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This book contains 23 chapters expanded from the contributions of 46 researchers attending a conference held in Mexico City in March 1975. It is well edited and offers an excellent bibliography. There are few errors, although a minor one occurs on page 419 in explaining the sleep effect on memory.
The conference was interdisciplinary and its precedings are of immediate importance to researchers studying sleep and memory problems no matter what their basic field of interest. The concept that memory consolidation occurs in rapid eye movement sleep and that the locus coeruleus may play an