期刊
JOURNAL OF NEUROSCIENCE
卷 41, 期 43, 页码 8917-8927出版社
SOC NEUROSCIENCE
DOI: 10.1523/JNEUROSCI.3164-20.2021
关键词
attenuation; cognition; connectivity; fMRI; intraparietal sulcus; numerosity
资金
- Bertarelli Foundation [532024]
- Swiss National Science Foundation [3100A0-112493]
- National Center of Competence in Research Synapsy -The Synaptic Bases of Mental Diseases [51NF40-185897]
- European Research Council under the European Union [803122]
- European Research Council (ERC) [803122] Funding Source: European Research Council (ERC)
This study found that self-generated stimuli are attenuated in numerosity estimations compared to externally generated stimuli, showing a larger underestimation for self-generated words. While the ability to track errors about numerosity estimations was similar across conditions, the linear relationship between reported and actual number of words was stronger for self-generated words. Neuroimaging results revealed increased functional connectivity in specific brain regions during numerosity underestimation for self-generated words.
Previous studies have shown that self-generated stimuli in auditory, visual, and somatosensory domains are attenuated, producing decreased behavioral and neural responses compared with the same stimuli that are externally generated. Yet, whether such attenuation also occurs for higher-level cognitive functions beyond sensorimotor processing remains unknown. In this study, we assessed whether cognitive functions such as numerosity estimations are subject to attenuation in 56 healthy participants (32 women). We designed a task allowing the controlled comparison of numerosity estimations for self-generated (active condition) and externally generated (passive condition) words. Our behavioral results showed a larger underestimation of self-generated compared with externally generated words, suggesting that numerosity estimations for self-generated words are attenuated. Moreover, the linear relationship between the reported and actual number of words was stronger for self-generated words, although the ability to track errors about numerosity estimations was similar across conditions. Neuroimaging results revealed that numerosity underestimation involved increased functional connectivity between the right intraparietal sulcus and an extended network (bilateral supplementary motor area, left inferior parietal lobule, and left superior temporal gyrus) when estimating the number of self-generated versus externally generated words. We interpret our results in light of two models of attenuation and discuss their perceptual versus cognitive origins.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据