A5080681482- Neurological disorders and treatments
- Semiconductor Quantum Structures and Devices
- EEG and Brain-Computer Interfaces
- Advanced Semiconductor Detectors and Materials
- Neuroscience and Neural Engineering
- Parkinson's Disease Mechanisms and Treatments
- Semiconductor materials and devices
- Semiconductor Lasers and Optical Devices
- Quantum Dots Synthesis And Properties
- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Advanced Sensor and Energy Harvesting Materials
- Spectroscopy and Laser Applications
- Functional Brain Connectivity Studies
- Complex Systems and Time Series Analysis
- Strong Light-Matter Interactions
- Advanced Memory and Neural Computing
- Ecosystem dynamics and resilience
- Transcranial Magnetic Stimulation Studies
- Heart Rate Variability and Autonomic Control
- ECG Monitoring and Analysis
- Tactile and Sensory Interactions
- Electrochemical sensors and biosensors
- Education, sociology, and vocational training
- Nonlinear Dynamics and Pattern Formation
Universidade do Porto
2019-2024
INESC TEC
2019-2024
Institute for Systems Engineering and Computers
2020-2022
Bangor University
2017
University of Aveiro
2016
Universidade Estadual Paulista (Unesp)
2012-2013
Universidade Estadual de Londrina
2005-2009
Deep brain stimulation (DBS) surgery is the gold standard therapeutic intervention in Parkinson’s disease (PD) with motor complications, notwithstanding drug therapy. In intraoperative evaluation of DBS’s efficacy, neurologists impose a passive wrist flexion movement and qualitatively describe perceived decrease rigidity under different parameters electrode positions. To tackle this subjectivity, we designed wearable device to quantitatively evaluate changes during neurosurgery procedure,...
Photoluminescence (PL) measurements as a function of temperature and excitation intensity were carried out in sample containing two InGaAs∕InAlAs superlattices, grown on the same InP substrate, with quantum wells barriers different widths. The fluctuations confinement potential for excitons both structures are investigated by following blueshift PL peaks increasing well rising intensity, at low temperatures. A decrease full width half maximum power was also observed. change linewidth is...
We study the impact of random pinning fields on emergence synchrony in Kuramoto model complete graphs and uncorrelated complex networks. consider with uniformly distributed directions homogeneous heterogeneous (Gaussian) field magnitude distribution. In our analysis we apply Ott-Antonsen method annealed-network approximation to find critical behavior order parameter. case fields, a tricritical point above which second-order phase transition gives place first-order when network is either...
Deep brain stimulation of the Anterior Nucleus Thalamus (ANT-DBS) is an effective therapy in epilepsy. Poorer surgical outcomes are related to deviations lead from ANT-target. The target identification relies on visualization anatomical structures by medical imaging, which presents some disadvantages. This study aims research whether ANT-LFPs recorded with PerceptTM PC neurostimulator can be asset DBS-target. For this purpose, 17 features were extracted LFPs a single patient, who stayed at...
A study was conducted on potential fluctuations using the photoluminescence (PL) technique with temperature and excitation intensity variations, in a sample containing InGaAs∕InGaAlAs coupled double quantum wells, spikes of InGaAlAs different thicknesses, single well as control. With inclusion spike at center well, an increase magnitude fluctuation occurs, relation to control due contribution from both interface roughness compositional disorders fluctuations. The enhancement effects...
The development of wearable health systems has been the focus many researchers who aim to find solutions in healthcare. Additionally, large potential textiles integrate electronics, together with comfort and usability they provide, contributed smart garments this area. In field neurological disorders motor impairment, clinicians look for devices that may provide quantification movement symptoms. Neurological affect different motion abilities thus requiring needs quantification. With...
In this paper, the optical properties of a Si doped In0.53Ga0.47As/In0.52Ga0.24 Al0.24As superlattice (SL) are investigated by using photoluminescence (PL) technique in temperature range 9?300?K. The origins transitions observed spectra attributed through analysis transition behaviour with and excitation power. linewidths obtained at 9 300?K smaller than those previously reported literature, blueshift increasing has small magnitude, indicating excellent quality sample. experimental results...
Wearable devices have been showing promising results in a large range of applications: since industry, to entertainment and, particular, healthcare. In the scope movement disorders, wearable are being widely implemented for motor symptoms objective assessment. Currently, clinicians evaluate patients' resorting subjective scales and visual perception, such as Parkinson's Disease. The possibility make use quantify this disorder would bring an accurate follow-up on disease progression, leading...
Adaptive Deep Brain Stimulation has recently emerged to tackle conventional DBS limitations by measuring disease fluctuations and adapt stimulation parameter accordingly. In early 2020, Medtronic launched in the European Union first certified neurostimulator capable of simultaneously stimulate read signals from deep brain structures, PerceptTMPC. epilepsy, most common target structure is Anterior Nucleus Thalamus Local Field Potentials analysis requires prior synchronization data recorded...
The Anterior Nucleus of Thalamus (ANT) Deep Brain Stimulation (DBS) has long been touted as the most effective DBS-target for interrupting seizures in focal refractory epilepsy patients. ANT is primarily involved cognitive tasks but extensive reciprocal connections with motor-related regions, suggesting that it also motor-cognitive tasks. In this work, we aimed to assess involvement during voluntary upper limbs movements. For purpose, analyzed Local Field Potentials (LFPs) signals recorded a...
DBS surgery is considered for Parkinson's Disease patients when motor complications and consequent quality of life no longer acceptable on optimal medical therapy prescribed by neurologists. Within the operating room, electrode placement with best clinical outcome patient quantitatively assessed via wrist rigidity assessment. A subjective scale used, influenced neurologists' perception experience. Our research group has previously designed a novel, comfortable wireless system aiming to...
Cathodal transcranial direct current stimulation (c-tDCS) is a non-invasive option for treatment of refractory epilepsy. However, it still unknown whether this therapy has positive stabilizing effect on the vegetative function these patients. Heart Rate Variability (HRV) considered an efficient tool to monitor cardiac autonomic system, which been correlated with risk Sudden Unexpected Death in Epilepsy (SUDEP). In study, changes HRV are investigated after ctDCS six patients (34.50 ± 11.10...