Wolfram Schultz

A Neural Substrate of Prediction and Reward (2009)

M. Romanski, J. E. Ledoux, J. Neurosci, J. L. Armony, J. D. Cohen, ...

The capacity to predict future events permits a creature to detect, model, and manipulate the causal structure of its interactions with its environment. Behavioral experiments suggest that learning...

A Neural Substrate of Prediction and Reward (2008)

M. Romanski, J. E. Ledoux, J. Neurosci, J. L. Armony, J. D. Cohen, ...

The capacity to predict future events permits a creature to detect, model, and manipulate the causal structure of its interactions with its environment. Behavioral experiments suggest that learning...

Explicit neural signals reflecting reward uncertainty (2008)

Schultz, Wolfram, Preuschoff, Kerstin, Camerer, Colin, Hsu, Ming, Fiorillo, Christopher D., Tobler, Philippe N., ...

The acknowledged importance of uncertainty in economic decision making has stimulated the search for neural signals that could influence learning and inform decision mechanisms. Current views...

A Neural Substrate of Prediction and Reward (2008)

M. Romanski, J. E. Ledoux, J. Neurosci, J. L. Armony, J. D. Cohen, ...

The capacity to predict future events permits a creature to detect, model, and manipulate the causal structure of its interactions with its environment. Behavioral experiments suggest that learning...

Neuronal Distortions of Reward Probability without Choice (2008)

Tobler, Phillippe N., Christopoulos, George I., O'Doherty, John P., Dolan, Raymond J., Schultz, Wolfram

Reward probability crucially determines the value of outcomes. A basic phenomenon, defying explanation by traditional decision theories, is that people often overweigh small and underweigh large...

Explicit neural signals reflecting reward uncertainty (2008)

Schultz, Wolfram, Preuschoff, Kerstin, Camerer, Colin, Hsu, Ming, Fiorillo, Christopher D., Tobler, Phillippe N., ...

The acknowledged importance of uncertainty in economic decision making has stimulated the search for neural signals that could influence learning and inform decision mechanisms. Current views...

Dissociating the Role of the Orbitofrontal Cortex and the Striatum in the Computation of Goal Values and Prediction Errors (2008)

Hare, Todd A., O'Doherty, John P., Camerer, Colin F., Schultz, Wolfram, Rangel, Antonio

To make sound economic decisions, the brain needs to compute several different value-related signals. These include goal values that measure the predicted reward that results from the outcome...

Herding and Social Pressure in Trading Tasks: A Behavioural Analysis (2007)

Baddeley, Michelle, Pillas, Demetris, Christopoulos, Yorgos, Schultz, Wolfram, Tobler, Phillipe

We extend the experimental literature on Bayesian herding using evidence from a financial decision-making experiment. We identify significant propensities to herd increasing with the degree of...

Dopamine responses comply with basic assumptions of formal learning theory (2006)

Waelti, Pascale, Dickinson, Anthony, Schultz, Wolfram

According to contemporary learning theories, the discrepancy, or error, between the actual and predicted reward determines whether learning occurs when a stimulus is paired with a reward. The role of...

Dopamine responses comply with basic assumptions of formal learning theory (2006)

Waelti, Pascale, Dickinson, Anthony, Schultz, Wolfram

According to contemporary learning theories, the discrepancy, or error, between the actual and predicted reward determines whether learning occurs when a stimulus is paired with a reward. The role of...

Discrete coding of reward probability and uncertainty by dopamine neurons (2006)

Fiorillo, Christopher D., Tobler, Philippe N, Schultz, Wolfram

Uncertainty is critical in the measure of information and in assessing the accuracy of predictions. It is determined by probability P, being maximal at P = 0.5 and decreasing at higher and lower...

Discrete coding of reward probability and uncertainty by dopamine neurons (2006)

Fiorillo, Christopher D., Tobler, Philippe N, Schultz, Wolfram

Uncertainty is critical in the measure of information and in assessing the accuracy of predictions. It is determined by probability P, being maximal at P = 0.5 and decreasing at higher and lower...

Adaptive coding of reward value by dopamine neurons (2006)

Tobler, Philippe N., Fiorillo, Christopher D., Schultz, Wolfram

It is important for animals to estimate the value of rewards as accurately as possible. Because the number of potential reward values is very large, it is necessary that the brain's limited resources...

Adaptive coding of reward value by dopamine neurons (2006)

Tobler, Philippe N., Fiorillo, Christopher D., Schultz, Wolfram

It is important for animals to estimate the value of rewards as accurately as possible. Because the number of potential reward values is very large, it is necessary that the brain's limited resources...

