A functional role for adult hippocampal neurogenesis in spatial pattern separation.

A functional role for adult hippocampal neurogenesis in spatial pattern separation.
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DOI:
10.1126/science.1173215
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发表时间:
2009-07-10
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Bussey TJ
Bussey TJ
中科院分区:
其他
文献类型:
--
作者:
Clelland CD;Choi M;Romberg C;Clemenson GD Jr;Fragniere A;Tyers P;Jessberger S;Saksida LM;Barker RA;Gage FH;Bussey TJ

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The dentate gyrus (DG) of the mammalian hippocampus is hypothesized to mediate pattern separation—the formation of distinct and orthogonal representations of mnemonic information—and also undergoes neurogenesis throughout life. How neurogenesis contributes to hippocampal function is largely unknown. Using adult mice in which hippocampal neurogenesis was ablated, we found specific impairments in spatial discrimination with two behavioral assays: (i) a spatial navigation radial arm maze task and (ii) a spatial, but non-navigable, task in the mouse touch screen. Mice with ablated neurogenesis were impaired when stimuli were presented with little spatial separation, but not when stimuli were more widely separated in space. Thus, newborn neurons may be necessary for normal pattern separation function in the DG of adult mice.
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