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10. Individual Brain Charting dataset extension, second release of high-resolution fMRI data for cognitive mapping

Author

Pinho, Ana Luísa, Amadon, Alexis, Gauthier, Baptiste, Clairis, Nicolas, Knops, André, Genon, Sarah, Dohmatob, Elvis, Torre, Juan Jesús, Ginisty, Chantal, Becuwe-Desmidt, Séverine, Roger, Séverine, Lecomte, Yann, Berland, Valérie, Laurier, Laurence, Joly-Testault, Véronique, Médiouni-Cloarec, Gaëlle, Doublé, Christine, Martins, Bernadette, Salmon, Eric, Piazza, Manuela, Melcher, David, Pessiglione, Mathias, van Wassenhove, Virginie, Eger, Evelyn, Varoquaux, Gaël, Dehaene, Stanislas, Hertz-Pannier, Lucie, and Thirion, Bertrand

Published
2020
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11. Changes in spatial self-consciousness elicit grid cell-like representation in the entorhinal cortex.

Author

Hyuk-June Moon, Albert, Louis, De Falco, Emanuela, Tasu, Corentin, Gauthier, Baptiste, Hyeong-Dong Park, and Blanke, Olaf

Subjects
ENTORHINAL cortex, SELF-consciousness (Awareness), GRID cells, FUNCTIONAL magnetic resonance imaging, FUNCTIONAL analysis
Abstract

Grid cells in the entorhinal cortex (EC) encode an individual's location in space, integrating both environmental and multisensory bodily cues. Notably, body-derived signals are also primary signals for the sense of self. While studies have demonstrated that continuous application of visuo-tactile bodily stimuli can induce perceptual shifts in self-location, it remains unexplored whether these illusory changes suffice to trigger grid cell-like representation (GCLR) within the EC, and how this compares to GCLR during conventional virtual navigation. To address this, we systematically induced illusory drifts in self-location toward controlled directions using visuo-tactile bodily stimulation, while maintaining the subjects' visual viewpoint fixed (absent conventional virtual navigation). Subsequently, we evaluated the corresponding GCLR in the EC through functional MRI analysis. Our results reveal that illusory changes in perceived self-location (independent of changes in environmental navigation cues) can indeed evoke entorhinal GCLR, correlating in strength with the magnitude of perceived self-location, and characterized by similar grid orientation as during conventional virtual navigation in the same virtual room. These data demonstrate that the same grid-like representation is recruited when navigating based on environmental, mainly visual cues, or when experiencing illusory forward drifts in self-location, driven by perceptual multisensory bodily cues. [ABSTRACT FROM AUTHOR]

Published
2024
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19. Atlases of cognition with large-scale brain mapping

Author

Varoquaux, Gaël, Schwartz, Yannick, Poldrack, Russell, Gauthier, Baptiste, Bzdok, Danilo, Poline, Jean-Baptiste, Thirion, Bertrand, Modelling brain structure, function and variability based on high-field MRI data (PARIETAL), Service NEUROSPIN (NEUROSPIN), Université Paris-Saclay-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Inria Saclay - Ile de France, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria), Stanford University, Neuroimagerie cognitive - Psychologie cognitive expérimentale (UNICOG-U992), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris-Saclay, Inria Saclay - Ile de France, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Service NEUROSPIN (NEUROSPIN), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Saclay (COmUE)

Subjects
[INFO.INFO-IM]Computer Science [cs]/Medical Imaging
Abstract

International audience; To map the neural substrate of mental function, cognitive neuroimaging relies on controlled psychological manipulations that engage brain systems associated with specific cognitive processes. In order to build comprehensive atlases of cognitive function in the brain, it must assemble maps for many different cognitive processes, which often evoke overlapping patterns of activation. Such data aggregation faces contrasting goals: on the one hand finding correspondences across vastly different cognitive experiments, while on the other hand precisely describing the function of any given brain region. Here we introduce a new analysis framework that tackles these difficulties and thereby enables the generation of brain atlases for cognitive function. The approach leverages ontologies of cognitive concepts and multi-label brain decoding to map the neural substrate of these concepts. We demonstrate the approach by building an atlas of functional brain organization based on 30 diverse functional neuroimaging studies, totaling 196 different experimental conditions. Unlike conventional brain mapping, this functional atlas supports robust reverse inference: predicting the mental processes from brain activity in the regions delineated by the atlas. To establish that this reverse inference is indeed governed by the corresponding concepts, and not idiosyncrasies of experimental designs, we show that it can accurately decode the cognitive concepts recruited in new tasks. These results demonstrate that aggregating independent task-fMRI studies can provide a more precise global atlas of selective associations between brain and cognition.

