Despite being considered primarily a mood disorder, major depressive disorder (MDD) is characterized by
cognitive and decision making deficits. Recent research has employed computational models of reinforcement
learning (RL) to address these deficits. The computational approach has the advantage in making
explicit predictions about learning and behavior, specifying the process parameters of RL, differentiating
between model-free and model-based RL, and the computational model-based functional magnetic
resonance imaging and electroencephalography. With these merits there has been an emerging field of
computational psychiatry and here we review specific studies that focused on MDD.
Considerable evidence suggests that MDD is associated with impaired brain signals of reward prediction
error and expected value (‘wanting’), decreased reward sensitivity (‘liking’) and/or learning (be
it model-free or model-based), etc., although the causality remains unclear. These parameters may
serve as valuable intermediate phenotypes of MDD, linking general clinical symptoms to underlying
molecular dysfunctions. We believe future computational research at clinical, systems, and cellular/
molecular/genetic levels will propel us toward a better understanding of the disease.
Despite being considered primarily a mood disorder, major depressive disorder (MDD) is characterized bycognitive and decision making deficits. Recent research has employed computational models of reinforcementlearning (RL) to address these deficits. The computational approach has the advantage in makingexplicit predictions about learning and behavior, specifying the process parameters of RL, differentiatingbetween model-free and model-based RL, and the computational model-based functional magneticresonance imaging and electroencephalography. With these merits there has been an emerging field ofcomputational psychiatry and here we review specific studies that focused on MDD.Considerable evidence suggests that MDD is associated with impaired brain signals of reward predictionerror and expected value (‘wanting’), decreased reward sensitivity (‘liking’) and/or learning (beit model-free or model-based), etc., although the causality remains unclear. These parameters mayserve as valuable intermediate phenotypes of MDD, linking general clinical symptoms to underlyingmolecular dysfunctions. We believe future computational research at clinical, systems, and cellular/molecular/genetic levels will propel us toward a better understanding of the disease.
การแปล กรุณารอสักครู่..