Reduction of theta rhythm dissociates grid cell spatial periodicity from directional tuning.
Reduction of theta rhythm dissociates grid cell spatial periodicity from directional tuning.
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DOI:
10.1126/science.1201652
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发表时间:
2011-04-29
期刊:
影响因子:
--
通讯作者:
Hasselmo ME
中科院分区:
文献类型:
--
作者:
Brandon MP;Bogaard AR;Libby CP;Connerney MA;Gupta K;Hasselmo ME
Grid cells recorded in medial entorhinal cortex of freely moving rats exhibit firing at regular spatial locations and temporal modulation with theta rhythm oscillations (4–11 Hz). We analyzed grid cell spatial coding during reduction of network theta rhythm oscillations caused by medial septum (MS) inactivation with muscimol. During MS inactivation, grid cells lost their spatial periodicity, whereas head direction cells maintained their selectivity. Conjunctive grid-by-head-direction cells lost grid cell spatial periodicity but retained head direction specificity. All cells showed reduced rhythmicity in autocorrelations and cross-correlations. This supports the hypothesis that spatial coding by grid cells requires theta oscillations, and dissociates the mechanisms underlying generation of entorhinal grid cell periodicity and head direction selectivity.
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影响因子:
56.9
作者:
Fyhn, M;Molden, S;Moser, MB
通讯作者:
Moser, MB
影响因子:
56.9
作者:
Koenig, Julie;Linder, Ashley N.;Leutgeb, Stefan
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Leutgeb, Stefan
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56.9
作者:
Solstad, Trygve;Boccara, Charlotte N.;Moser, Edvard I.
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影响因子:
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通讯作者:
GRAY, JA
DOI:
10.1523/jneurosci.1319-09.2009
发表时间:
2009-08-05
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Lever C;Burton S;Jeewajee A;O'Keefe J;Burgess N
通讯作者:
Burgess N