Marie Prevost

Marie Prevost

AgreenSkills session, year: 2nd session, 2013

Receiving laboratory: Grenoble Applied Economy Laboratory (GAEL), France

Country of origin : Canada




Mobility project

The influences of emotions and heuristic reasoning on food behaviors: a neuroeconomic approach

Broadly speaking, my mobility research project explores how emotions influence decision making in general. We are looking at the cerebral correlates of food decision making, a highly emotional process due to the basic need for food that we have for survival. More specifically, we are testing the influences of emotions and mental shortcuts such as heuristics on our everyday food choices, and how they affect our evaluation of the healthiness of these food products.

Biography & research interests

I started to study biology as an undergraduate and only later focused on the brain and its pathologies during my Masters. During my PhD in neuroscience, I used event-related potentials to investigate how we process meaningful information in related or unrelated contexts and to what extent these processes are influenced by paranoid feelings, which we induced in participants. I then accepted a postdoctoral position in Professor Ian Gold’s neurophilosophy lab, where the concept of trust (and paranoia) was investigated from theoretical and experimental perspectives, exploring the role of oxytocin and social cognition in trust behaviour and tendencies. We collaborated with Dr Beate DItzen, in Zurich, and with Dr Mathieu Brodeur in Montreal, to broaden our approaches. And I am now investigating decision making processes and how emotions influence them. My research interests are, thus, numerous and I enjoy the challenges that each new job brings to me.

Selected publications

Prévost M, Gold I. The importance of trusting your doctor. Invited Book Chapter in Raz A & Harris C, Talking Placebos: Modern perspectives on placebos in society. (In Press). Oxford University Press

Prévost M, Debruille JB. Cooccurrence des croyances religieuses, superstitieuses et de type délirant. (In Press). Santé Mentale au Québec.

Prévost M, Carrier ME, Chowne G, Zelkowitz P, Joseph L, Gold I. (2014). The Reading the Mind in the Eyes Test: validation of a French version and exploration of cultural variations in a multi-ethnic city. Cognitive Neuropsychiatry, 19(3):189-204.

Prévost M, Zelkowitz P, Tulandi T, Hayton B, Feeley N, Carter CS, Joseph L, Yong Ping E, Habenhaim H, Gold I. (2014). Oxytocin in pregnancy and the postpartum: relations to labor and its management. Frontiers in Public Health, 2(1):1.

Debruille JB, Rodier M, Prévost M, Lionnet C, Molavi S. (2013). Effects of a small dose of olanzapine on healthy subjects according to their schizotypy: An ERP

study using a semantic categorization and an oddball task. European Neuropsychopharmacology, 23(5), 339-350

Prévost M. (2012).  John M. Gottman, The Science of Trust: Emotional Attunement for Couples. Transcultural Psychiatry, 49(1):142-144

Renoult L, Wang X, Calcagno V, Prévost M, Debruille JB. (2012). From N400 to N300: variations in the timing of semantic processing with repetition. Neuroimage, 61(1), 206-215

Prévost M, Zuckerman A, Gold I. (2011). Trust and placebos. Journal of Mind-Body Regulation, 1(3):138-142

Rodier M*, Prévost M*, Renoult L, Lionnet C, Kwann Y, Dionne-Dostie E, Chapleau I & Debruille JB. (2011). Healthy people with delusional ideation change their mind with conviction. Psychiatry Research, 189: 433-439 (* both authors contributed equally).

Prévost M, Rodier M, Lionnet C, Brodeur M, King S, Debruille JB. (2011). Paranoid induction reduces N400s of healthy subjects with delusional-like ideation. Psychophysiology, 48: 937-949

Brodeur MB, Debruille JB, Renoult L, Prévost M, Dionne-Dostie E, Buchy L, Lepage M. (2011). The influence of contour fragmentation on recognition memory: An event-related potential study. Brain and Cognition, 76: 115–122.

Prévost M, Rodier M, Renoult L, Kwann Y, Chapleau I, Dionne-Dostie E, Brodeur M, Lionnet C & Debruille JB. (2010). Schizotypal traits and N400 in healthy subjects. Psychophysiology, 47(6):1047-1056.

Rey G, Knoblauch K, Prévost M, Komano O, Jouvent R and Dubal S. (2010). Visual modulation of pleasure in subjects with physical and social anhedonia. Psychiatry Research, 176(2-3):155-60.

Brodeur M, Bacon BA, Renoult L, Prévost M, Lepage M and Debruille JB. (2008). On the functional significance of the P1 and N1 effects to illusory figures in the notch mode of presentation. PLoS ONE, 3(10):e3505.

Renoult L, Prévost M, Brodeur M, Lionnet C, Joober R, Malla A and Debruille JB. (2007). P300 asymmetry and positive symptom severity: A study in the early stage of a first episode of psychosis. Schizophrenia Research, 93(1-3); 366-373



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