Description du projet
Moduler la douleur par le biais du conditionnement
Pour les patients atteints de douleur chronique, le traitement pharmacologique ne parvient toujours pas à apporter un soulagement durable et efficace. Cette situation génère un besoin en matière de traitements qui tiennent compte du facteur psychologique. Toutefois, il est nécessaire de mener une étude plus approfondie sur la base neuronale du processus et la manière dont l’activité cérébrale évolue afin de reconnaître les informations pertinentes et non pertinentes pendant le conditionnement. Le projet NeuroCon, financé par l’UE, entend comprendre la relation entre le conditionnement classique et les attentes en matière d’effet placebo analgésique. En outre, il examinera la mise en œuvre de formes classiques de conditionnement dans le contexte de la peur fondamentale. Le projet espère déterminer la manière dont les cortex sensoriels sont modifiés pour mieux identifier les informations pertinentes.
Objectif
Chronic pain patients cannot be efficiently treated with pharmacological methods and hence investigating alternatives such as psychological-based treatments is essential. One of the well-recognised method of analgesia is placebo which is based on learning processes – classical conditioning (CC). Through CC, expectations about pain relief are formed and those are recognised to mediate the placebo effect. Moreover, the effects of CC play a prominent role in the development of chronic pain-related fear and disability, so investigating the basis of fear conditioning may help developing better pain management strategies.
Expectations about pain relief are shown to reduce the activation of pain-related brain regions and cues associated with pain decrease are processed in higher-order areas of the brain. However, the latest studies are inconclusive in determining to what extent expectations are elicited consciously or unconsciously and it is suggested that it depends the way the effect is generated - simple conditioning or conditioning with verbally induced expectations. In order to bring new light on this subject, the neural basis of the process and how the brain activity changes in order to recognise relevant and irrelevant information during conditioning still needs further investigation.
In order to understand the relation between CC and expectancy in placebo analgesia, this project will implement both types of CC in the context of basic fear conditioning procedure. The brain activity will be measured using MEG and EEG technique and investigated using multiple methods of signal analysis which is a novelty in placebo research. The aim of the project is investigating how sensory cortices are modified to better detect relevant information using MEG and studying anticipatory brain activity using EEG. It may provide an answer to what extent conscious and unconscious processes are involved in pain modulation and what regions of are involved in this process.
Champ scientifique
Mots‑clés
Programme(s)
Régime de financement
MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)Coordinateur
28040 Madrid
Espagne