Publications


Journal Articles

2024 | Human Brain Mapping

Distinct oscillatory patterns differentiate between segregation and integration processes in perceptual grouping

G. N. Costa, M. Schaum, J. V. Duarte, R. Martins, I. C. Duarte, J. Castelhano, M. Wibral, M. Castelo-Branco

[10.1002/hbm.26779] [full-text]

2023 | Journal of Clinical Medicine

Brain Hemispheric Asymmetry in Schizophrenia and Bipolar Disorder

D. Pinto, R. Martins, A. Macedo, M. Castelo-Branco, J. V. Duarte, N. Madeira

[10.3390/jcm12103421] [full-text]

2023 | Brain Communications

Textural properties of microglial activation in Alzheimer’s disease as measured by (R)-[11C]PK11195 PET

M. L. Pais, L. Jorge, R. Martins, N. Canário, A. C. Xavier, R. Bernardes, A. Abrunhosa, I. Santana, M. Castelo-Branco

[10.1093/braincomms/fcad148] [full-text]

2023 | Hippocampus

Associations between cortical β-amyloid burden, fornix microstructure and cognitive processing of faces, places, bodies and other visual objects in early Alzheimer's disease

J. Bourbon-Teles, L. Jorge, N. Canário, R. Martins, I. Santana, M. Castelo-Branco

[10.1002/hipo.23493] [full-text]

2022 | Communications Biology

Dual PET-fMRI reveals a link between neuroinflammation, amyloid binding and compensatory task-related brain activity in Alzheimer’s disease

N. Canário*, L. Jorge*, R. Martins, I. Santana, M. Castelo-Branco

[10.1038/s42003-022-03761-7] [full-text]

2021 | NeuroImage Clinical

A Fundamental Distinction in Early Neural Processing of Implicit Social Interpretation in Schizophrenia and Bipolar Disorder

N. Madeira*, R. Martins*, J. V. Duarte, G. N. Costa, A. Macedo, M. Castelo-Branco

[10.1016/j.nicl.2021.102836] [full-text]

2021 | Journal of Neural Engineering

Automatic classification of idiopathic Parkinson's disease and atypical parkinsonian syndromes combining [11C]raclopride PET uptake and MRI grey matter morphometry

R. Martins, F. Oliveira, F. Moreira, A. P. Moreira, A. Abrunhosa, C. Januário, M. Castelo-Branco

[10.1088/1741-2552/abf772] [full-text]

2021 | Human Brain Mapping

The dual nature of the BOLD signal - Responses in visual area hMT+ reflect both input properties and perceptual decision

T. Sousa, J. V. Duarte, G. N. Costa, V. Kemper, R. Martins, R. Goebel, M. Castelo-Branco

[10.1002/hbm.25339] [full-text]

2021 | Journal of Alzheimer's Disease

Investigating the Spatial Associations Between Amyloid-β Deposition, Grey Matter Volume, and Neuroinflammation in Alzheimer’s Disease

L. Jorge, R. Martins, N. Canário, C. Xavier, A. Abrunhosa, I. Santana, M. Castelo-Branco

[10.3233/JAD-200840] [full-text]

2020 | Neural Plasticity

The Retinal Inner Plexiform Synaptic Layer Mirrors Grey Matter Thickness of Primary Visual Cortex with Increased Amyloid β Load in Early Alzheimer’s Disease

L. Jorge, N. Canário, R. Martins, B. Santiago, I. Santana, H. Quental, F. Ambrósio, R. Bernardes, M. Castelo-Branco

[10.1155/2020/8826087] [full-text]

2020 | NeuroImage

Identification of competing neural mechanisms underlying positive and negative perceptual hysteresis in the human visual system

A. S. Campos*, T. Sousa*, J.V. Duarte, G.N. Costa, R. Martins, M. Castelo-Branco

[10.1016/j.neuroimage.2020.117153] [full-text]

2020 | NeuroImage Clinical

Morphometry and gyrification in bipolar disorder and schizophrenia - a comparative MRI study

J.V. Duarte*, N. Madeira*, R. Martins, G.N. Costa, A. Macedo, M. Castelo-Branco

[10.1016/j.nicl.2020.102220] [full-text]

