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. 2014 Apr 3;18(2):103–108. doi: 10.4196/kjpp.2014.18.2.103

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Copyright © 2014 The Korean Physiological Society and The Korean Society of Pharmacology

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 3 — Behavioral data for the initial ICSS shaping phases. The number of lever-pulls (triangle) and consequent rewards (circle) are depicted for the rat RS007 (A), RS008 (B), and RS009 (C) for consecutive three sessions (Day1 to 3). Numbers in the parenthesis indicates predetermined inter-trial intervals and stimulation current intensity. When the parameters are modified, it is denoted by the dotted vertical line. The number of rewards that is larger than the number of lever-pulls indicates the delivery of free-reward by the experimenter.