2018
Probabilistic functional tractography of the human cortex revisited
TREBAUL, Lena, Pierre DEMAN, Viateur TUYISENGE, Maciej JEDYNAK, Etienne HUGUES et. al.Základní údaje
Originální název
Probabilistic functional tractography of the human cortex revisited
Autoři
TREBAUL, Lena (250 Francie), Pierre DEMAN (250 Francie), Viateur TUYISENGE (250 Francie), Maciej JEDYNAK (250 Francie), Etienne HUGUES (250 Francie), David RUDRAUF (250 Francie), Manik BHATTACHARJEE (250 Francie), Francois TADEL (250 Francie), Blandine CHANTELOUP-FORET (250 Francie), Caroline SAUBAT (250 Francie), Gina Catalina Reyes MEJIA (250 Francie), Claude ADAM (250 Francie), Anca NICA (250 Francie), Martin PAIL (203 Česká republika, domácí), Francois DUBEAU (124 Kanada), Sylvain RHEIMS (250 Francie), Agnes TREBUCHON (250 Francie), Haixiang WANG (156 Čína), Sinclair LIU (156 Čína), Thomas BLAUWBLOMME (250 Francie), Mercedes GARCES (724 Španělsko), Luca DE PALMA (380 Itálie), Antonio VALENTIN (826 Velká Británie a Severní Irsko), Eeva-Liisa METSAHONKALA (246 Finsko), Ana Maria PETRESCU (250 Francie), Elizabeth LANDRE (250 Francie), William SZURHAJ (250 Francie), Edouard HIRSCH (250 Francie), Luc VALTON (250 Francie), Rodrigo ROCAMORA (724 Španělsko), Andreas SCHULZE-BONHAGE (276 Německo), Ioana MINDRUTA (642 Rumunsko), Stefano FRANCIONE (380 Itálie), Louis MAILLARD (250 Francie), Delphine TAUSSIG (250 Francie), Philippe KAHANE (250 Francie) a Olivier DAVID (250 Francie, garant)
Vydání
Neuroimage, San Diego, ACADEMIC PRESS INC ELSEVIER SCIENCE, 2018, 1053-8119
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
30103 Neurosciences
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 5.812
Kód RIV
RIV/00216224:14110/18:00104225
Organizační jednotka
Lékařská fakulta
UT WoS
000445165600036
Klíčová slova anglicky
Brain atlas; Epilepsy; Intracranial electroencephalogram; Cortico-cortical evoked potentials; Connectivity mapping
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 10. 2. 2019 18:03, Soňa Böhmová
Anotace
V originále
In patients with pharmaco-resistant focal epilepsies investigated with intracranial electroencephalography (iEEG), direct electrical stimulations of a cortical region induce cortico-cortical evoked potentials (CCEP) in distant cerebral cortex, which properties can be used to infer large scale brain connectivity. In 2013, we proposed a new probabilistic functional tractography methodology to study human brain connectivity. We have now been revisiting this method in the F-TRACT project (f-tract.eu) by developing a large multicenter CCEP database of several thousand stimulation runs performed in several hundred patients, and associated processing tools to create a probabilistic atlas of human cortico-cortical connections. Here, we wish to present a snapshot of the methods and data of F-TRACT using a pool of 213 epilepsy patients, all studied by stereo-encephalography with intracerebral depth electrodes. The CCEPs were processed using an automated pipeline with the following consecutive steps: detection of each stimulation run from stimulation artifacts in raw intracranial EEG (iEEG) files, bad channels detection with a machine learning approach, model-based stimulation artifact correction, robust averaging over stimulation pulses. Effective connectivity between the stimulated and recording areas is then inferred from the properties of the first CCEP component, i.e. onset and peak latency, amplitude, duration and integral of the significant part. Finally, group statistics of CCEP features are implemented for each brain parcel explored by iEEG electrodes. The localization (coordinates, white/gray matter relative positioning) of electrode contacts were obtained from imaging data (anatomical MRI or CT scans before and after electrodes implantation). The iEEG contacts were repositioned in different brain parcellations from the segmentation of patients' anatomical MRI or from templates in the MNI coordinate system. The F-TRACT database using the first pool of 213 patients provided connectivity probability values for 95% of possible intrahemispheric and 56% of interhemispheric connections and CCEP features for 78% of intrahemisheric and 14% of interhemispheric connections. In this report, we show some examples of anatomo-functional connectivity matrices, and associated directional maps. We also indicate how CCEP features, especially latencies, are related to spatial distances, and allow estimating the velocity distribution of neuronal signals at a large scale. Finally, we describe the impact on the estimated connectivity of the stimulation charge and of the contact localization according to the white or gray matter. The most relevant maps for the scientific community are available for download on f-tract. eu (David et al., 2017) and will be regularly updated during the following months with the addition of more data in the F-TRACT database. This will provide an unprecedented knowledge on the dynamical properties of large fiber tracts in human.