Reward sensitivity modulates connectivity among reward brain areas during processing of anticipatory reward cues

Reward Sensitivity Modulates Connectivity Among Reward Brain Areas When Processing Anticipatory Reward Cues

Reward sensitivity or the tendency to engage in motivated approach behavior in the presence of rewarding stimuli, may be a contributing factor to vulnerability to disinhibitory behaviors. While evidence exists for a reward sensitivity-related increased response in reward brain areas (i.e., nucleus accumbens or midbrain) during the processing of reward cues, it is unknown how this trait modulate...

Neural Processing of Calories in Brain Reward Areas Can be Modulated by Reward Sensitivity

A food's reward value is dependent on its caloric content. Furthermore, a food's acute reward value also depends on hunger state. The drive to obtain rewards (reward sensitivity), however, differs between individuals. Here, we assessed the association between brain responses to calories in the mouth and trait reward sensitivity in different hunger states. Firstly, we assessed this in data from ...

Functional connectivity in obesity during reward processing

Obesity is a health problem that has become a major focus of attention in recent years. There is growing evidence of an association between obesity and differences in reward processing. However, it is not known at present whether these differences are linked exclusively to food, or whether they can be detected in other rewarding stimuli. We compared responses to food, rewarding non-food and neu...

Asymptotic Behavior of Multivariate Reward Processes with Nonlinear Reward Functions

COVARIANCE MATRIX OF MULTIVARIATE REWARD PROCESSES WITH NONLINEAR REWARD FUNCTIONS

Multivariate reward processes with reward functions of constant rates, defined on a semi-Markov process, first were studied by Masuda and Sumita, 1991. Reward processes with nonlinear reward functions were introduced in Soltani, 1996. In this work we study a multivariate process , , where are reward processes with nonlinear reward functions respectively. The Laplace transform of the covar...