Spatial Firing Properties of Hippocampal CA1 Populations in an Environment Containing Two Visually Identical Regions

William E. Skaggs; Bruce L. McNaughton

doi:10.1523/JNEUROSCI.18-20-08455.1998

Article Information

DOI

https://doi.org/10.1523/JNEUROSCI.18-20-08455.1998

PubMed

9763488

Published By

Society for Neuroscience

History

Received April 16, 1998
Revision received July 23, 1998
Accepted July 27, 1998
First published October 15, 1998.

Version of record published October 15, 1998.

Author Information

William E. Skaggs and
Bruce L. McNaughton

¹Arizona Research Laboratories, Division of Neural Systems, Memory and Aging, University of Arizona, Tucson, Arizona 85724

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Author contributions

Disclosures

Received April 16, 1998.
Revision received July 23, 1998.
Accepted July 27, 1998.

This research was supported by National Institutes of Health Grant NS20331 and the McDonnell and Pew Foundations. We thank Karen Reinke for assistance in running experiments, Kathy Dillon, Keith Stengel, and Vince Pawlowski for technical assistance, and Alexei Samsonovich for helpful discussions.
Correspondence should be addressed to Dr. William Skaggs at his present address: 446 Crawford Hall, Department of Neuroscience and Center for the Neural Basis of Cognition, University of Pittsburgh, Pittsburgh, PA 15260.

