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ID 187
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別タイトル
Shaping of interval timing behavior by the peak procedure and response temporal distribution
著者
西村 優基
高橋 絵理佳
キーワード
mouse
rat
timing
behavior
peak procedure
peak time
NDC
生物科学・一般生物学
抄録(英)
Two experiments examined interval timing behavior in mice and rats. In the first experiment, subjectswere mice, and in the second one they were rats. The animals were trained using the peak procedure that was avariant of a discrete trial fixed interval (DT-FI) schedule. On food trails, the first lever press response more than30-s after tone stimulus onset terminated the stimulus and presented a food pellet. On empty trials, the tonestimulus lasted for 90-s with no food. The temporal distributions of responses in mice and rats were calculatedby averaging responses over 180 empty trials. Training progressed in both animals in a way similar to Gaussianfunction curve. Peak time, which shows the peak of regression curve fitting the Gaussian function, correspondedto 30-s with wide variability in both experiments. This proved to be a good index to the interval timing behavior.In the second experiment, we considered various regression fitting variables, especially concerning the numberof trials. Temporal distribution seems to be affected by various factors including individual differences intraining sessions.
掲載誌名
広島大学総合科学部紀要. IV, 理系編
29巻
開始ページ
63
終了ページ
75
出版年月日
2003-12
出版者
広島大学総合科学部
寄与者
国立情報学研究所
ISSN
1340-8364
NCID
SelfDOI
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
フォーマット
application/pdf
著者版フラグ
publisher
部局名
総合科学研究科
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