期刊
NEUROSCIENCE LETTERS
卷 438, 期 3, 页码 308-311出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.neulet.2008.04.051
关键词
time perception; numbers; magnitude
The representation of time, space and numbers are strictly linked in the primate's cognitive system. Here we show that merely looking at number symbols biases a temporal judgment on their duration depending upon the number's magnitude. In a first experiment, a group of healthy subjects was submitted to a time estimation task, requiring to judge whether the duration of a test stimulus was longer or shorter than that of a previous reference fixed stimulus (digit 5; duration 300 ms). Test stimuli were the digits 1, 5 and 9 ranging between 250 and 350 ms. The main results showed that temporal perception was biased according to the magnitude expressed by the digit: low digits (i.e. 1) leading to underestimation and high digits (i.e. 9) an overestimation of perceived duration. Control experiments showed that this result was consistent whatever digits were tested but not when letters of the alphabet were used. These findings argue for a functional interaction between time and numbers in the cognitive system. (c) 2008 Elsevier Ireland Ltd. All rights reserved.
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