ABSTRACT
Hampson reports the relative efficacy of various pharmaceutical aids in sustaining cognitive abilities during sleep deprivation, using non-human primates. Sleep deprivation specifically augments memories of negative emotional images while impairing memories of positive emotional images, and this trend can only be reversed through Rapid Eye Movement sleep. It may be possible that decreased cognition during sleep deprivation is a function of interrupted concentration due to frequent microsleeps rather than to a general decline in cognitive abilities. Electroencephalographic or Near Infrared Spectroscopy (NIRS) devices that can automatically account for movement artifacts will further facilitate studies of cognition in freely interacting individuals, or in soldiers working together as a team. Dunn examines the utility of near NIRS as a portable, non-invasive measure for changes in brain activity during real-world events. Investigations into the effects of real-life stressors on neurophysiology and performance can reveal the difference between extreme and mild stress on performance.
