L
Liana C. L. Portugal
Researcher at Federal Fluminense University
Publications - 25
Citations - 928
Liana C. L. Portugal is an academic researcher from Federal Fluminense University. The author has contributed to research in topics: Poison control & Pattern recognition (psychology). The author has an hindex of 12, co-authored 22 publications receiving 525 citations. Previous affiliations of Liana C. L. Portugal include University College London.
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Journal ArticleDOI
COVID-19 pandemic impact on children and adolescents' mental health: Biological, environmental, and social factors.
Camila Saggioro de Figueiredo,Poliana Capucho Sandre,Liana C. L. Portugal,Thalita Mázala-de-Oliveira,Luana da Silva Chagas,Ícaro Raony,Elenn Soares Ferreira,Elizabeth Giestal-de-Araujo,Aline Araujo dos Santos,Priscilla Oliveira Silva Bomfim +9 more
TL;DR: The aim is to bring up a discussion under different aspects and to alert public health and government agents about the need for surveillance and care of individuals affected by the SARS-CoV-2 pandemic.
Proceedings ArticleDOI
Sparse Network-Based Models for Patient Classification Using fMRI
TL;DR: A sparse network-based discriminative modelling framework, based on Gaussian graphical models and L1-norm regularised linear Support Vector Machines (SVM), is built, which provides easier pattern interpretation in terms of underlying network changes between groups.
Journal ArticleDOI
Is tonic immobility the core sign among conventional peritraumatic signs and symptoms listed for PTSD
Vanessa Rocha-Rego,Adriana Fiszman,Liana C. L. Portugal,Mirtes G. Pereira,Leticia de Oliveira,Mauro V. Mendlowicz,Carla Marques-Portella,William Berger,Evandro Silva Freire Coutinho,Jair de Jesus Mari,Ivan Figueira,Eliane Volchan +11 more
TL;DR: This study provides good reason to conduct more research on tonic immobility in PTSD with other samples and with different time frames in an attempt to replicate these stimulating results.
Journal ArticleDOI
EEG correlates of the severity of posttraumatic stress symptoms: A systematic review of the dimensional PTSD literature.
Isabela Lobo,Liana C. L. Portugal,Ivan Figueira,Eliane Volchan,Isabel A. David,Mirtes G. Pereira,Leticia de Oliveira +6 more
TL;DR: EEG provides promising candidates to act as biomarkers, although further studies are required to confirm the findings, and EEG, in addition to being cheaper and easier to implement than other central techniques, has the potential to reveal biomarkers of PTSS severity.
Journal ArticleDOI
Embedding anatomical or functional knowledge in whole-brain multiple kernel learning models
Jessica Schrouff,Jőo M. Monteiro,Liana C. L. Portugal,Liana C. L. Portugal,Maria Jőo Rosa,Christophe Phillips,Janaina Mourao-Miranda +6 more
TL;DR: This work uses a sparse version of Multiple Kernel Learning (MKL) to simultaneously learn the contribution of each brain region, previously defined by an atlas, to the decision function and shows how this can lead to improved overall generalisation performance.