This book succinctly demonstrates how the brain's frontal lobe is specialized for directing voluntary action. Using data from monkeys, neurological patients, and normal subjects, the author presents a flow diagram of frontal lobe operations at the systems level. Topics include the various definitions of the term "voluntary" in a neuropsychological context, how the motor cortex provides a mechanism for the execution of voluntary behavioral actions, and how the premotor areas play a role in the selection of the movements to be performed. The text also shows how the prefrontal cortex is engaged...

It is plausible that evolution could have created the human skeleton, but it is hard to believe that it created the human mind. Yet, in six or seven million years evolution came up with Homo sapiens, a creature unlike anything the world had ever known. The mental gap between man and ape is immense, and yet evolution bridged that gap in so short a space of time. Since the brain is the organ of the mind, it is natural to assume that during the evolution of our hominid ancestors there were changes in the brain that can account for this gap. This book is a search for those changes. It is not...