Direct and indirect negatively valenced engagement behavior

Improving Robot Motor Learning with Negatively Valenced Reinforcement Signals

Both nociception and punishment signals have been used in robotics. However, the potential for using these negatively valenced types of reinforcement learning signals for robot learning has not been exploited in detail yet. Nociceptive signals are primarily used as triggers of preprogrammed action sequences. Punishment signals are typically disembodied, i.e., with no or little relation to the a...

Striatal direct and indirect pathways control decision-making behavior

Despite our ever-changing environment, animals are remarkably adept at selecting courses of action that are predictive of optimal outcomes. While requiring the contribution of a number of brain regions, a vast body of evidence implicates striatal mechanisms of associative learning and action selection to be critical to this ability. While numerous models of striatal-based decision-making have b...

O12: Direct and Indirect Insults of Traumatic Brain Injury

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Direct and Indirect Representation

How much can a constituency influence the power of its representative in the legislature? We develop a theoretical model of the constituency basis of legislator influence. The key players in the model are interest groups who may receive targeted transfers from the legislature. The model predicts that the amount of transfers that such groups receive is increasing in their ability to help a party...

Direct and Indirect Belief