Article reviewed: The novel brain neuropeptide, orexin-A, modulates the sleep-wake cycle of rats Article reviewed: The novel brain neuropeptide, orexin-A, modulates the sleep-wake cycle of rats Download Article reviewed: Sleep apnea and daytime sleepiness and fatigue: related to visceral obesity, insulin resistance, and hypercytokinemia Articles reviewed: 1. Sleep deprivation-induced reduction in cortical functional response to serial subtraction. 2. Altered brain response to verbal learning following sleep deprivation