Published
2018

28. Feasibility of Structural Health Monitoring in a Composite Plate using Omnidirectional SH0 Transduction.

Author

Tremblay, Nicolas, Gauthier, Baptiste, and Belanger, Pierre

Subjects
*STRUCTURAL health monitoring, *COMPOSITE plates, *TRANSDUCERS, *GENETIC transduction, *ULTRASONIC waves, *MODE shapes
Abstract

Structural health monitoring (SHM) is attracting interest from the scientific community to ensure the integrity of safety-critical components by continuously monitoring the host structure. Ultrasonic guided waves are a prominent candidate for SHM because of their ability to propagate over long distances with minimal attenuation. The fundamental shear horizontal (SH0) ultrasonic guided wave mode is very promising for SHM because of its non-dispersive nature and its through thickness mode shape. Moreover, SH waves do not convert to other guided wave modes when interacting with a boundary or defect parallel to the direction of polarization. In SHM of large panels omnidirectional transduction is preferred so as to maximize the inspection coverage. This paper aims to assess the capability of omnidirectional SH0 SHM for the detection and imaging of several flaws in a CFRP composite plate with properties relevant to the aerospace industry. Experiments were conducted using three omnidirectional piezoceramic transducers with a center frequency of 150 kHz. The results show that the non-dispersive nature of SH0 associated with broadband omnidirectional transducers lead to high-resolution images when compared with other fundamental guided wave mode SHM methods. [ABSTRACT FROM AUTHOR]

Published
2019
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31. Comparison of a piezoceramic transducer and an EMAT for the omnidirectional transduction of SH0.

Author

Gauthier, Baptiste, Thon, Aurelien, Belanger, Pierre, Chimenti, Dale E., and Bond, Leonard J.

Subjects
*SHEAR waves, *NONDESTRUCTIVE testing, *STRUCTURAL health monitoring, *MEASUREMENT of ultrasonic waves, *PIEZOELECTRIC transducers, *PIEZOELECTRIC ceramics
Abstract

The fundamental shear horizontal ultrasonic guided wave mode has unique properties for non-destructive testing as well as structural health monitoring applications. It is the only non-dispersive guided wave mode and it is not attenuated by fluid loading. Moreover, shear horizontal waves do not convert to other guided wave modes when interacting with a boundary or defect parallel to the direction of polarization. In many applications, omnidirectional transduction is preferred so as to maximize the inspection coverage. The omnidirectional transduction of the fundamental shear horizontal ultrasonic guided wave mode is, however, challenging because a torsional surface stress is required. This paper compares the performances of two concepts recently proposed in the literature: 1- a piezoceramic transducer and 2- an electromagnetic-acoustic transducer. The piezoceramic transducer uses 6 trapezoidal shear piezoelectric elements arranged on a discretized circle. The electromagnetic acoustic transducer concept consists of a pair of ring-type permanent magnets and a coil wrapped in the radial direction. In this paper, both transducers were designed to have a 150 kHz centre frequency. Experimental results were performed on a thin aluminum plate using both transducers. A 3D laser Doppler vibrometer was used to verify the omnidirectional nature, the mode selectivity and the frequency response of the transducers. The EMAT has undeniable advantages in terms of omnidirectionality and mode selectivity. However it has a larger footprint than the piezoceramic concept and is only suitable for the inspection of metallic structures. [ABSTRACT FROM AUTHOR]

Published
2018
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32. Comparison of a piezoceramic transducer and an EMAT for the omnidirectional transduction of SH0.

Author

Gauthier, Baptiste, Thon, Aurelien, Belanger, Pierre, Chimenti, Dale E., and Bond, Leonard J.

Subjects
SHEAR waves, NONDESTRUCTIVE testing, STRUCTURAL health monitoring, MEASUREMENT of ultrasonic waves, PIEZOELECTRIC transducers, PIEZOELECTRIC ceramics
Abstract