2019 | Scientific Reports

Tracking perceptual decision mechanisms through changes in interhemispheric functional connectivity in human visual cortex

T. Sousa, J. V. Duarte, G. N. Costa, V. Kemper, R. Martins, R. Goebel, M. Castelo-Branco

[10.1038/s41598-018-37822-x] [full-text]

2018 | NeuroImage

Evidence for distinct levels of neural adaptation to both coherent and incoherently moving visual surfaces in visual area hMT+

T. Sousa*, A. S. Campos*, J.V. Duarte, G.N. Costa, R. Martins, M. Castelo-Branco

[10.1016/j.neuroimage.2018.06.075] [full-text]

2017 | Human Brain Mapping

Pivotal role of hMT+ in long‐range disambiguation of interhemispheric bistable surface motion

J.V. Duarte, G.N. Costa, R. Martins, M. Castelo-Branco

[10.1002/hbm.23701] [full-text]

2017 | Journal of Cognitive Neuroscience

Interhemispheric binding of ambiguous visual motion is associated with changes in beta oscillatory activity but not with gamma range synchrony

G.N. Costa, J.V. Duarte, R. Martins, M. Wibral, M. Castelo-Branco

[10.1162/jocn_a_01158] [full-text]

2017 | Neurocomputing

Integration of touch attention mechanisms to improve the robotic haptic exploration of surfaces

R. Martins, J. F. Ferreira, M. Castelo-Branco, J. Dias

[10.1016/j.neucom.2016.10.027] [full-text]

2014 | Robotics and Autonomous Systems

Extracting Data from Human Manipulation of Objects Towards Improving Autonomous Robotic Grasping

Diego R. Faria, Ricardo Martins, Jorge Lobo, Jorge Dias

[10.1016/j.robot.2011.07.020] [full-text]

Book Chapters

2021 | Progress in Brain Research

Effects of anodal multichannel transcranial direct current stimulation (tDCS) on social-cognitive performance in healthy subjects - A randomized sham-controlled crossover pilot study

H. C. Pereira, D. Sousa, M. Simões, R. Martins, C. Amaral, V. Lopes, J. Crisóstomo, M. Castelo-Branco

[10.1016/bs.pbr.2021.04.004] [full-text]

2012 | IFAC Proceedings Volumes (10th IFAC Symposium on Robot Control)

A Probabilistic Framework to Detect Suitable Grasping Regions on Objects

D. R. Faria, R. Martins, J. Lobo, J. Dias

[10.3182/20120905-3-HR-2030.00090] [full-text]

2011 | IFIP Advances in Information and Communication Technology (DoCEIS 2011)

Manipulative Tasks Identification by Learning and Generalizing Hand Motions

Diego Faria, Ricardo Martins, Jorge Lobo, Jorge Dias

[10.1007/978-3-642-19170-1_19] [full-text]

2010 | IFIP Advances in Information and Communication Technology (DoCEIS 2010)

Grasp Exploration for 3D Object Shape Representation using Probabilistic Map

Diego R. Faria, Ricardo Martins, Jorge Dias

[10.1007/978-3-642-11628-5_23] [full-text]

2008 | Lecture Notes in Computer Science (ICANN 2008)

Towards Personalized Neural Networks for Epileptic Seizure Prediction

António Dourado, Ricardo Martins, João Duarte, Bruno Direito

[10.1007/978-3-540-87559-8_50] [full-text]

Conference Papers

2014 | IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2014)

Touch attention Bayesian models for robotic active haptic exploration of heterogeneous surfaces

R. Martins, J. F. Ferreira, J. Dias

[10.1109/IROS.2014.6942711] [full-text]

2012 | ACM/IEEE International Conference on Human Robot Interaction (HRI2012)

Representation framework of perceived object softness characteristics for active robotic hand exploration

Ricardo Martins, Diego R. Faria, Jorge Dias

[10.5281/zenodo.4553427] [full-text]

2012 | International Workshop on Bayesian Inference and Maximum Entropy Methods in Science and Engineering (MaxEnt 2012)

Touch attention Bayesian models for object feature extraction in robotic blind manipulation

R. Martins, J. F. Ferreira, J. Dias

[] [full-text]

