Memorizing a series of facts is one thing, understanding the big picture is quite another. Now a new study demonstrates that// relational memory -- the ability to make logical "big picture" inferences from disparate pieces of information – is dependent on taking a break from studies and learning, and even more important, getting a good night's sleep.
Led by researchers at Beth Israel Deaconess Medical Center (BIDMC) and Brigham and Women's Hospital (BWH), the findings appear on-line in today's Early Edition of the Proceedings of the National Academy of Sciences (PNAS).
"Relational memory is a bit like solving a jigsaw puzzle," explains senior author Matthew Walker, PhD, Director of the Sleep and Neuroimaging Laboratory at BIDMC and Assistant Professor of Psychology at Harvard Medical School (HMS). "It's not enough to have all the puzzle pieces – you also have to understand how they fit together."
Adds lead author Jeffrey Ellenbogen, MD, a postdoctoral fellow at HMS and sleep neurologist at BWH, "People often assume that we know all of what we know because we learned it directly. In fact, that's only partly true. We actually learn individual bits of information and then apply them in novel, flexible ways."
For instance, if a person learns that A is greater than B and B is greater than C, then he or she knows those two facts. But embedded within those is a third fact – A is greater than C – which can be deduced by a process called transitive inference, the type of relational memory that the researchers examined in this study.
Earlier research by Walker and colleagues had shown that sleep actively improves task-oriented "procedural memory" – for example, learning to talk, to coordinate limbs, musicianship, or to play sports. Because relational memory is fundamental to knowledge and learning, Walker and Ellenbogen decided to explore how and when this "inferential" knowledge emerges, hypothesizing that it devePage: 1 2 3 Related medicine news :1
. Understanding The Predictors Of Prostate Cancer 2
. Understanding Restless Legs Syndrome3
. Understanding Lung Cancer Metastasis 4
. Understanding The Link Between Hormone Replacement and Respiratory Disease5
. Understanding The Risks Of Hormone Therapy6
. Understanding The Link Between Metabolic Syndrome And Drinking Patterns7
. A Better Understanding Of The Brain Network 8
. Understanding The Predictor’s Of Alzheimer’s Diseae9
. Understanding The Harmful Effects Of Radiation Exposure 10
. Understanding The Origin Of Tumors 11
. Understanding Insulin Resistance