a fourth follow-up, after two months. Results: Comparing the beginning to the end of the MBSR course, a significant reduction was observed in mean results of self-reported anxiety: -66.0% (p<0.001), stress: -52.0% (p<0.001), depression: -51.0% (p<0.001) and Total Mood Disturbance (TMD): -19.0% (p<0.001), as well as an increase in quality of life: 11.2% (p<0.001). Conclusion: The current values suggest that the practice of mindfulness meditation, characterized by self-regulation of attention, can be used as a proactive way to prevent and respond to psychopathological disorders.

Analysis of the Relationship between Electrodermal Activity and Heart Rate with Pain in Individuals with a Shoulder Pathology

Topics: Biomedical Sensors; Electrocardiography and Heart Monitoring; Wearable and Mobile Devices; Biomedical Equipment & Instrumentation

Authors: M. Oliveira ¹ , C. Quintão ^{2

;

1} , R. Vigário ^{2

;

1} , B. Mendes ³ , C. Caldeira ³ , F. Rodrigues ³ and C. Quaresma ^{2

;

1}

Affiliations: ¹ Departamento de Física, Faculdade de Ciências e Tecnologias, Universidade Nova de Lisboa, 2829-516 Monte da Caparica, Portugal , ² Laboratório de Instrumentação, Engenharia Biomédica e Física da Radiação (LIBPhys-UNL), Departamento de Física, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, Monte da Caparica, 2892-516, Caparica, Portugal , ³ Área de Medicina Física e Reabilitação, Hospital Curry Cabral, Centro Hospitalar Lisboa Central, Portugal

Digital Object Identifier: 10.5220/0008945001100117

Proceedings of BIODEVICES 2020/BIOSTEC, ISBN: 978-989-758-398-8

Quick Abstract

Currently, pain analysis in a clinical environment is not common and is at fault for being subjective and always dependent on a personal response. Therefore, it is imperative to use physiological signals to quantify pain and make diagnosis more objective. This article aims to study the relationship between pain, through its analog scale, with the electrodermal and cardiac signals of individuals characterized by having a shoulder pathology that gives rise to recurrent pain. This study was carried out on 21 patients from Hospital Curry Cabral, who were part of the Occupational Therapy department’s care in the area of Physical Medicine and Rehabilitation, and 18 individuals without any pathology, thus serving as a control group. All participants followed an experimental protocol consisting in the measurement of electrodermal and cardiac signals and pain level when performing two different movements. The results suggest that there is indeed a relationship between the two measured signals and pain. The greater the pain experienced by the individual, the greater the amplitude of the electrodermic signal and heart rate appears to be.

RehabVisual: Implementation of a Low Cost Eye Tracker without Pre-calibration

Topics: Rehabilitation Technology; Diagnostic devices

Authors: Pedro Dias ¹ , Ana Ferreira ^{2

;

3} , Ricardo Vigário ^{1

;

2} , Cláudia Quaresma ^{1

;

2} and Carla Quintão ^{1

;

2}

Affiliations: ¹ Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal , ² LIBPhys - UNL, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal , ³ Departamento de Saúde, Escola Superior de Saúde, Instituto Politécnico de Beja, 7800-111 Beja, Portugal

Digital Object Identifier: 10.5220/0009148002350241

Proceedings of BIODEVICES 2020/BIOSTEC, ISBN: 978-989-758-398-8

Quick Abstract

Visual impairments affect the life of millions of people. Some of these impairments can be corrected or diminished. Visual stimulation is one way of visual rehabilitation, that has produced better results when used in the early years of life. As there is nothing standardized in this field, a platform named RehabVisual was developed (Machado et al., 2018; Santos, 2018). This platform has the objective of creating an individual visuomotor rehabilitation for children under two years old, that were born prematurely. In order to reach a therapists' need, a video analysis tool was developed. This tool should be capable of following the motion of the patients' eyes, with the purpose of facilitating and making the analysis of their reactions to the stimuli more objective. The solution developed on this paper consists on the creation of an eye tracker system, that does not need to be pre-calibrated and is low-cost. The eye tracker was tested in healthy individuals and the results show that is very effective in detecting horizontal eye variations.