2010 | IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2010)

Probabilistic Representation of 3D Object Shape by In-Hand Exploration

Diego R. Faria, Ricardo Martins, Jorge Lobo, Jorg

[10.1109/IROS.2010.5649286] [full-text]

2010 | IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2010 - Workshop on Grasping Planning and Task Learning by Imitation)

Symbolic Level Generalization of In-hand Manipulation Tasks from Human Demonstrations using Tactile Data Information

Ricardo Martins, Diego R. Faria, Jorge Dias

[10.5281/zenodo.4553413] [full-text]

2010 | IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2010 - Workshop on Grasping Planning and Task Learning by Imitation)

Learning Motion Patterns from Multiple Observations along the Actions Phases of Manipulative Tasks

Diego R. Faria, Ricardo Martins, Jorge Dia

[10.5281/zenodo.4553421] [full-text]

2009 | Robotics Science and Systems (RSS 2009, Workshop Understanding the Human Hand for Advancing Robotic Manipulation)

Human reach-to-grasp generalization strategies - a Bayesian approach

Diego R. Faria, Ricardo Martins, Jorge Dias

[10.5281/zenodo.4553390] [full-text]

2008 | Epilepsia (8th European Congress on Epileptology)

Computational Intelligence Algorithms for Seizure Prediction

Bruno Direito, Ricardo Martins, Rui Costa, António Dourado, Francisco Sales, Marco Vieira

[] [full-text]

Conference Abstracts

November 22 - November 25, 2023 | XVII Portuguese National Congress of Psychiatry

Teoria da Mente implícita na Esquizofrenia e Doença Bipolar - padrões cerebrais distintivos de conetividade funcional

R. Martins, N. Madeira, J. V. Duarte, A. Macedo, M. Castelo-Branco

[] [full-text]

October 24 - October 27, 2023 | CRSy23 - Champalimaud Research Symposium 2023

Distinct functional connectivity patterns in dopaminergic and limbic pathways underlying task-based implicit Theory of Mind in Schizophrenia and Bipolar Disorder

R. Martins, J. V. Duarte, N. Madeira, A. Macedo, M. Castelo-Branco

[] [full-text]

October 24 - October 27, 2023 | CRSy23 - Champalimaud Research Symposium 2023

Distinct oscillatory patterns differentiate between segregation and integration processes in perceptual grouping

G. N. Costa, M. Schaum, J. V. Duarte, R. Martins, J. Castelhano, M. Wibral, M. Castelo-Branco

[] [full-text]

May 3 - May 6, 2023 | INSAR meeting 2023 - International Society for Autism Research

Synaptic density marker, SV2A, is reduced in autistic adults

C. Mehra, E. Onwordi; B. Kowalewska, T. Whitehurst, E. Shatalina, G. Griffioen, R. Martins, M. Petrinovic, S. Mouga, A. Abrunhosa, A. Rodrigues, I. Kadiu, J. Borg, M. Castelo-Branco, S. Natesan, J. Muircheartaigh, O. Howes, D. Murphy

[] [full-text]

May 3 - May 5, 2023 | FRM 2023 - Federation of European Neuroscience Societies, Regional Meeting

A structural MRI study of cortical complexity features of major depression, schizophrenia, and bipolar disorder

J. V. Duarte, R. Martins, N. Madeira, K. Young, A. Macedo, M. Castelo-Branco

[] [full-text]

December 16, 2022 | CIBIT meeting 2022 - Coimbra Institute for Biomedical Imaging and Translational Research

Nervous system plasticity in stroke - functional magnetic resonance and PET

M. S. Ferreira, O. C. d'Almeida, H. Quental, R. Martins, J. Lemos, A. Jorge, M. Castelo-Branco

[] [full-text]

April 6 - April 9, 2022 | 13th Symposium of the BIAL Foundation “Behind and Beyond the Brain”

The role of motion adaptation in bottom-up mechanisms of perceptual decision-making

M. Castelo-Branco, T. Sousa, J. V. Duarte, R. Martins, G. Costa

[] [full-text]

October 20 - October 23, 2021 | European Journal of Nuclear Medicine and Molecular Imaging - Conference Abstract - Annual Congress of the European Association of Nuclear Medicine (EANM2021), online

