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229 results match your criteria: "Institute for Systems and Robotics[Affiliation]"
Front Neurorobot
December 2024
LaSEEB, Department of Bioengineering, Institute for Systems and Robotics (ISR-Lisboa), Instituto Superior Técnico, Lisbon, Portugal.
As robots become integral to various sectors, improving human-robot collaboration is crucial, particularly in anticipating human actions to enhance safety and efficiency. Electroencephalographic (EEG) signals offer a promising solution, as they can detect brain activity preceding movement by over a second, enabling predictive capabilities in robots. This study explores how EEG can be used for action anticipation in human-robot interaction (HRI), leveraging its high temporal resolution and modern deep learning techniques.
View Article and Find Full Text PDFeNeuro
December 2024
Institute for Systems and Robotics and Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal.
Alterations in white matter (WM) microstructure are commonly found in migraine patients. Here, we employ a longitudinal study of episodic migraine without aura using diffusion MRI (dMRI) to investigate whether such WM microstructure alterations vary through the different phases of the pain cycle. Fourteen patients with episodic migraine without aura related with menstruation were scanned through four phases of their (spontaneous) migraine cycle (interictal, preictal, ictal and postictal).
View Article and Find Full Text PDFLakartidningen
November 2024
forskare och universitetslektor, institutionen för informationsteknologi, Uppsala universitet; Institute for Systems and Robotics, University of Lisbon, Portugal.
There is a breathtakingly rapid development in various areas that take advantage of the ever-improving possibilities to record and analyze the electrical activity generated in the brain. In this article, we attempt to briefly describe some of these areas, including AI-assisted EEG interpretation, the use of BCI (brain-computer interface) in a medical setting, and the possible new applications connected to the development of very small wearable EEG devices. Furthermore, we discuss the concerns and challenges presented by these advancements in neurotechnology.
View Article and Find Full Text PDFInt J Comput Assist Radiol Surg
November 2024
Laboratory for Surgical Planning and Robotic Cognition (SPARC), Department of Artificial Intelligence in Biomedical Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany.
Radiography (Lond)
November 2024
Centro Hospitalar Universitário de Santo António, Unidade Local de Saúde de Santo António, Orthopedic Department, Porto, Portugal; ICBAS, School of Medicine and Biomedical Sciences, University of Porto, Portugal. Electronic address:
NMR Biomed
January 2025
Champalimaud Research, Champalimaud Foundation, Lisbon, Portugal.
J Neural Eng
October 2024
Bioengineering Department, Institute for Systems and Robotics-Lisboa, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal.
J Sleep Res
October 2024
Department of Neurophysiology, Unidade Local de Saúde de S. José, Centro Hospitalar Psiquiátrico de Lisboa, Lisbon, Portugal.
Sleep is vital for health. It has regenerative and protective functions. Its disruption reduces the quality of life and increases susceptibility to disease.
View Article and Find Full Text PDFMAGMA
October 2024
Max-Delbrück-Centrum Für Molekulare Medizin (MDC), Berlin Ultrahigh Field Facility, Berlin, Germany.
J Headache Pain
September 2024
Institute for Systems and Robotics - Lisboa and Department of Bioengineering, Instituto Superior Técnico, University of Lisbon, Lisbon, Portugal.
Background: The pathophysiology of migraine remains poorly understood, yet a growing number of studies have shown structural connectivity disruptions across large-scale brain networks. Although both structural and functional changes have been found in the cerebellum of migraine patients, the cerebellum has barely been assessed in previous structural connectivity studies of migraine. Our objective is to investigate the structural connectivity of the entire brain, including the cerebellum, in individuals diagnosed with episodic migraine without aura during the interictal phase, compared with healthy controls.
View Article and Find Full Text PDFFront Psychiatry
June 2024
IRCCS Fondazione Don Carlo Gnocchi, Milan, Italy.
Background: Autism Spectrum Disorder (ASD) is a neurodevelopmental disorder characterized by persistent deficits in social communication, social interaction, and restricted behaviors. The importance of early intervention has been widely demonstrated, and developmental trajectories in ASD emphasize the importance of nonverbal communication, such as intransitive gesture production, as a possible positive prognostic factor for language development. The use of technological tools in the therapy of individuals with ASD has also become increasingly important due to their higher engagement and responsiveness to technological objects, such as robots.
View Article and Find Full Text PDFData Brief
June 2024
NOVA Information Management School (Nova IMS), Universidade Nova de Lisboa, Lisbon 1070-312, Portugal.
Monitoring ocean surface temperature is critical to infer the variability of the upper layers of the ocean, from short temporal scales to climatic change scales. Analysis of the climatological trends and anomalies is fundamental to comprehend the long-term effects of climate change on marine ecosystems and coastal regions. The original data for the dataset presented was collected by the Portuguese Hydrographic Institute () using seven Ondograph and Meteo-oceanography buoys anchored offshore along the Portuguese coast to acquire ocean surface temperatures.
View Article and Find Full Text PDFMAGMA
July 2024
Max-Delbrück-Centrum Für Molekulare Medizin (MDC), Berlin Ultrahigh Field Facility, Berlin, Germany.
Front Robot AI
May 2024
Instituto Superior Técnico, Institute for Systems and Robotics, Lisbon, Portugal.
We recently developed a biomimetic robotic eye with six independent tendons, each controlled by their own rotatory motor, and with insertions on the eye ball that faithfully mimic the biomechanics of the human eye. We constructed an accurate physical computational model of this system, and learned to control its nonlinear dynamics by optimising a cost that penalised saccade inaccuracy, movement duration, and total energy expenditure of the motors. To speed up the calculations, the physical simulator was approximated by a recurrent neural network (NARX).
