Publications by authors named "C Camara"
Article Synopsis
- Identity verification is increasingly important for online services and security, with biometric methods like ECG signals standing out for their accuracy and resistance to falsification.
- The study introduces a new identity verification framework using ECG signals, which involves cleaning the data of noise and transforming it into images for deep learning analysis using techniques like the Wigner-Ville distribution and CNNs (GoogleNet architecture).
- The proposed model achieved high accuracy rates of 99.3% and 99.004% on benchmark datasets, demonstrating its effectiveness compared to other biometric methods.
The relationship between depression, particularly major depression (MD), as a risk factor for Alzheimer's disease (AD) is well established; however, its precise role remains contested. Findings from the fourth wave of the ZARADEMP longitudinal study provide further insights into the association between MD and AD risk. : This study aimed to examine the association between MD and incident AD, controlling for established risk factors.
View Article and Find Full Text PDFThis study aimed to explore the physiological dynamics of cognitive stress in patients with Major Depressive Disorder (MDD) and design a multiparametric model for objectively measuring severity of depression. Physiological signal recordings from 40 MDD patients and 40 healthy controls were collected in a baseline stage, in a stress-inducing stage using two cognitive tests, and in the recovery period. Several features were extracted from electrocardiography, photoplethysmography, electrodermal activity, respiration, and temperature.
View Article and Find Full Text PDFArticle Synopsis
- The study examined the link between mild behavioral impairment (MBI) and dementia risk in older adults, following 4,803 individuals over 4.5 years.
- It found that in cognitively normal participants, decreased motivation—an MBI domain—was linked to a significantly increased risk of all-cause dementia.
- The researchers suggest decreased motivation might indicate a higher dementia risk, but more studies are needed to explore the relationship between MBI and various types of dementia.
Article Synopsis
- Poststroke cognitive impairment is common, but the exact changes in cognitive function following a first stroke compared to pre-stroke levels are not fully understood.
- The study aimed to track cognitive performance over time in stroke survivors versus individuals without strokes, using data from 14 international cohorts of older adults.
- Results showed that incident stroke led to a significant immediate drop in overall cognitive skills and accelerated decline in cognitive abilities over time.