کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
918974 919864 2010 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reward magnitude effects on temporal discrimination
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب رفتاری
پیش نمایش صفحه اول مقاله
Reward magnitude effects on temporal discrimination
چکیده انگلیسی

Changes in reward magnitude or value have been reported to produce effects on timing behavior, which have been attributed to changes in the speed of an internal pacemaker in some instances and to attentional factors in other cases. The present experiments therefore aimed to clarify the effects of reward magnitude on timing processes. In Experiment 1, rats were trained to discriminate a short (2 s) vs. a long (8 s) signal followed by testing with intermediate durations. Then, the reward on short or long trials was increased from 1 to 4 pellets in separate groups. Experiment 2 measured the effect of different reward magnitudes associated with the short vs. long signals throughout training. Finally, Experiment 3 controlled for satiety effects during the reward magnitude manipulation phase. A general flattening of the psychophysical function was evident in all three experiments, suggesting that unequal reward magnitudes may disrupt attention to duration.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Learning and Motivation - Volume 41, Issue 2, May 2010, Pages 108–124
نویسندگان
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