Are memories just ripples in time? Michael Gross  Current Biology  Volume 23, Issue 17, Pages R734-R736 (September 2013) DOI: 10.1016/j.cub.2013.08.047 Copyright © 2013 Terms and Conditions

Present tense: The case of H. M Present tense: The case of H.M., a patient who lost the ability to record new memories after removal of his hippocampi, provided key insights into the importance of the hippocampus for memory and is the focus of a new book by Suzanne Corkin. (Photo: courtesy of Allen Lane Publishers.) Current Biology 2013 23, R734-R736DOI: (10.1016/j.cub.2013.08.047) Copyright © 2013 Terms and Conditions

Sea horses: The hippocampus, a small brain structure named after its similarity to sea horses. Humans have two hippocampi, which are located in the medial temporal lobes. It is known to have a crucial role in the recording and replay of episodic memory, but the precise mechanisms of this function have remained elusive. (Photo: Wikipedia, Professor Laszlo Seress.) Current Biology 2013 23, R734-R736DOI: (10.1016/j.cub.2013.08.047) Copyright © 2013 Terms and Conditions

Ripple effect: Short bursts of electrical impulses known as sharp-wave ripples may, according to one hypothesis, be the key to the function of the hippocampus in consolidating memories. Current Biology 2013 23, R734-R736DOI: (10.1016/j.cub.2013.08.047) Copyright © 2013 Terms and Conditions