Place Utility Fields
نویسندگان
چکیده
منابع مشابه
Discrete place fields of hippocampal formation interneurons.
The spike discharge of hippocampal excitatory principal cells, also called "place cells," is highly location specific, but the discharge of local inhibitory interneurons is thought to display relatively low spatial specificity. Whereas in other brain regions, such as sensory neocortex, the activity of interneurons is often exquisitely stimulus selective and directly determines the responses of ...
متن کاملEnsemble Place Codes in Hippocampus: CA1, CA3, and Dentate Gyrus Place Cells Have Multiple Place Fields in Large Environments
Previously we reported that the hippocampus place code must be an ensemble code because place cells in the CA1 region of hippocampus have multiple place fields in a more natural, larger-than-standard enclosure with stairs that permitted movements in 3-D. Here, we further investigated the nature of hippocampal place codes by characterizing the spatial firing properties of place cells in the CA1,...
متن کاملBounded Invariance and the Formation of Place Fields
One current explanation of the view independent representation of space by the place-cells of the hippocampus is that they arise out of the summation of view dependent Gaussians. This proposal assumes that visual representations show bounded invariance. Here we investigate whether a recently proposed visual encoding scheme called the temporal population code can provide such representations. Ou...
متن کاملHippocampal place fields: a neural code for episodic memory?
For over a half of a century, neuroscientists speculated about the neurophysiological mechanisms that support hippocampal-dependent learning and memory. About 35 years ago, O’Keefe and Dostrovsky (1971) published a report that ultimately resulted in a paradigm shift (Kuhn, 1970) in this field. Their report showed that hippocampal pyramidal neurons selectively discharge as animals traverse a cir...
متن کاملExperience-dependent, asymmetric expansion of hippocampal place fields.
Theories of sequence learning based on temporally asymmetric, Hebbian long-term potentiation predict that during route learning the spatial firing distributions of hippocampal neurons should enlarge in a direction opposite to the animal's movement. On a route AB, increased synaptic drive from cells representing A would cause cells representing B to fire earlier and more robustly. These effects ...
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ژورنال
عنوان ژورنال: Geographical Analysis
سال: 2010
ISSN: 0016-7363
DOI: 10.1111/j.1538-4632.1982.tb00051.x