View Article and Find Full Text PDFInt J Comput Assist Radiol Surg
June 2024
Laboratory for Surgical Planning and Robotic Cognition (SPARC), Department of Artificial Intelligence in Biomedical Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany.
Purpose: This work presents a novel platform for stereo reconstruction in anterior segment ophthalmic surgery to enable enhanced scene understanding, especially depth perception, for advanced computer-assisted eye surgery by effectively addressing the lack of texture and corneal distortions artifacts in the surgical scene.
Methods: The proposed platform for stereo reconstruction uses a two-step approach: generating a sparse 3D point cloud from microscopic images, deriving a dense 3D representation by fitting surfaces onto the point cloud, and considering geometrical priors of the eye anatomy. We incorporate a pre-processing step to rectify distortion artifacts induced by the cornea's high refractive power, achieved by aligning a 3D phenotypical cornea geometry model to the images and computing a distortion map using ray tracing.
Comput Med Imaging Graph
July 2024
Centre for Vision, Speech and Signal Processing (CVSSP), The University of Surrey, UK. Electronic address:
In this paper, we hypothesize that it is possible to localize image regions of preclinical tumors in a Chest X-ray (CXR) image by a weakly-supervised training of a survival prediction model using a dataset containing CXR images of healthy patients and their time-to-death label. These visual explanations can empower clinicians in early lung cancer detection and increase patient awareness of their susceptibility to the disease. To test this hypothesis, we train a censor-aware multi-class survival prediction deep learning classifier that is robust to imbalanced training, where classes represent quantized number of days for time-to-death prediction.
View Article and Find Full Text PDFSci Data
April 2024
Portuguese Navy Research Center (CINAV), Portuguese Naval Academy (Escola Naval), Almada, 2810-001, Portugal.
As a coastal state, Portugal must ensure active surveillance over its maritime area, ensuring its proper control and inspection. One of the most critical inspection activities is the fishery inspection. To protect biodiversity, we must ensure that all the ships comply with the existing safety regulations and respect the current fishing quotas.
View Article and Find Full Text PDFBioengineering (Basel)
February 2024
Department of Clinical and Experimental Epilepsy, UCL Institute of Neurology, Queen Square, London WC1E 6BT, UK.
There are considerable gaps in our understanding of the relationship between human brain activity measured at different temporal and spatial scales. Here, electrocorticography (ECoG) measures were used to predict functional MRI changes in the sensorimotor cortex in two brain states: at rest and during motor performance. The specificity of this relationship to spatial co-localisation of the two signals was also investigated.
View Article and Find Full Text PDFMagn Reson Med
August 2024
Department of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, Montreal, Québec, Canada.
Purpose: Arterial spin labeling (ASL) is a widely used contrast-free MRI method for assessing cerebral blood flow (CBF). Despite the generally adopted ASL acquisition guidelines, there is still wide variability in ASL analysis. We explored this variability through the ISMRM-OSIPI ASL-MRI Challenge, aiming to establish best practices for more reproducible ASL analysis.
View Article and Find Full Text PDFAccid Anal Prev
June 2024
Civil Engineering Research and Innovation for Sustainability, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1, Lisboa, Portugal. Electronic address:
Today, cities seek to transition to more sustainable transportation modes. Cycling is critical in this shift, promoting a more beneficial lifestyle for most. However, cyclists are exposed to many hazardous circumstances or environments, resulting in accidents, injuries, and even death.
View Article and Find Full Text PDFSensors (Basel)
March 2024
Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal.
Increasing age is related to a decrease in independence of movement and with this decrease comes falls, millions of falls occur every year and the most affected people are the older adults. These falls usually have a big impact on health and independence of the older adults, as well as financial impact on the health systems. Thus, many studies have developed fall detectors from several types of sensors.
View Article and Find Full Text PDFJ Rehabil Med
March 2024
Faculty of Experimental Sciences, Francisco de Vitoria University, Pozuelo de Alarcón, Spain; Brain Injury and Movement Disorders Neurorehabilitation Group (GINDAT), Institute of Life Sciences, Francisco de Vitoria University, Pozuelo de Alarcón, Spain; Brain Damage Unit, Beata María Ana Hospital, Madrid, Spain.
Objective: To examine the clinical effects of combining motor imagery-based neurofeedback training with bilateral repetitive transcranial magnetic stimulation for upper limb motor function in subacute and chronic stroke.
Design: Clinical trial following an AB/BA crossover design with counterbalanced assignment.
Subjects: Twenty individuals with subacute (n = 4) or chronic stroke (n = 16).
MAGMA
October 2024
Institute for Systems and Robotics-Lisboa and Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal.
Objective: Diffusional kurtosis imaging (DKI) extends diffusion tensor imaging (DTI), characterizing non-Gaussian diffusion effects but requires longer acquisition times. To ensure the robustness of DKI parameters, data acquisition ordering should be optimized allowing for scan interruptions or shortening. Three methodologies were used to examine how reduced diffusion MRI scans impact DKI histogram-metrics: 1) the electrostatic repulsion model (Opt); 2) spherical codes (Opt); 3) random (Random).
View Article and Find Full Text PDFJ Magn Reson Imaging
December 2024
Department of Radiology, School of Health of Porto/Polytechnic Institute of Porto (ESS/IPP), Porto, Portugal.
Data Brief
April 2024
NOVA Information Management School (Nova IMS), Universidade Nova de Lisboa, Lisbon 1070-312, Portugal.
Unmanned vehicles have become increasingly popular in the underwater domain in the last decade, as they provide better operation reliability by minimizing human involvement in most tasks. Perception of the environment is crucial for safety and other tasks, such as guidance and trajectory control, mainly when operating underwater. Mine detection is one of the riskiest operations since it involves systems that can easily damage vehicles and endanger human lives if manned.
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