Texture Quantification Parameters for Alzheimer's disease diagnosis measured by 11C- (R)- PK11195 PET images

M. Lapo Pais, L. Jorge, R. Martins, N. Canário, C. Xavier, A. Abrunhosa, I. Santana, R. Bernardes, M. Castelo-Branco

[10.1007/s00259-021-05547-1] [full-text]

May 30 - June 1, 2019 | Frontiers in Cellular Neuroscience - Conference Abstract - XVI Meeting of the Portuguese Society for Neuroscience (SPN2019), Lisbon, Portugal

Studying the neuronal mechanisms underlying bistable perception - the role of adaptation, persistence, and inhibition on perceptual decision

T. Sousa, A. S. Campos, J. V. Duarte, G. N. Costa, R. Martins, M. Castelo-Branco

[10.3389/conf.fncel.2019.01.00045] [full-text]

May 30 - June 1, 2019 | Frontiers in Cellular Neuroscience - Conference Abstract - XVI Meeting of the Portuguese Society for Neuroscience (SPN2019), Lisbon, Portugal

Investigating whole-brain MRI markers in neuropsychiatric disorders – separating disease duration from medication effects in schizophrenia and bipolar disorder

J.V. Duarte, N. Madeira, R. Martins, G.N. Costa, A. Macedo, M. Castelo-Branco

[10.3389/conf.fncel.2019.01.00048] [full-text]

July 10-13, 2019 | Federation of European Neuroscience Societies Regional meeting (FRM 2019), Belgrade, Serbia

Distinct roles of beta and gamma oscillations during integration of ambiguous motion

G.N. Costa, Schaum, R. Martins, J.V. Duarte, J. Castelhano, M. Wibral, M. Castelo-Branco

[] [full-text]

July 10-13, 2019 | Federation of European Neuroscience Societies Regional meeting (FRM 2019), Belgrade, Serbia

Investigating whole-brain MRI markers in neuropsychiatric disorders – emerging dimensions in morphometric space

J.V. Duarte, N. Madeira, R. Martins, G.N. Costa, A. Macedo, M. Castelo-Branco

[] [full-text]

June 17-21, 2018 | 24th Annual Meeting of the Organization for Human Brain Mapping (OHBM 2018), Singapore

Evidence for asymmetric perceptual adaptation to coherent and incoherent moving plaids

T. Sousa, A. S. Campos, J. V. Duarte, G. N. Costa, R. Martins, M. Castelo-Branco

[] [full-text]

July 7-11, 2018 | 11th FENS Forum of Neuroscience (FENS 2018), Berlin, Germany

Unraveling the neural correlates of perceptual hysteresis - the effects of perceptual history on the visual perception of an ambiguous stimulus

A. S. Campos, T. Sousa, J.V. Duarte, G.N. Costa, R. Martins, M. Castelo-Branco

[] [full-text]

July 12-13, 2018 | Salzburg Mind-Brain Annual Meeting (SAMBA 2018), Salzburg, Austria

Unraveling the neural correlates of perceptual hysteresis - the effects of perceptual history on the visual perception of an ambiguous stimulus

A. S. Campos, T. Sousa, J.V. Duarte, G.N. Costa, R. Martins, M. Castelo-Branco

[] [full-text]

July 12-13, 2018 | Salzburg Mind-Brain Annual Meeting (SAMBA 2018), Salzburg, Austria

Evidence for distinct levels of neural adaptation to both coherent and incoherently moving visual surfaces in visual area hMT+

T. Sousa, A. S. Campos, J.V. Duarte, G.N. Costa, R. Martins, M. Castelo-Branco

[] [full-text]

August 5-8, 2017 | 13th International Conference for Cognitive Neuroscience, Amsterdam, Netherland

Long-range interhemispheric binding of bistable surface motion reflects bottom-up processes generated within hMT+

J. V. Duarte, G. N. Costa, R. Martins, M. Castelo-Branco

[] [full-text]

August 5-8, 2017 | 13th International Conference for Cognitive Neuroscience, Amsterdam, Netherland

Beta oscillations reflect perceptual experience under ambiguous stimulation but not in the absence of conflict

