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. Author manuscript; available in PMC: 2015 Apr 1.
Published in final edited form as: Nat Rev Neurosci. 2014 Feb 26;15(4):264–278. doi: 10.1038/nrn3687

Figure 4. Firing rates of principal neurons are preserved across brain states and environments.

Figure 4

a The firing rates of the same CA1 pyramidal neurons in the rat during slow-wave sleep (SWS) and rapid eye movement (REM) sleep are correlated. b The firing rates of the same CA1 pyramidal neurons during exploration (RUN) and REM sleep are also correlated. c The firing rates of the same neurons in different mazes are correlated. d Firing-rate correlation of neurons during RUN in a novel maze and SWS in the home cage (before the maze session). e Firing-rate correlation in the mouse barrel cortex during background and object localization by whiskers. f Correlations of background and evoked firing rates in the lateral intraparietal (LIP) and parietal reach region (PRR) cortical areas of the macaque monkey. Part a is reproduced, with permission, from REF. 21 © (2001) National Academy of Sciences USA. Data in panels b–d from REF. 19. Data in part e from REF. 25. Data in part f courtesy of A. Berardino, New York University, USA, and B. Pesaran, New York University, USA.