Bøger af Leslie Montgomery

This project aims to develop EEG-based methods for detecting and monitoring mental fatigue. Mental fatigue poses a serious risk, even when performance is not apparently degraded. When such fatigue is associated with sustained performance of a single type of cognitive task it may be related to the metabolic energy required for sustained activation of cortical areas specialized for that task. The objective of this study was to adapt EEG to monitor cortical energy over a long period of performance of a cognitive task. Multielectrode event related potentials (ERPs) were collected every 15 minutes in nine subjects who performed a mental arithmetic task (algebraic sum of four randomly generated negative or positive digits). A new problem was presented on a computer screen 0.5 seconds after each response; some subjects endured for as long as three hours. ERPs were transformed to a quantitative measure of scalp electrical field energy. The average energy level at electrode P3 (near the left angular gyrus), 100-300 msec latency, was compared over the series of ERPs. For most subjects, scalp energy density at P3 gradually fell over the period of task performance and dramatically increased just before the subject was unable to continue the task. This neural response can be simulated for individual subjects using, a differential equation model in which it is assumed that the mental arithmetic task requires a commitment of metabolic energy that would otherwise be used for brain activities that are temporarily neglected. Their cumulative neglect eventually requires a reallocation of energy away from the mental arithmetic task.

In this favorable look at the faith of the nation's vice president, Montgomery details Pence's spiritual journey and how it shapes his role in everyday life. Features exclusive interviews and insightful commentary from friends, family, and colleagues.

Today's a big day for Unique. She and her mother will stop living out of their car and move into the shelter. It's a scary change for Unique who has already gone through a lot of ups and downs in her short life, including losing her Grandma Alice, having to move out of their apartment, and leaving her dog, Jake behind. Just when Unique thinks she'll never get a home of her own, her Mom teaches her the truth about the true meaning of home: it doesn't matter where you are, home is whoever you're holding onto in your heart.