Relative reward processing in primate striatum (2005)

Cromwell, Howard C., Hassani, Oum K., Schultz, Wolfram

Rewards are often not only valued according to their physical characteristics but also relative to other available rewards. The striatum (caudate nucleus, putamen, ventral striatum including nucleus...

Relative reward processing in primate striatum (2005)

Cromwell, Howard C., Hassani, Oum K., Schultz, Wolfram

Rewards are often not only valued according to their physical characteristics but also relative to other available rewards. The striatum (caudate nucleus, putamen, ventral striatum including nucleus...

Coding of predicted reward omission by dopamine neurons in a conditioned inhibition paradigm (2003)

Anthony Dickinson, Wolfram Schultz

Animals learn not only about stimuli that predict reward but also about those that signal the omission of an expected reward. We used a conditioned inhibition paradigm derived from animal learning...

Reward Processing in Primate Orbitofrontal Cortex and Basal Ganglia (2000)

Schultz, Wolfram, Tremblay, Léon, Hollerman, Jeffrey R.

This article reviews and interprets neuronal activities related to the expectation and delivery of reward in the primate orbitofrontal cortex, in comparison with slowly discharging neurons in the...

Internal Model Reproduces Anticipatory Neural Activity (1999)

Roland Suri And, E. Suri, Wolfram Schultz

biological neural networks suggests that chains of neurons with anticipatory activity underlie formation of novel associative chains. In conclusion, anticipatory activity seems to reflect the...

Predictive reward signal of dopamine neurons (1998)

Wolfram Schultz

Schultz, Wolfram. Predictive reward signal of dopamine neurons. is called rewards, which elicit and reinforce approach behav-J. Neurophysiol. 80: 1–27, 1998. The effects of lesions, receptor ior....

Learning of Sequential Movements By Neural Network Model With Dopamine-Like Reinforcement Signal (1998)

Roland E. Suri, Wolfram Schultz, R. E. Suri, W. Schultz

Dopamine neurons appear to code an error in the prediction of reward. They are activated by unpredicted rewards, are not influenced by predicted rewards, and are depressed when a predicted reward is...

Neural Correlates of Learning in the Prefrontal Cortex of the Monkey: A Predictive Model (1995)

Guigon, Emmanuel, Dorizzi, Bernadette, Burnod, Yves, Schultz, Wolfram

The principles underlying the organization and operation of the prefrontal cortex have been addressed by neural network modeling. The involvement of the prefrontal cortex in the temporal organization...

Human Neural Learning Depends on Reward Prediction Errors in the Blocking Paradigm

Tobler, Philippe N., O’Doherty, John P., Dolan, Raymond J., Schultz, Wolfram

Learning occurs when an outcome deviates from expectation (prediction error). According to formal learning theory, the defining paradigm demonstrating the role of prediction errors in learning is the...

Reward Value Coding Distinct From Risk Attitude-Related Uncertainty Coding in Human Reward Systems

Tobler, Philippe N., O'Doherty, John P., Dolan, Raymond J., Schultz, Wolfram

When deciding between different options, individuals are guided by the expected (mean) value of the different outcomes and by the associated degrees of uncertainty. We used functional magnetic...

Short-Term Temporal Discounting of Reward Value in Human Ventral Striatum

Gregorios-Pippas, Lucy, Tobler, Philippe N., Schultz, Wolfram

Delayed rewards lose their value for economic decisions and constitute weaker reinforcers for learning. Temporal discounting of reward value already occurs within a few seconds in animals, which...

Explicit neural signals reflecting reward uncertainty

Schultz, Wolfram, Preuschoff, Kerstin, Camerer, Colin, Hsu, Ming, Fiorillo, Christopher D, Tobler, Philippe N, ...

The acknowledged importance of uncertainty in economic decision making has stimulated the search for neural signals that could influence learning and inform decision mechanisms. Current views...

Introduction. Neuroeconomics: the promise and the profit

Schultz, Wolfram

Neuroeconomics investigates the neural mechanisms underlying decisions about rewarding or punishing outcomes (‘economic’ decisions). It combines the knowledge about the behavioural phenomena of...

Risk-dependent reward value signal in human prefrontal cortex

Tobler, Philippe N., Christopoulos, George I., O'Doherty, John P., Dolan, Raymond J., Schultz, Wolfram

When making choices under uncertainty, people usually consider both the expected value and risk of each option, and choose the one with the higher utility. Expected value increases the expected...