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. 2010 Apr 16;133(5):1380–1390. doi: 10.1093/brain/awq070

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© The Author(s) 2010. Published by Oxford University Press on behalf of Brain.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.5), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Ripples and fast ripples detected by spike thresholding. (A) Typical ripple event from contralateral hippocampus. (B) Typical fast ripple event from ipsilateral hippocampus. (C) The incidence of ripples per 10 min did not differ between hippocampi. (D) The incidence of fast ripples per 10 min was significantly greater in the ipsilateral hippocampus [P < 0.05, Mann–Whitney test, (*)]. (E) in all cases the incidence of fast ripples was greater in the ipsilateral hippocampus (R), and in 5 of 10 animals was zero in the contralateral (L).