Memory and Emotion: The Making of Lasting Memories (Anglais) Relié – 25 juin 2003
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I am standing backstage, closely watching my fellow actors in the play and waiting for the line that is a cue for my entry onstage. Lire la première page
Couverture | Copyright | Table des matières | Extrait | Index | Quatrième de couverture
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It is certainly a field in which people are interested. There are plenty of books with titles like _Boost Your Memory Now_, and the health stores do a fine business in herbal treatments that are supposed to make our memories better, with little evidence they work. There may be drugs that improve specific memories, however, or decrease their consolidation. Much of the research has been done on rats; evolutionarily, their brains wound up much like ours, just smaller and less complex. Rats can be trained to do such memory-requiring tasks as maze-running and then can be fiddled with in ways that humans cannot. Such drugs as strychnine, a central nervous system stimulant, can be given immediately _after_ maze training (that is, after all the learning exercise has been done), and the rats remember better what they learned during the training. Giving the strychnine hours after the training does nothing; the brains must have a consolidation phase during which the memory is laid down. Other experiments show that a drug like propranolol, used to lower blood pressure because it counteracts the body's store of epinephrine (also known as adrenaline), can counteract epinephrine's capacity to help consolidate memories. Giving propranolol after an emotional memory test blocks the enhancement boost that emotion gives to memory. This is not an academic exercise. Emergency room victims of trauma, if given propranolol, are less likely to have symptoms of post-traumatic stress disorder.
In such ways is memory yielding its secrets. In his review, McGaugh quite rightly refers to the important work of Susan Loftus that shows that false memories can be implanted, especially in children. If you go to a family reunion, it does not take long to learn that some people remember important events one way, and others another contradictory way, but the memories are really there, false or not. Implanting such seemingly real memories is the way that bogus therapists convince their patients that, say, they have received Satanic abuse as children. Eyewitness testimony has been shown to be terribly fallible, now that we have video cameras and DNA testing. But McGaugh and others have been able to discover some secrets about how generally reliable a servant memory is and how it is able to do its job. His volume allows us the pleasing exercise of picking up from a leader in the field just how much research has been accomplished, and of catching a bit of his enthusiasm for his work.
In Memory and Emotion, McGaugh reviews the different brain systems/regions involved in memory and how they operate with regard to time while recording our lives. But he also writes of how emotional arousal affects the strength of our memories and explores how memories can be influenced and completely false memories can be created. McGaugh attempts to make this literature interesting to the common reader; but his attempts are still very technical and he quickly shifts to the use of multiple acronyms. The book is saved by his great enthusiasm in writing about his own field of interest, and through his attempt to relate research to more common experiences. He writes about highly technical investigations giving only the very minimum in terms of methodology, while stating the major conclusions of these studies in a well organized and coherent manner.
While I would not recommend this book to a common readership, it is an impressively condensed volume of information for those who are interested in some of the more scientific aspects of memory and its function in our daily lives.
The book explains how epinephrine (adrenaline) relates to emotion.
The discussion on the differences in how short term memories are formed versus long term memories was very interesting.
This book also provides a mechanism to explain the results of the Naperville High School exercise and improved math scores research study.
One hears about the hippocampus and memory all the time.
I was happy that this book also explained a lot about the amygdala and other brain regions.
I am a neuroradiologist and author of the Straight A's at Stanford and on to Harvard.: How to use Whole Brain Learning to Optimize Study Skills. (Rogers Quintet.)book which is about college level study skills and how an understanding of the neurophysiology of memory can help a person to become a better student.