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ID 187
file
title alternative
Shaping of interval timing behavior by the peak procedure and response temporal distribution
creator
Nishimura, Yuuki
Takahashi, Erika
subject
mouse
rat
timing
behavior
peak procedure
peak time
NDC
Biology
abstract
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.
journal title
Memoirs of the Faculty of Integrated Arts and Sciences, Hiroshima University. IV, Science reports
volume
Volume 29
start page
63
end page
75
date of issued
2003-12
publisher
広島大学総合科学部
contributor
国立情報学研究所
issn
1340-8364
ncid
SelfDOI
language
jpn
nii type
Departmental Bulletin Paper
HU type
Departmental Bulletin Papers
DCMI type
text
format
application/pdf
text version
publisher
department
Graduate School of Integrated Arts and Sciences
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