Numerical quantity affects time estimation in the suprasecond range

Hayashi, Masamichi J, Valli, Aino and Carlson, Synnöve (2013) Numerical quantity affects time estimation in the suprasecond range. Neuroscience Letters, 543. pp. 7-11. ISSN 0304-3940

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Of stimuli differing in the magnitude of their numerical information, the one with the larger numerosity is perceived to last longer than that with the smaller numerosity. This numerosity-time interaction is proposed to be due to a shared neural representation for numerical magnitude and time intervals in the parietal cortex. Neuroimaging studies of temporal processing suggest that subsecond and suprasecond intervals could be mediated by distinct neural substrates. However, whether the numerosity-time interaction occurs independently of the time intervals used in the tasks remains unknown. Here we show that numerical information interacts with time estimation in the suprasecond range in females, but not in males. Our results suggest that the numerical magnitude and suprasecond intervals have shared representations in the human brain, but the associative strength between these dimensions might be different between males and females.

Item Type: Article
Schools and Departments: School of Psychology > Psychology
Subjects: B Philosophy. Psychology. Religion > BF Psychology > BF0180 Experimental psychology
R Medicine > RC Internal medicine > RC0321 Neurosciences. Biological psychiatry. Neuropsychiatry
Depositing User: Dr Masamichi Hayashi
Date Deposited: 10 Mar 2014 08:14
Last Modified: 10 Mar 2014 08:14
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