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ID 45225
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別タイトル
Study of Response Latencies of Interval Bisection Task in Rats
著者
中村 勇太
坂田 省吾 大学院総合科学研究科 広大研究者総覧
キーワード
timing
Interval bisection task
response latency
rats
NDC
心理学
抄録(英)
Interval timing, whose range is from a second to several minutes among the sense with respect to time, is related with feeding behavior, decision making and time estimation of animals. In this study, we used interval bisection task, which is a method for examining this interval timing quantitatively. First, rats learned left and right lever pressing associated with the tone stimuli of 2 seconds and 8 seconds for each. Second, probe stimulus tones (e. g. 2.5, 3.2, 4, 5, 6.4 seconds) were presented, and we observed which lever rats selected. When the proportion of the lever pressing associated with the 8 seconds tone is 50%, the point of subjective equality (PSE) can be obtained. The PSE is an indicator of decision making in time perception. In order to investigate whether the difference in the physical properties of the stimulus affects the time perception, we used two kinds of tones, a continuous tone and a 4 Hz pulse tone. The results suggest that the difference in physical properties between continuous tone and 4 Hz pulse tone does not affect time perception. As another index, response latency of lever pressing for each tone presented in the task was calculated. As a result, at the testing stage, a peak in a distribution of response latency was around 3.2 seconds or 4 seconds of probe stimulus. The durations of the peak was similar to PSE. From these results, it was suggested that response latency is an important indicator in decision making of which lever selected.
掲載誌名
広島大学大学院総合科学研究科紀要. I, 人間科学研究
12巻
開始ページ
27
終了ページ
37
出版年月日
2017-12-31
出版者
広島大学大学院総合科学研究科
ISSN
1881-7688
NCID
言語
日本語
NII資源タイプ
紀要論文
広大資料タイプ
学内刊行物(紀要等)
DCMIタイプ
text
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application/pdf
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publisher
権利情報
掲載された論文,研究ノート,要旨などの出版権・著作権は広島大学大学院総合科学研究科に帰属する。
Copyright (c) 2017 Graduate School of Integrated Arts and Sciences, Hiroshima University, All rights reserved.
部局名
総合科学研究科
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