Kimoon Kang1, Kyungjin You1, Minwhan Jung2, Hyunchool Shin1
(1. Department of Electronic Engineering, Soongsil University, Seoul156-743, Korea; 2. Institute for Medical Sciences, Ajou University School of Medicine, Suwon, Korea)
Abstract： The hippocampus is thought to contribute largely to memory processing and spatial navigation. Various research projects have shown evidence regarding these two crucial roles. However, many unknown functions of hippocampus remain. A great deal of research on the hippocampus is ongoing, but much of this research deals with single neuron, and little research has been conducted on what happens between neurons in hippocampus as they play these roles. In this paper, we intend to examine what changes hippocampal neurons undergo in response to a stimulus. Using an imbalanced, index of time-dependent Gini's coefficient, the firing balance between neurons during the moment in which a stimulus is received is examined. More importantly, the different firing balances are observed in reward situation. The result demonstrates the multi-neuron in hippocampus fires with balance for a while when the rat has reward. In addition, time-dependent Gini's coefficient is a feature that can verify what is not shown by using existing features.
Key words： hippocampus； multi-neuron firing inequality； time-dependent Gini's coefficient
CLD number： Q42 Document code： A
Article ID： 1674-8042(2013)04-0397-05 doi： 10.3969/j.issn.1674-8042.2013.04.020
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