1. Illusory own body perceptions mapped in the cingulate cortex—An intracranial stimulation study
- Author
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Fabrice Bartolomei, Andrei Barborica, Ovidiu‐Alexandru Bajenaru, Irina Popa, Maria-Paola Valenti-Hirsch, Julia Scholly, Andrei Daneasa, Edouard Hirsch, Mihai Dragos Maliia, Cristian Donos, Anca Adriana Arbune, Jean Ciurea, Stanislas Lagarde, Ioana Mindruta, CHU Strasbourg, Institut de Neurosciences des Systèmes (INS), Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Service de neurophysiologie clinique [Hôpital de la Timone - APHM], Hôpital de la Timone [CHU - APHM] (TIMONE), University of Medicine and Pharmacy 'Carol Davila' Bucharest (UMPCD), Institut National de la Santé et de la Recherche Médicale (INSERM)-Aix Marseille Université (AMU), and Carol Davila university of Medicine and Pharmacy of Bucharest
- Subjects
Cingulate cortex ,Adult ,medicine.medical_specialty ,Drug Resistant Epilepsy ,Posterior parietal cortex ,Sensory system ,Stimulation ,Electroencephalography ,Audiology ,Body awareness ,Gyrus Cinguli ,050105 experimental psychology ,03 medical and health sciences ,0302 clinical medicine ,Sensation ,Connectome ,Medicine ,Humans ,0501 psychology and cognitive sciences ,Radiology, Nuclear Medicine and imaging ,Kinesthesis ,Research Articles ,ComputingMilieux_MISCELLANEOUS ,Cerebral Cortex ,Radiological and Ultrasound Technology ,medicine.diagnostic_test ,business.industry ,[SCCO.NEUR]Cognitive science/Neuroscience ,05 social sciences ,Awareness ,Proprioception ,Electric Stimulation ,Neurology ,Neurology (clinical) ,sense organs ,Electrocorticography ,Anatomy ,Nerve Net ,business ,Insula ,030217 neurology & neurosurgery - Abstract
Body awareness is the result of sensory integration in the posterior parietal cortex; however, other brain structures are part of this process. Our goal is to determine how the cingulate cortex is involved in the representation of our body. We retrospectively selected patients with drug‐resistant epilepsy, explored by stereo‐electroencephalography, that had the cingulate cortex sampled outside the epileptogenic zone. The clinical effects of high‐frequency electrical stimulation were reviewed and only those sites that elicited changes related to body perception were included. Connectivity of the cingulate cortex and other cortical structures was assessed using the h (2) coefficient, following a nonlinear regression analysis of the broadband EEG signal. Poststimulation changes in connectivity were compared between two sets of stimulations eliciting or not eliciting symptoms related to body awareness (interest and control groups). We included 17 stimulations from 12 patients that reported different types of body perception changes such as sensation of being pushed toward right/left/up, one limb becoming heavier/lighter, illusory sensation of movement, sensation of pressure, sensation of floating or detachment of one hemi‐body. High‐frequency stimulation in the cingulate cortex (1 anterior, 15 middle, 1 posterior part) elicits body perception changes, associated with a decreased connectivity of the dominant posterior insula and increased coupling between other structures, located particularly in the nondominant hemisphere.
- Published
- 2019
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