Intertrial variability in the premotor cortex accounts for individual differences in peripersonal space

Francesca Ferri, Marcello Costantini, Zirui Huang, Mauro Gianni Perrucci, Antonio Ferretti, Gian Luca Romani, Georg Northoff

研究成果: 雜誌貢獻文章同行評審

39 引文 斯高帕斯(Scopus)

摘要

We live in a dynamic environment, constantly confronted with approaching objects that we may either avoid or be forced to address. A multisensory and sensorimotor interface, the peripersonal space (PPS), mediates every physical interaction between our body and the environment. Behavioral investigations show high variability in the extension of PPS across individuals, but there is a lack of evidence on the neural underpinnings of these large individual differences. Here, we used approaching auditory stimuli and fMRI to capture the individual boundary of PPS and examine its neural underpinnings. Precisely, we tested the hypothesis that intertrial variability (ITV) in brain regions coding PPS predicts individual differences of its boundary at the behavioral level. Selectively in the premotor cortex, we found that ITV, rather than trial-averaged amplitude, of BOLD responses to far rather than near dynamic stimuli predicts the individual extension of PPS. Our results provide the first empirical support for the relevance of ITV of brain responses for individual differences in human behavior.

原文英語
頁(從 - 到)16328-16339
頁數12
期刊Journal of Neuroscience
35
發行號50
DOIs
出版狀態已發佈 - 十二月 16 2015
對外發佈

ASJC Scopus subject areas

  • 神經科學 (全部)

指紋

深入研究「Intertrial variability in the premotor cortex accounts for individual differences in peripersonal space」主題。共同形成了獨特的指紋。

引用此