All Articles by Sudip Ghosh, MD
Dr. Ghosh is a surgeon at the University of Manchester, UK and a medical writer.
Poor Memory in Sleep Deprivation Linked to “Not Seeing”
Maybe, finally we know, why cramming all night in the weeks before the test, isn't such a good strategy after all.New research suggests that poor memory as a result of sleep deprivation is not so much as a result of not getting enough sleep that will allow the visual memory to consolidate in the brain; it has more to do with a fundamental defect of the sleep-deprived brain failing to "see" patterns it expects to.
The Evidence for Neurologically Determined Anorexia Nervosa Behavioral Patterns
Recent research on behavioral characteristics displayed by anorexia nervosa (AN) and anorexia nervosa recovered (ANR) patients point strongly towards an anomalous pattern of activation of the pre-frontal cortex. Unlike in normal women, where food triggers off a reward system in the brain, AN and ANR (those who have recovered from anorexia nervosa) patients display an exaggerated startle effect, as part of an intrinsic defense reaction. In addition, they often salivate less, eat slower, and have a lower preference for fatty and sweet food, suggestive of a disruption in the central food-associated reward pathways.
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