Waves of Change: Brain Sensitivity to Differential, not Absolute, Stimulus Intensity is Conserved Across Humans and Rats
文献类型：期刊论文
| 作者 | Somervail, R.2,4; Zhang, F.1,5; Novembre, G.4; Bufacchi, R. J.4; Guo, Y.4; Crepaldi, M.3; Hu, L.1,5 ; Iannetti, G. D.2,4
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| 刊名 | CEREBRAL CORTEX
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| 出版日期 | 2021-02-01 |
| 卷号 | 31期号:2页码:949-960 |
| ISSN号 | 1047-3211 |
| 关键词 | electrocorticography (ECoG) electroencephalography (EEG) behavioral relevance multispecies investigation saliency-detection |
| DOI | 10.1093/cercor/bhaa267 |
| 通讯作者 | Iannetti, G. D.(giandomenico.iannetti@iit.it) |
| 英文摘要 | Living in rapidly changing environments has shaped the mammalian brain toward high sensitivity to abrupt and intense sensory events-often signaling threats or affordances requiring swift reactions. Unsurprisingly, such events elicit a widespread electrocortical response (the vertex potential, VP), likely related to the preparation of appropriate behavioral reactions. Although the VP magnitude is largely determined by stimulus intensity, the relative contribution of the differential and absolute components of intensity remains unknown. Here, we dissociated the effects of these two components. We systematically varied the size of abrupt intensity increases embedded within continuous stimulation at different absolute intensities, while recording brain activity in humans (with scalp electroencephalography) and rats (with epidural electrocorticography). We obtained three main results. 1) VP magnitude largely depends on differential, and not absolute, stimulus intensity. This result held true, 2) for both auditory and somatosensory stimuli, indicating that sensitivity to differential intensity is supramodal, and 3) in both humans and rats, suggesting that sensitivity to abrupt intensity differentials is phylogenetically well-conserved. Altogether, the current results show that these large electrocortical responses are most sensitive to the detection of sensory changes that more likely signal the sudden appearance of novel objects or events in the environment. |
| 资助项目 | Wellcome Trust strategic award (COLL JLARAXR) ; European Research Council Consolidator Grant (PAINSTRAT) ; National Natural Science Foundation of China[31671141] ; National Natural Science Foundation of China[31822025] |
| WOS研究方向 | Neurosciences & Neurology |
| 语种 | 英语 |
| 出版者 | OXFORD UNIV PRESS INC |
| WOS记录号 | WOS:000646868100016 |
| 源URL | [http://ir.psych.ac.cn/handle/311026/39075]  |
| 专题 | 心理研究所_中国科学院心理健康重点实验室 |
| 通讯作者 | Iannetti, G. D. |
| 作者单位 | 1.CAS Key Lab Mental Hlth, Inst Psychol, Beijing 100101, Peoples R China 2.UCL, Dept Neurosci Physiol & Pharmacol, London WC1E 6BT, England 3.Ist Italiano Tecnol, Elect Design Lab, I-16152 Genoa, Italy 4.Ist Italiano Tecnol, Neurosci & Behav Lab, I-00161 Rome, Italy 5.Univ Chinese Acad Sci, Dept Psychol, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Somervail, R.,Zhang, F.,Novembre, G.,et al. Waves of Change: Brain Sensitivity to Differential, not Absolute, Stimulus Intensity is Conserved Across Humans and Rats[J]. CEREBRAL CORTEX,2021,31(2):949-960. |
| APA | Somervail, R..,Zhang, F..,Novembre, G..,Bufacchi, R. J..,Guo, Y..,...&Iannetti, G. D..(2021).Waves of Change: Brain Sensitivity to Differential, not Absolute, Stimulus Intensity is Conserved Across Humans and Rats.CEREBRAL CORTEX,31(2),949-960. |
| MLA | Somervail, R.,et al."Waves of Change: Brain Sensitivity to Differential, not Absolute, Stimulus Intensity is Conserved Across Humans and Rats".CEREBRAL CORTEX 31.2(2021):949-960. |
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来源：心理研究所
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