The fundamental shear horizontal ultrasonic guided wave mode has unique properties for non-destructive testing as well as structural health monitoring applications. It is the only non-dispersive guided wave mode and it is not attenuated by fluid loading. Moreover, shear horizontal waves do not convert to other guided wave modes when interacting with a boundary or defect parallel to the direction of polarization. In many applications, omnidirectional transduction is preferred so as to maximize the inspection coverage. The omnidirectional transduction of the fundamental shear horizontal ultrasonic guided wave mode is, however, challenging because a torsional surface stress is required. This paper compares the performances of two concepts recently proposed in the literature: 1- a piezoceramic transducer and 2- an electromagnetic-acoustic transducer. The piezoceramic transducer uses 6 trapezoidal shear piezoelectric elements arranged on a discretized circle. The electromagnetic acoustic transducer concept consists of a pair of ring-type permanent magnets and a coil wrapped in the radial direction. In this paper, both transducers were designed to have a 150 kHz centre frequency. Experimental results were performed on a thin aluminum plate using both transducers. A 3D laser Doppler vibrometer was used to verify the omnidirectional nature, the mode selectivity and the frequency response of the transducers. The EMAT has undeniable advantages in terms of omnidirectionality and mode selectivity. However it has a larger footprint than the piezoceramic concept and is only suitable for the inspection of metallic structures. [ABSTRACT FROM AUTHOR]

Published
2018
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36. Noninvasive modulation of the hippocampal-entorhinal complex during spatial navigation in humans.

Author

Beanato, Elena, Hyuk-June Moon, Windel, Fabienne, Vassiliadis, Pierre, Wessel, Maximillian J., Popa, Traian, Pauline, Menoud, Neufeld, Esra, De Falco, Emanuela, Gauthier, Baptiste, Steiner, Melanie, Blanke, Olaf, and Hummel, Friedhelm C.

Subjects
*FUNCTIONAL magnetic resonance imaging, *BRAIN injuries, *ELECTRIC interference, *ELECTRIC stimulation, *SPATIAL behavior
Abstract

Because of the depth of the hippocampal-entorhinal complex (HC-EC) in the brain, understanding of its role in spatial navigation via neuromodulation was limited in humans. Here, we aimed to better elucidate this relationship in healthy volunteers, using transcranial temporal interference electric stimulation (tTIS), a noninvasive technique allowing to selectively neuromodulate deep brain structures. We applied tTIS to the right HC-EC in either continuous or intermittent theta-burst stimulation patterns (cTBS or iTBS), compared to a control condition, during a virtual reality-based spatial navigation task and concomitant functional magnetic resonance imaging. iTBS improved spatial navigation performance, correlated with hippocampal activity modulation, and decreased grid cell-like activity in EC. Collectively, these data provide the evidence that human HC-EC activity can be directly and noninvasively modulated leading to changes of spatial navigation behavior. These findings suggest promising perspectives for patients suffering from cognitive impairment such as following traumatic brain injury or dementia. [ABSTRACT FROM AUTHOR]

Published
2024
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37. Individual Brain Charting dataset extension, second release of high-resolution fMRI data for cognitive mapping

Author

Pinho, Ana Luísa, Amadon, Alexis, Gauthier, Baptiste, Clairis, Nicolas, Knops, André, Genon, Sarah, Dohmatob, Elvis, Torre, Juan Jesús, Ginisty, Chantal, Becuwe-Desmidt, Séverine, Roger, Séverine, Lecomte, Yann, Berland, Valérie, Laurier, Laurence, Joly-Testault, Véronique, Médiouni-Cloarec, Gaëlle, Doublé, Christine, Martins, Bernadette, Salmon, Eric, Piazza, Manuela, Melcher, David, Pessiglione, Mathias, van Wassenhove, Virginie, Eger, Evelyn, Varoquaux, Gaël, Dehaene, Stanislas, Hertz-Pannier, Lucie, Thirion, Bertrand, Modelling brain structure, function and variability based on high-field MRI data (PARIETAL), Inria Saclay - Ile de France, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Service NEUROSPIN (NEUROSPIN), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Unité Baobab (BAOBAB), Service NEUROSPIN (NEUROSPIN), Neuroimagerie cognitive - Psychologie cognitive expérimentale (UNICOG-U992), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Saclay (COmUE)-Institut National de la Santé et de la Recherche Médicale (INSERM), Laboratory of Cognitive Neuroscience (LNCO), Ecole Polytechnique Fédérale de Lausanne (EPFL), Motivation, cerveau et comportement = Motivation, Brain and Behavior [Paris] (MBB), Institut du Cerveau et de la Moëlle Epinière = Brain and Spine Institute (ICM), Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Center for Mind/Brain Sciences (CIMEC), University of Trento [Trento], Laboratoire de psychologie du développement et de l'éducation de l'enfant (LaPsyDÉ - UMR 8240), Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), GIGA [Université Liège], Université de Liège, Forschungszentrum Jülich GmbH | Centre de recherche de Juliers, Helmholtz-Gemeinschaft = Helmholtz Association, Criteo AI Lab, Criteo [Paris], Unité de recherche en NeuroImagerie Applicative Clinique et Translationnelle (UNIACT), Chaire Psychologie cognitive expérimentale, Collège de France (CdF (institution)), Maladies neurodéveloppementales et neurovasculaires (NeuroDiderot (UMR_S_1141 / U1141)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Paris (UP), Université Paris-Saclay-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Inria Saclay - Ile de France, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria), Building large instruments for neuroimaging: from population imaging to ultra-high magnetic fields (BAOBAB), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris-Saclay, Motivation, cerveau et comportement = Motivation, Brain and Behavior [ICM Paris] (MBB), Institut du Cerveau = Paris Brain Institute (ICM), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Collège de France - Chaire Psychologie cognitive expérimentale, Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité), European Project: 720270,H2020 Pilier Excellent Science,H2020-Adhoc-2014-20,HBP SGA1(2016), and European Project: 785907,H2020,HBP SGA2(2018)

