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• W2912911222 abstract "Event Abstract Back to Event Nociceptive gamma-band oscillations recorded from the human insula are related to the activation of the spinothalamic tract Giulia Liberati1*, Maxime Algoet1, Emanuel Van Den Broeke1, Susana Ferrao Santos2, José Géraldo Ribeiro Vaz2, Christian Raftopoulos2 and André Mouraux1 1 Université catholique de Louvain, Belgium 2 St. Luc University Hospital, Belgium Background: Using intracerebral electroencephalography, we recently observed that painful heat stimuli, but not non-painful tactile, auditory, and visual stimuli, elicit an enhancement of gamma-band oscillations (GBOs) in the human insula (Liberati et al., under review). This enhancement could be due to different features of the stimuli, such as (i) their painful quality, (ii) the fact that they activate the spinothalamic system, or (iii) the fact that they convey thermal information. Aims: To disentangle the possible different aspects underlying the enhancement of GBOs, we examined whether insular GBOs would be elicited by non-painful cool stimuli and non-thermal but painful mechanical pinprick stimuli. Methods: Intracerebral EEG was recorded in four patients undergoing a presurgical evaluation of intractable epilepsy (29 insular contacts). Four types of short-lasting stimuli were delivered on the contralateral hand dorsum: (i) painful 62.5°C laser stimuli activating heat-sensitive nociceptors; (ii) mechanical pinprick stimuli activating mechano-sensitive nociceptors; (iii) innocuous cool stimuli activating cool-sensitive free nerve endings; and (iv) innocuous vibrotactile stimuli activating mechanoreceptors of the medial lemniscus system. Results: In all patients, all stimuli elicited clear low-frequency phase-locked local field potential (LFPs). In contrast, laser heat stimuli, mechanical pinprick stimuli, and cool stimuli – but not vibrotactile stimuli – elicited an early latency (150-300 ms) enhancement of GBOs (40-90 Hz) similar to what was observed following laser stimulation in our previous study. Conclusions: These preliminary findings suggest that stimuli activating the spinothalamic system elicit a consistent enhancement of GBOs in the human insula, regardless of whether they convey thermal sensations or generate pain. Acknowledgements This study was supported by a European Research Council (ERC) Starting Grant (PROBING-PAIN 336130) and by the the Fonds National de la Recherche Scientifique (FNRS, Belgium). Keywords: Nociception, Local Field Potentials, gamma-band oscillations, Spinothalamic tract, intracerebral EEG Conference: 12th National Congress of the Belgian Society for Neuroscience, Gent, Belgium, 22 May - 22 May, 2017. Presentation Type: Oral Presentation Topic: Sensory and Motor Systems Citation: Liberati G, Algoet M, Van Den Broeke E, Ferrao Santos S, Ribeiro Vaz J, Raftopoulos C and Mouraux A (2019). Nociceptive gamma-band oscillations recorded from the human insula are related to the activation of the spinothalamic tract . Front. Neurosci. Conference Abstract: 12th National Congress of the Belgian Society for Neuroscience. doi: 10.3389/conf.fnins.2017.94.00083 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 23 Apr 2017; Published Online: 25 Jan 2019. * Correspondence: PhD. Giulia Liberati, Université catholique de Louvain, Louvain-la-Neuve, Belgium, giulia.liberati@uclouvain.be Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. Abstract Info Abstract The Authors in Frontiers Giulia Liberati Maxime Algoet Emanuel Van Den Broeke Susana Ferrao Santos José Géraldo Ribeiro Vaz Christian Raftopoulos André Mouraux Google Giulia Liberati Maxime Algoet Emanuel Van Den Broeke Susana Ferrao Santos José Géraldo Ribeiro Vaz Christian Raftopoulos André Mouraux Google Scholar Giulia Liberati Maxime Algoet Emanuel Van Den Broeke Susana Ferrao Santos José Géraldo Ribeiro Vaz Christian Raftopoulos André Mouraux PubMed Giulia Liberati Maxime Algoet Emanuel Van Den Broeke Susana Ferrao Santos José Géraldo Ribeiro Vaz Christian Raftopoulos André Mouraux Related Article in Frontiers Google Scholar PubMed Abstract Close Back to top Javascript is disabled. Please enable Javascript in your browser settings in order to see all the content on this page." @default.
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• W2912911222 title "Nociceptive gamma-band oscillations recorded from the human insula are related to the activation of the spinothalamic tract" @default.
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