David Papo
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View article: A complex network perspective on brain disease
A complex network perspective on brain disease Open
If brain anatomy and dynamics have a complex network structure as it has become standard to posit, it is reasonable to assume that such a structure should play a key role not only in brain function but also in brain dysfunction. However, e…
View article: Biological detail and graph structure in network neuroscience
Biological detail and graph structure in network neuroscience Open
Representing the brain as a complex network typically involves approximations of both biological detail and network structure. Here, we discuss the sort of biological detail that may improve network models of brain activity and, conversely…
View article: A complex network perspective on brain disease
A complex network perspective on brain disease Open
If brain anatomy and dynamics have a genuine complex network structure as it has become standard to posit, it is also reasonable to assume that such a structure should play a key role not only in brain function but also in brain dysfunctio…
View article: Multivariate empirical mode decomposition reveals markers of Alzheimer’s Disease in the oscillatory response to transcranial magnetic stimulation
Multivariate empirical mode decomposition reveals markers of Alzheimer’s Disease in the oscillatory response to transcranial magnetic stimulation Open
Early detection of AD requires diagnostic tools that are both effective and accessible. Combining EEG with TMS shows great promise. Our results and method enhance TMS-EEG both as a practical diagnostic tool, and as a way to further our und…
View article: Multivariate empirical mode decomposition reveals markers of Alzheimer’s Disease in the oscillatory response to transcranial magnetic stimulation
Multivariate empirical mode decomposition reveals markers of Alzheimer’s Disease in the oscillatory response to transcranial magnetic stimulation Open
Objective To investigate EEG activity following transcranial magnetic stimulation (TMS) of the dorsolateral prefrontal cortex of Alzheimer’s Disease (AD) patients and control subjects using a data-driven characterization of brain oscillato…
View article: Predictability of temporal network dynamics in normal ageing and brain pathology
Predictability of temporal network dynamics in normal ageing and brain pathology Open
Spontaneous brain activity generically displays transient spatiotemporal coherent structures, which can selectively be affected in various neurological and psychiatric pathologies. Here we model the full brain's electroencephalographic act…
View article: Algorithmic Approaches for Assessing Multiscale Irreversibility in Time Series: Review and Comparison
Algorithmic Approaches for Assessing Multiscale Irreversibility in Time Series: Review and Comparison Open
Many physical and biological phenomena are characterized by time asymmetry, and are referred to as irreversible. Time-reversal symmetry breaking is in fact the hallmark of systems operating away from equilibrium and reflects the power diss…
View article: Algorithmic Approaches for Assessing Multiscale Irreversibility in Time Series: Review and Comparison
Algorithmic Approaches for Assessing Multiscale Irreversibility in Time Series: Review and Comparison Open
Many physical and biological phenomena are characterized by time asymmetry, and are referred to as irreversible. Time-reversal symmetry breaking is in fact the hallmark of systems operating away from equilibrium and reflects the power diss…
View article: Does the brain behave like a (complex) network? I. Dynamics
Does the brain behave like a (complex) network? I. Dynamics Open
View article: Editorial: Advances in brain dynamics in the healthy and psychiatric disorders
Editorial: Advances in brain dynamics in the healthy and psychiatric disorders Open
Psychiatry aims at diagnosing and treating psychological disorders and other mental health conditions affecting how subjects behave, think, or feel. Psychiatrists resort to a variety of diagnostic techniques, ranging from standard semiotic…
View article: Nanoscale Quantized Oscillations in Thin‐Film Growth Greatly Enhance Transconductance in Organic Transistors
Nanoscale Quantized Oscillations in Thin‐Film Growth Greatly Enhance Transconductance in Organic Transistors Open
A growth mode of pentacene thin films deposited by high vacuum sublimation where the morphology versus thickness h “rings” back and forth between rough 3D films with pyramid islands and smooth 2D films with ziqqurat islands is discovered. …
View article: Why Are There Six Degrees of Separation in a Social Network?
Why Are There Six Degrees of Separation in a Social Network? Open
A wealth of evidence shows that real-world networks are endowed with the small-world property, i.e.,
\nthat the maximal distance between any two of their nodes scales logarithmically rather than linearly with
\ntheir size. In addition, mos…
View article: The time scales of irreversibility in spontaneous brain activity are altered in obsessive compulsive disorder
The time scales of irreversibility in spontaneous brain activity are altered in obsessive compulsive disorder Open
We study how obsessive-compulsive disorder (OCD) affects the complexity and time-reversal symmetry-breaking (irreversibility) of the brain resting-state activity as measured by magnetoencephalography (MEG). Comparing MEG recordings from OC…
View article: Why are there six degrees of separation in a social network?
