Underlying Neurobiological and Neurocognitive Mechanisms of Impulsivity in Risk-Taking Behaviors

Computational and neurobiological mechanisms underlying cognitive flexibility.

The ability to switch between multiple tasks is central to flexible behavior. Although switching between tasks is readily accomplished, a well established consequence of task switching (TS) is behavioral slowing. The source of this switch cost and the contribution of cognitive control to its resolution remain highly controversial. Here, we tested whether proactive interference arising from memo...

Neurocognitive mechanisms underlying the experience of flow.

Recent theoretical and empirical work in cognitive science and neuroscience is brought into contact with the concept of the flow experience. After a brief exposition of brain function, the explicit-implicit distinction is applied to the effortless information processing that is so characteristic of the flow state. The explicit system is associated with the higher cognitive functions of the fron...

Neurocognitive mechanisms underlying identification of environmental risks.

Environmental risks threaten a large population and are more dreadful than personal risks that bring physical or health problems to individuals. To assess the neurocognitive processes involved in environmental risk identification, we recorded brain activities, using event-related potential (ERP) and functional magnetic resonance imaging (fMRI), from human adults while they identified risky and ...

Ovarian Hormones, Adhd, Risk-taking, & Impulsivity

Running head: ANXIETY SENSITIVTY AND RISK-TAKING BEHAVIORS Dowd 1 Anxiety Sensitivity and Risk-Taking Behaviors