G. N. Costa, J. V. Duarte, R. Martins, M. Castelo-Branco

[] [full-text]

August 5-8, 2017 | 13th International Conference for Cognitive Neuroscience, Amsterdam, Netherland

The Perceptual Integration of Visual Motion Revealed by hMT+ Interhemispheric Connectivity - a 7 Tesla study

T. Sousa, V. Kemper, G. N. Costa, J. V. Duarte, R. Martins, R. Goebel, M. Castelo-Branco

[] [full-text]

July 6-7, 2017 | 7th Iberian Congress on Perception, Coimbra, Portugal

Maintenance of perceptual stability of interhemispheric surface motion is associated with bottom-up influences generated within hMT+

João V. Duarte, Gabriel N. Costa, Ricardo Martins, Miguel Castelo-Branco

[] [full-text]

July 6-7, 2017 | 7th Iberian Congress on Perception, Coimbra, Portugal

High-resolution 7T fMRI data on the perceptual long-range segregation vs. integration of bistable moving stimuli

T. Sousa, J. V. Duarte, G. N. Costa, V. Kemper, R. Martins, R. Goebel, M. Castelo-Branco

[] [full-text]

July 6-7, 2017 | 7th Iberian Congress on Perception, Coimbra, Portugal

Study of motion adaptation and its role in deciding between competing surface representations

A. S. Campos, T. Sousa, J. V. Duarte, G. N. Costa, R. Martins, M. Castelo-Branco

[] [full-text]

July 6-7, 2017 | 7th Iberian Congress on Perception, Coimbra, Portugal

Beta oscillations during motion integration and segmentation - evidence of binding or perceptual bias?

Gabriel N. Costa, João V. Duarte, Ricardo Martins, Michael Wibral, Miguel Castelo-Branco

[] [full-text]

June 26-30, 2016 | 22nd Annual Meeting of the Organization for Human Brain Mapping (OHBM 2016), Geneva, Switzerland

Binding of ambiguous visual stimuli is associated with changes in beta power but not with synchrony

G. N. Costa, J. V. Duarte, R. Martins, M. Wibral, M. Castelo-Branco

[] [full-text]

June 26-30, 2016 | 22nd Annual Meeting of the Organization for Human Brain Mapping (OHBM 2016), Geneva, Switzerland

Long-range perceptual integration of visual motion revealed at high resolution 7T fMRI

T. Sousa, V. Kemper, G. Costa, J. V. Duarte, R. Martins, R. Goebel, M. Castelo-Branco

[] [full-text]

December 3-4, 2015 | V IBILI Meeting, Coimbra, Portugal

Perceptual interpretation of visual motion revealed at high resolution 7T fMRI - differential modulation of neural population activity

T. Sousa, G.N. Costa, J. V. Duarte, R. Martins, V. Kemper, R. Goebel, M. Castelo-Branco

[] [full-text]

September 10-12, 2015 | Annual Conference on Clinical Neurophysiology and Neuroimaging, Munich, Germany

Increased synchrony correlates with visual binding - a study on visual integration on healthy subjects and schizophrenic patients

G.N. Costa, J. V. Duarte, R. Martins, N. Madeira, M. Castelo-Branco

[] [full-text]

December 11-12, 2014 | IV IBILI meeting, Coimbra, Portugal

Perceptual motion integration correlates with long range neural synchrony - a study on the temporal binding hypothesis

G.N. Costa, J. V. Duarte, M.Intaite, R. Martins, M. Castelo-Branco

[] [full-text]

August 30, 2013 | 2nd Workshop on Recognition and Action for Scene Understanding (REACTS) 2013, York, UK

Touch attention Bayesian models for robotic active haptic exploration

Ricardo Martins, J. F. Ferreira, J. Dias

[] [full-text]

Thesis and Dissertations

2017 | PhD thesis, University of Coimbra

Development of techniques for haptic exploration and recognition of objects - a contribution to autonomous robotic hands

R. Martins

[] [full-text]

2008 | MSc Thesis, University of Coimbra, Internship at Blueworks Lda

BW-Eye - Ophthalmologic decision support system based on clinical workflow and data mining techniques-image registration algorithm

R. Martins

[] [full-text]