GNEUROPATHY: Validation Process at Clinical Environment

Topics: Health Monitoring Devices; Diagnostic devices

Authors: Claudia Quaresma ^{1

;

2

;

3} , Madalena Gomes ¹ , Heitor Cardoso ³ , Nuno Ferreira ³ , Ricardo Vigário ^{1

;

2} , Carla Quintão ^{1

;

2} and Micaela Fonseca ^{1

;

2

;

3

;

4}

Affiliations: ¹ Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2892-516 Monte da Caparica, Portugal , ² Laboratório de Instrumentação, Engenharia Biomédica e Física da Radiação (LIBPhys-UNL), Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2892-516 Monte da Caparica, Portugal , ³ VR4NeuroPain, Rua Comandante António Feio nº26 1C1, 2800-255 Almada, Portugal , ⁴ Universidade Europeia, Laureate International Universities, Estrada da Correia, nº53, 1500-210 Lisboa, Portugal

Digital Object Identifier: 10.5220/0007579702750279

Proceedings of BIODEVICES 2019/BIOSTEC, ISBN: 978-989-758-353-7

Quick Abstract

Spinal cord injuries are one of the most traumatic situations with a major impact on a person's quality of life. This type of injury have a extremely impact in the performance of daily life activities not only due to motor alterations but also due to the appearance of neuropathic pain Throughout the rehabilitation process the evaluation and intervention methodologies are not very systematic and are not personalized. Thus, to bridge this gap, the VR4NeuroPain was developed a technology that associates virtual reality with a glove "GNeuroPathy". The glove "GNeuroPathy" allows the collection of physiological parameters, namely to identify the electrodermic activity (EDA) while the patient carries out activities in an immersive environment. The main objective of this article is to present the validation process of the "GNeuroPathy" in clinical context. "GNeuroPathy" was applied to a group of 17 individuals with incomplete spinal cord injury. The results showed that "GNeuroPathy" is easy to apply and is suitable for comfort and texture. Data were also collected from EDA and it was found that there is a significant difference in signal amplitude in patients with low and high functionality.

The Mindfulness Meditation Effect on Brain Electrical Activity: Stress Assessment, Concentration State and Quality of Life

Authors: Pedro Morais ¹ and Carla Quintão ²

Affiliations: ¹ Department of Physics, Faculty of Sciences and Technology, Universidade NOVA de Lisboa, Lisbon, Portugal, Laboratory for Instrumentation, Biomedical Engineering and Radiation Physics, UNL, Lisbon, Portugal, Biomedical Engineering Doctoral Program, UNL, Lisbon and Portugal , ² Department of Physics, Faculty of Sciences and Technology, Universidade NOVA de Lisboa, Lisbon, Portugal, Laboratory for Instrumentation, Biomedical Engineering and Radiation Physics, UNL, Lisbon and Portugal

Proceedings of DCBIOSTEC 2019

Quick Abstract

Being healthy is much more than not being sick. It is essentially living day-to-day under a physical and mental well-being. In Europe a large part of the population suffers from depression, anxiety or stress. This public health problem needs urgent treatment for which the individual's psychic self-regulation can respond. The proposed alternative for improving quality of life is an approach to Mindfulness meditation. It is hoped that the beneficial effect of this practice in a continuous way, living the present in "mindfulness", contributes to improve the individual mental state releasing from a depressive past effect or from a future wrapped in anxiety. Based on visual stimuli, concentration test and stress-inducing challenges, 30 individuals are evaluated at regular intervals during 8 weeks of Mindfulness Based Stress Reduction (MBSR) course. Physiological signals are recorded longitudinally through EEG, ECG and EDA. At the same time, each individual completes three inquiries assessing quality of life (WHOQOL), profile mood state (POMS) and depression, anxiety and stress scale (DASS). Applying the neurophysiologic processing and classification data, with synchronous sources isolation, it is intended to verify functional changes that occur in the pre-frontal cortex. This results will inferring that it is possible to change the cerebral electrical activity with the thought. At the same time, it is expected a slowed heart/sweating rate and an increase in the ability to concentrate, as well as a significant improvement in the individual emotional control response. The current PhD study in Biomedical Engineering intends to show that the Mindfulness meditation practice, being "here and now", promotes a healthy mental health, featured by attention self-regulation and the decrease of anxiety, depression or stress. It can be used as a promising treatment for clinical disorders affecting a large part of the population.