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	Abstract	Full	Pdf
Jan 1999	6	12	6
Feb 1999	3	10	8
Mar 1999	8	12	10
Dec 1999	1	13	5
Total 1999	18	47	29
Jan 2000	4	8	5
Feb 2000	2	16	7
Mar 2000	2	15	8
Apr 2000	6	18	6
May 2000	1	12	10
Jun 2000	0	3	4
Jul 2000	4	10	4
Aug 2000	0	12	10
Sep 2000	5	6	1
Oct 2000	3	9	5
Nov 2000	2	8	5
Dec 2000	5	14	8
Total 2000	34	131	73
Jan 2001	3	8	6
Feb 2001	3	15	11
Mar 2001	5	17	8
Apr 2001	3	13	11
May 2001	1	8	8
Jun 2001	4	6	8
Jul 2001	5	15	11
Aug 2001	2	8	6
Sep 2001	4	10	12
Oct 2001	1	9	8
Nov 2001	3	7	4
Dec 2001	0	6	6
Total 2001	34	122	99
Jan 2002	2	9	6
Feb 2002	3	14	12
Mar 2002	4	8	8
Apr 2002	4	12	10
May 2002	1	8	8
Jun 2002	1	5	8
Jul 2002	2	7	10
Aug 2002	2	4	4
Sep 2002	1	4	5
Oct 2002	6	16	13
Nov 2002	1	5	3
Dec 2002	2	5	2
Total 2002	29	97	89
Jan 2003	1	5	2
Feb 2003	1	12	17
Mar 2003	8	7	7
Apr 2003	2	17	24
May 2003	2	6	6
Jun 2003	1	9	8
Jul 2003	6	10	5
Aug 2003	11	10	7
Sep 2003	11	17	11
Oct 2003	16	12	15
Nov 2003	19	17	28
Dec 2003	14	17	12
Total 2003	92	139	142
Jan 2004	15	14	9
Feb 2004	12	7	10
Mar 2004	16	15	13
Apr 2004	12	16	18
May 2004	15	26	15
Jun 2004	8	13	6
Jul 2004	7	13	11
Aug 2004	28	19	7
Sep 2004	27	25	9
Oct 2004	11	16	11
Nov 2004	4	24	12
Dec 2004	20	40	17
Total 2004	175	228	138
Jan 2005	8	19	2
Feb 2005	9	31	17
Mar 2005	23	15	11
Apr 2005	5	18	27
May 2005	4	23	16
Jun 2005	3	13	16
Jul 2005	2	14	7
Aug 2005	5	15	16
Sep 2005	8	11	8
Oct 2005	5	15	6
Nov 2005	8	21	16
Dec 2005	9	19	9
Total 2005	89	214	151
Jan 2006	7	16	10
Feb 2006	7	17	9
Mar 2006	6	21	12
Apr 2006	10	10	9
May 2006	4	15	9
Jun 2006	4	12	14
Jul 2006	4	7	8
Aug 2006	2	10	6
Sep 2006	7	8	8
Oct 2006	7	15	7
Nov 2006	11	12	11
Dec 2006	3	9	6
Total 2006	72	152	109
Jan 2007	5	4	6
Feb 2007	5	8	8
Mar 2007	9	10	7
Apr 2007	1	8	6
May 2007	7	14	11
Jun 2007	6	6	12
Jul 2007	8	4	8
Aug 2007	3	3	6
Sep 2007	4	4	6
Oct 2007	7	4	6
Nov 2007	1	9	20
Dec 2007	3	8	6
Total 2007	59	82	102
Jan 2008	4	3	7
Feb 2008	4	1	1
Mar 2008	3	3	5
Apr 2008	8	6	4
May 2008	7	5	6
Jun 2008	7	5	9
Jul 2008	7	6	9
Aug 2008	4	5	5
Sep 2008	5	14	14
Oct 2008	9	12	11
Nov 2008	7	12	6
Dec 2008	2	3	2
Total 2008	67	75	79
Jan 2009	4	7	14
Feb 2009	10	5	8
Mar 2009	3	9	2
Apr 2009	3	4	6
May 2009	11	10	5
Jun 2009	5	4	5
Jul 2009	8	5	7
Aug 2009	1	4	1
Sep 2009	7	9	7
Oct 2009	0	2	2
Nov 2009	6	6	10
Dec 2009	3	6	4
Total 2009	61	71	71
Jan 2010	2	4	10
Feb 2010	6	11	11
Mar 2010	5	1	3
Apr 2010	9	7	10
May 2010	7	8	4
Jun 2010	4	7	3
Jul 2010	1	10	9
Aug 2010	3	4	4
Sep 2010	4	3	7
Oct 2010	5	13	7
Nov 2010	12	6	7
Dec 2010	8	5	5
Total 2010	66	79	80
Jan 2011	4	2	9
Feb 2011	7	8	5
Mar 2011	9	8	12
Apr 2011	3	9	8
May 2011	7	6	10
Jun 2011	3	5	8
Jul 2011	4	1	6
Aug 2011	12	4	13
Sep 2011	5	3	5
Oct 2011	6	9	17
Nov 2011	19	7	18
Dec 2011	11	8	6
Total 2011	90	70	117
Jan 2012	20	2	6
Feb 2012	6	8	13
Mar 2012	7	9	7
Apr 2012	10	8	5
May 2012	28	15	12
Jun 2012	6	5	6
Jul 2012	5	12	9
Aug 2012	6	8	8
Sep 2012	5	6	5
Oct 2012	8	9	10
Nov 2012	23	3	7
Dec 2012	32	7	13
Total 2012	156	92	101
Jan 2013	9	5	10
Feb 2013	13	6	3
Mar 2013	11	10	7
Apr 2013	12	9	10
May 2013	12	5	8
Jun 2013	12	5	10
Jul 2013	11	4	9
Aug 2013	5	5	11
Sep 2013	8	8	7
Oct 2013	17	6	20
Nov 2013	8	3	8
Dec 2013	5	1	10
Total 2013	123	67	113
Jan 2014	9	3	19
Feb 2014	5	7	12
Mar 2014	12	1	18
Apr 2014	10	9	19
May 2014	9	6	6
Jun 2014	5	5	7
Jul 2014	11	9	10
Aug 2014	4	7	3
Sep 2014	3	7	12
Oct 2014	10	16	17
Nov 2014	8	8	22
Dec 2014	13	3	13
Total 2014	99	81	158
Jan 2015	14	9	8
Feb 2015	8	8	3
Mar 2015	8	12	5
Apr 2015	9	14	9
May 2015	22	18	15
Jun 2015	5	14	10
Jul 2015	3	8	7
Aug 2015	57	4	9
Sep 2015	7	14	19
Oct 2015	0	2	17
Nov 2015	9	3	9
Dec 2015	13	4	14
Total 2015	155	110	125
Jan 2016	11	11	13
Feb 2016	14	29	17
Mar 2016	14	9	15
Apr 2016	5	9	8
May 2016	15	9	15
Jun 2016	9	11	20
Jul 2016	5	6	9
Aug 2016	12	13	11
Sep 2016	12	9	6
Oct 2016	8	8	3
Nov 2016	10	31	18
Dec 2016	2	13	8
Total 2016	117	158	143
Jan 2017	2	10	2
Feb 2017	0	7	3
Mar 2017	3	26	9
Apr 2017	5	10	8
May 2017	2	53	12
Jun 2017	2	19	10
Jul 2017	0	26	15
Aug 2017	1	18	6
Sep 2017	7	13	9
Oct 2017	0	20	7
Nov 2017	4	30	23
Dec 2017	2	8	6
Total 2017	28	240	110
Jan 2018	0	14	12
Feb 2018	9	14	13
Mar 2018	7	17	12
Apr 2018	6	22	10
May 2018	0	22	5
Jun 2018	8	29	7
Jul 2018	4	14	9
Aug 2018	5	18	13
Sep 2018	0	19	5
Oct 2018	4	19	6
Nov 2018	1	25	7
Dec 2018	2	20	12
Total 2018	46	233	111
Jan 2019	3	21	16
Feb 2019	4	21	13
Mar 2019	6	25	11
Apr 2019	3	24	21
May 2019	2	23	14
Jun 2019	3	20	15
Jul 2019	4	21	15
Aug 2019	1	16	17
Sep 2019	2	56	10
Oct 2019	7	87	10
Nov 2019	3	41	15
Dec 2019	5	19	12
Total 2019	43	374	169
Jan 2020	1	38	9
Feb 2020	1	30	8
Mar 2020	5	20	11
Apr 2020	0	37	5
May 2020	6	56	14
Jun 2020	4	17	16
Jul 2020	2	18	3
Aug 2020	3	21	3
Sep 2020	6	46	15
Oct 2020	1	42	17
Nov 2020	6	43	14
Dec 2020	4	43	17
Total 2020	39	411	132
Jan 2021	4	44	18
Feb 2021	3	59	26
Mar 2021	12	45	29
Apr 2021	3	25	13
Total 2021	22	173	86
Total	1714	3446	2527