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Understanding and improving human motivational capacities: A focus on glutathione in the ventral striatum

Descrizione del progetto

Metabolismo cerebrale e motivazione: esiste un collegamento?

La motivazione coinvolge le forze biologiche e cognitive che conducono a uno specifico comportamento. Poiché la mancanza di motivazioni è stata associata alla depressione, comprendere i meccanismi cerebrali sottostanti potrebbe aiutare la progettazione di nuovi trattamenti. Il progetto LGCMOT, finanziato dall’UE, sta lavorando all’ipotesi secondo cui il metabolismo dello striato ventrale, la parte del cervello associata al comportamento motivato, svolge un ruolo importante nella motivazione. I ricercatori del progetto quantificheranno i livelli di glutatione antiossidante e li assoceranno all’attività neurale dello striato ventrale. Testeranno, inoltre, le ripercussioni dell’intervento nutrizionale sul comportamento motivato.

Obiettivo

Motivation -the process that facilitates overcoming the cost of effortful actions to attain desired outcomes- is key to achievement and well-being. Importantly, there are major individual differences in motivational levels. Low motivation can reflect states of fatigue or depression not only in patients, but also in the general population, and there is currently no effective treatment to ameliorate this condition. Understanding the brain mechanisms linked to variation in motivated behavior will be of utmost importance to advancing treatments. Brain metabolism in the ventral striatum -a brain’s motivation hub- is emerging as a strong regulator of motivated behaviors. Strong pilot data from the host lab has underscored a striking correspondence between glutathione (GSH) - the most prominent antioxidant – levels in the ventral striatum and motivate on the prediction of effort-based motivated behavior. However, solid evidence is still lacking. The goal of this proposal is to determine whether GSH levels in the ventral striatum relate to widespread levels of effortful performance in healthy human subjects. To this end, I will use a combination of high-field (7T) 1H-Magnetic Resonance Spectroscopy (1H-MRS; to quantify GSH levels in the ventral striatum, and in the occipital cortex as control region), functional Magnetic Resonance Imaging (fMRI; focusing on BOLD activity in the ventral striatum), behavioral testing for physical and cognitive effort-based motivation, and computational modeling (allowing to dissect specific motivational components). In addition, a 7-days nutritional intervention (N-acetyl-cysteine or placebo) to manipulate the GSH system will be tested for its effectiveness to 1) increase striatal GSH levels; and 2) improve specific aspects of motivated behavior (e.g. incentive valuation, effortful performance) in the physical and/or cognitive effort tasks. Therefore, LGCMOT outcomes will greatly advance knowledge in the emerging field of neurometabolism.

Campo scientifico (EuroSciVoc)

CORDIS classifica i progetti con EuroSciVoc, una tassonomia multilingue dei campi scientifici, attraverso un processo semi-automatico basato su tecniche NLP.

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Coordinatore

ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE
Contribution nette de l'UE
€ 191 149,44
Indirizzo
BATIMENT CE 3316 STATION 1
1015 Lausanne
Svizzera

Mostra sulla mappa

Regione
Schweiz/Suisse/Svizzera Région lémanique Vaud
Tipo di attività
Higher or Secondary Education Establishments
Collegamenti
Costo totale
€ 191 149,44