There are numerous and complex events taking place during brain maturation that provide the biologic underpinnings of learning and behavior. (MM)

The authors explore the division of labor between the basal ganglia-dopamine (BG-DA) system and the orbitofrontal cortex (OFC) in decision making. They show that a primitive neural network model of the BG-DA system slowly learns to make decisions on the basis of the relative probability of rewards but is not as sensitive to (a) recency or (b) the…

This review explores the cellular pathology associated with traumatic brain injury (TBI) and its relation to neurobehavioral outcomes, the relationship of brain imaging findings to underlying pathology, brain imaging techniques, various image analysis procedures and how they relate to neuropsychological testing, and the importance of brain imaging…

Discusses the recent change in direction in neuropsychological and neurolinguistic research from a focus on pathological factors to one that combines pathological and normal factors, the major focus being the motor and sensory processes. An attempt is made to outline the future course of this field. (CFM)