• Publications
  • Influence
Separate Valuation Subsystems for Delay and Effort Decision Costs
We used model-based neuroimaging to test whether the human brain uses separate valuation systems for rewards (erotic stimuli) associated with different types of costs, namely, delay and effort. Expand
  • 349
  • 31
  • PDF
Variation in dopamine genes influences responsivity of the human reward system
In humans, dopamine neurotransmission is influenced by functional polymorphisms in the dopamine transporter (DAT1) and catechol-O-methyltransferase (COMT) genes. Here, we used event-relatedExpand
  • 334
  • 29
  • PDF
Processing of primary and secondary rewards: A quantitative meta-analysis and review of human functional neuroimaging studies
One fundamental question concerning brain reward mechanisms is to determine how reward-related activity is influenced by the nature of rewards. Here, we review the neuroimaging literature andExpand
  • 450
  • 28
  • PDF
Menstrual cycle phase modulates reward-related neural function in women
There is considerable evidence from animal studies that the mesolimbic and mesocortical dopamine systems are sensitive to circulating gonadal steroid hormones. Less is known about the influence ofExpand
  • 440
  • 25
  • PDF
The Architecture of Reward Value Coding in the Human Orbitofrontal Cortex
To ensure their survival, animals exhibit a number of reward-directed behaviors, such as foraging for food or searching for mates. This suggests that a core set of brain regions may be shared by manyExpand
  • 248
  • 15
  • PDF
Age-related changes in midbrain dopaminergic regulation of the human reward system
The dopamine system, which plays a crucial role in reward processing, is particularly vulnerable to aging. Significant losses over a normal lifespan have been reported for dopamine receptors andExpand
  • 166
  • 14
  • PDF
Fractionating the neural substrate of cognitive control processes
  • J. Dreher, K. Berman
  • Psychology, Medicine
  • Proceedings of the National Academy of Sciences…
  • 21 October 2002
Psychological and neurobiological theories of cognitive control must account for flexible, seemless transitions among cognitive operations. When subjects switch between tasks, they must both inhibitExpand
  • 162
  • 12
  • PDF
Neural coding of distinct statistical properties of reward information in humans.
Brain processing of reward information is essential for complex functions such as learning and motivation. Recent primate electrophysiological studies using concepts from information, economic andExpand
  • 183
  • 11
  • PDF
The Roles of Timing and Task Order during Task Switching
The neural bases of the different processes involved in task switching remain poorly identified. Expand
  • 157
  • 11
  • PDF
Dissociating the roles of the rostral anterior cingulate and the lateral prefrontal cortices in performing two tasks simultaneously or successively.
A fundamental question about the nature of cognitive control is whether performing two tasks successively or simultaneously activates distinct brain regions. To investigate this question, we designedExpand
  • 159
  • 9
  • PDF