Why are there six degrees of separation in a social network? Open
A wealth of evidence shows that real world networks are endowed with the small-world property i.e., that the maximal distance between any two of their nodes scales logarithmically rather than linearly with their size. In addition, most soc…
View article: Telling functional networks apart using ranked network features stability
Telling functional networks apart using ranked network features stability Open
View article: Attaining the recesses of the cognitive space
Attaining the recesses of the cognitive space Open
View article: Algorithmic Approaches for Assessing Irreversibility in Time Series: Review and Comparison
Algorithmic Approaches for Assessing Irreversibility in Time Series: Review and Comparison Open
The assessment of time irreversibility, i.e., of the lack of invariance of the statistical properties of a system under the operation of time reversal, is a topic steadily gaining attention within the research community. Irreversible dynam…
View article: Principles and open questions in functional brain network reconstruction
Principles and open questions in functional brain network reconstruction Open
Graph theory is now becoming a standard tool in system‐level neuroscience. However, endowing observed brain anatomy and dynamics with a complex network representation involves often covert theoretical assumptions and methodological choices…
View article: A Fast Transform for Brain Connectivity Difference Evaluation
A Fast Transform for Brain Connectivity Difference Evaluation Open
View article: Travel restrictions during pandemics: A useful strategy?
Travel restrictions during pandemics: A useful strategy? Open
Though carrying considerable economic and societal costs, restricting individuals’ traveling freedom appears as a logical way to curb the spreading of an epidemic. However, whether, under what conditions, and to what extent travel restrict…
View article: A minimal model of hospital patients’ dynamics in COVID-19
A minimal model of hospital patients’ dynamics in COVID-19 Open
View article: Assessing functional propagation patterns in COVID-19
Assessing functional propagation patterns in COVID-19 Open
View article: Time Irreversibility of Resting-State Activity in the Healthy Brain and Pathology
Time Irreversibility of Resting-State Activity in the Healthy Brain and Pathology Open
Characterizing brain activity at rest is of paramount importance to our understanding both of general principles of brain functioning and of the way brain dynamics is affected in the presence of neurological or psychiatric pathologies. We …
View article: Projective mechanisms subtending real world phenomena wipe away cause effect relationships
Projective mechanisms subtending real world phenomena wipe away cause effect relationships Open
View article: Time irreversibility of resting brain activity in the healthy brain and pathology
Time irreversibility of resting brain activity in the healthy brain and pathology Open
Characterising brain activity at rest is of paramount importance to our understanding both of general principles of brain functioning and of the way brain dynamics is affected in the presence of neurological or psychiatric pathologies. We …
View article: Gauging Functional Brain Activity: From Distinguishability to Accessibility
Gauging Functional Brain Activity: From Distinguishability to Accessibility Open
Standard neuroimaging techniques provide non-invasive access not only to human brain anatomy but also to its physiology. The activity recorded with these techniques is generally called functional imaging, but what is observed per…
View article: Brain synchronizability, a false friend
Brain synchronizability, a false friend Open
View article: Gauging functional brain activity: from distinguishability to\n accessibility
Gauging functional brain activity: from distinguishability to\n accessibility Open
Standard neuroimaging techniques provide non-invasive access not only to\nhuman brain anatomy but also to its physiology. The activity recorded with\nthese techniques is generally called functional imaging, but what is observed\nper se is …
View article: Gauging functional brain activity: from distinguishability to accessibility
Gauging functional brain activity: from distinguishability to accessibility Open
Standard neuroimaging techniques provide non-invasive access not only to human brain anatomy but also to its physiology. The activity recorded with these techniques is generally called functional imaging, but what is observed per se is an …
View article: Neurofeedback: Principles, appraisal, and outstanding issues
Neurofeedback: Principles, appraisal, and outstanding issues Open
Neurofeedback is a form of brain training in which subjects are fed back information about some measure of their brain activity which they are instructed to modify in a way thought to be functionally advantageous. Over the last 20 years, n…