Subjects
Statistics and Probability, Data Descriptor, long, Decision, Functional magnetic resonance imaging, [SHS.PSY]Humanities and Social Sciences/Psychology, Brain imaging, Library and Information Sciences, [INFO.INFO-AI]Computer Science [cs]/Artificial Intelligence [cs.AI], Education, Cognition, [STAT.ML]Statistics [stat]/Machine Learning [stat.ML], [INFO.INFO-LG]Computer Science [cs]/Machine Learning [cs.LG], Human behaviour, [INFO.INFO-IM]Computer Science [cs]/Medical Imaging, Humans, Attention, lcsh:Science, ComputingMilieux_MISCELLANEOUS, time, Language, [STAT.AP]Statistics [stat]/Applications [stat.AP], Brain Mapping, [INFO.INFO-DB]Computer Science [cs]/Databases [cs.DB], [SCCO.NEUR]Cognitive science/Neuroscience, capacity, short-term-memory, Brain, Cognitive neuroscience, Magnetic Resonance Imaging, Computer Science Applications, networks, Cognitive control, responses, lcsh:Q, ddc:500, [INFO.INFO-BI]Computer Science [cs]/Bioinformatics [q-bio.QM], Statistics, Probability and Uncertainty, Information Systems, metaanalysis
Abstract

We present an extension of the Individual Brain Charting dataset –a high spatial-resolution, multi-task, functional Magnetic Resonance Imaging dataset, intended to support the investigation on the functional principles governing cognition in the human brain. The concomitant data acquisition from the same 12 participants, in the same environment, allows to obtain in the long run finer cognitive topographies, free from inter-subject and inter-site variability. This second release provides more data from psychological domains present in the first release, and also yields data featuring new ones. It includes tasks on e.g. mental time travel, reward, theory-of-mind, pain, numerosity, self-reference effect and speech recognition. In total, 13 tasks with 86 contrasts were added to the dataset and 63 new components were included in the cognitive description of the ensuing contrasts. As the dataset becomes larger, the collection of the corresponding topographies becomes more comprehensive, leading to better brain-atlasing frameworks. This dataset is an open-access facility; raw data and derivatives are publicly available in neuroimaging repositories., Measurement(s) functional brain measurement • regional part of brain • brain measurement • cognition Technology Type(s) functional magnetic resonance imaging Factor Type(s) type of task Sample Characteristic - Organism Homo sapiens Machine-accessible metadata file describing the reported data: 10.6084/m9.figshare.12958181

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38. Building the Arrow of Time ... Over Time: A Sequence of Brain Activity Mapping Imagined Events in Time and Space

Author

Gauthier, Baptiste, Pestke, Karin, and van Wassenhove, Virginie

Subjects
future, meg, hippocampus, episodic memory, cognitive map, meg/eeg, time arrow, self, cortex, connectivity, order, mental time, roles, travel, self-projection
Abstract

When moving, the spatiotemporal unfolding of events is bound to our physical trajectory, and time and space become entangled in episodic memory. When imagining past or future events, or being in different geographical locations, the temporal and spatial dimensions of mental events can be independently accessed and manipulated. Using time-resolved neuroimaging, we characterized brain activity while participants ordered historical events from different mental perspectives in time (e.g., when imagining being 9 years in the future) or in space (e.g., when imagining being in Cayenne). We describe 2 neural signatures of temporal ordinality: an early brain response distinguishing whether participants were mentally in the past, the present or the future (self-projection in time), and a graded activity at event retrieval, indexing the mental distance between the representation of the self in time and the event. Neural signatures of ordinality and symbolic distances in time were distinct from those observed in the homologous spatial task: activity indicating spatial order and distances overlapped in latency in distinct brain regions. We interpret our findings as evidence that the conscious representation of time and space share algorithms (egocentric mapping, distance, and ordinality computations) but different implementations with a distinctive status for the psychological "time arrow."

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