Articles reviewed: 1. Sleep deprivation-induced reduction in cortical functional response to serial subtraction. 2. Altered brain response to verbal learning following sleep deprivation Articles reviewed: 1. Sleep deprivation-induced reduction in cortical functional response to serial subtraction. 2. Altered brain response to verbal learning following sleep deprivation Download Article reviewed: The novel brain neuropeptide, orexin-A, modulates the sleep-wake cycle of rats Compliance with CPAP in elderly patients with OSA