VMSReport: An Application for Visual Performance and Motor Skills Evaluation

Topics: Health Monitoring Devices; Rehabilitation Technology; Diagnostic devices

Authors: Ana Isabel Ferreira ^{1

;

2

;

3} , Cláudia Quaresma ^{1

;

3} and Carla Quintão ^{1

;

3}

Affiliations: ¹ Departamento de Física, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, Caparica, Portugal , ² Departamento de Saúde, Escola Superior de Saúde do Instituto Politécnico de Beja, Beja, Portugal , ³ LIBPhys - UNL, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, Caparica, Portugal

Digital Object Identifier: 10.5220/0007581102800284

Proceedings of BIODEVICES 2019/BIOSTEC, ISBN: 978-989-758-353-7

Quick Abstract

With the increase of evidence-based practice, the registration and dissemination of the assessment data, became more and more important. In paediatric rehabilitation those procedures are particularly important since they allow for an initial characterization of the clinical situation, to compare results in different assessment moments and to disseminate the evaluation outcomes. However, in several kinds of evaluation, data registration is a complex and slow process. Similarly, the comparison of raw score to standard score can be very time consuming. To minimize that challenge it is important to develop a digital system that makes the registration fast and objective. The main purpose of this paper is to present VMSReport: an application to registrate visuomotor performance data, visual perception, as well as and motor coordination, in children aged 2 years and older. That digital tool allows also to compare results between various moments of assessment and can automatically generate a report for each evaluation. It also builds a database, which facilitates the process of global data analysis and modelling. This tool was developed in a clinical environment, giving clear answers to requests from rehabilitation caregivers. A pilot study, with 10 children, has already been carried out. The VMSReport can now be used.

Development of a Parameter Calculator in Cardiovascular Perfusion

Topics: Biomedical Equipment; Health Monitoring Devices

Authors: Inês Dias ¹ , Pedro Fonseca ² , Duarte Furtado ² , Inês Figueira ² , Paulo Franco ² , Vanda Cláudio ² , Helena Antunes ² , José Fragata ² , Cláudia Quaresma ¹ and Carla Quintão ¹

Affiliations: ¹ Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, Portugal , ² Centro Hospitalar de Lisboa Central, Portugal

Digital Object Identifier: 10.5220/0006723502540257

Proceedings of BIODEVICES 2018/BIOSTEC, ISBN: 978-989-758-277-6

Quick Abstract

Technology has played an increasingly important role in the health sector, with new devices allowing for better real-time monitoring of patients’ biosignals. Among those, the ones developed with perfusion in mind are extremely useful, during cardiothoracic surgery, since they provide detailed information about the vital signs of the patient. However, doctors and technicians have often to calculate several physiological parameters, which help them make clinical decision during such surgical interventions. In this context, the authors present a software tool – BioMEP: Perfusion Calculator Application, built in a partnership between the Department of Cardiothoracic Surgery of Santa Marta Hospital and the Department of Physics of the Faculty of Sciences and Technology of the NOVA University of Lisbon, and which fulfils the needs of the surgical team. BioMEP - Perfusion Calculator Application is a safe, intuitive and user-friendly tool that incorporates and integrates department-specific perfusion parameters and calculations, in a single platform, and allows for higher intervention efficiency, while minimizing the errors of the required calculation, with the concomitant improvement in patient safety.

RehabVisual: Development of an Application to Stimulate Visuomotor Skills

Topic: Rehabilitation Technology

Authors: Raquel Machado ¹ , Ana Ferreira ^{2

;

3

;

1} , Carla Quintão ^{1

;

4} and Claudia Quaresma ^{1

;

4}

Affiliations: ¹ Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, Portugal , ² Centro Hospitalar de Lisboa Central, Portugal , ³ Escola Superior de Saúde, Instituto Politécnico de Beja, Portugal , ⁴ Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Portugal

Digital Object Identifier: 10.5220/0006597001730178

Proceedings of BIODEVICES 2018/BIOSTEC, ISBN: 978-989-758-277-6

Quick Abstract

The stimulation of visuomotor skills has a relevant role in the rehabilitation of children with neurological dysfunctions / pathologies. However, the methods of evaluation and intervention for children under the age of 18 months are few systematic and not directed to the problem of each one. For this reason it was important to develop a system that will fill this gap. Therefore, the main purpose of this paper is to present the development process of a tool called RehabVisual - evaluation and stimulation of visuomotor competences. RehabVisual has the objective to promote the evaluation and the stimulations of visuomotor skills in children between the ages of 0 and 18 months. The platform has two sessions: database that records all the clinical information of the child and protocol with stimuli according to the development of the child. This plataform it was realized with physicians and occupations therapists from the Service of Physical Medicine and Rehabilitation (PMR) of the Hospital D. Estefânica of the Hospital Center of Lisbon Central and it was approved by the Portuguese Ethics Committees of this Hospital. The RehabVisual can be used by physicians, occupational therapists, and caregivers and is characterized for being a tool user-friendly, versatile and adaptable to the needs of each child.