How do you perceive threat? It's all in your pattern of brain activity.
Whether subtle differences in the emotional context during threat perception can be detected by multi-voxel pattern analysis (MVPA) remains a topic of debate. To investigate this question, we compared the ability of pattern recognition analysis to discriminate between patterns of brain activity to a...
| Publicado en: | Brain Imaging & Behavior Vol. 14; no. 6; pp. 2251 - 2267 |
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| Autores principales: | , , , , , , , , |
| Formato: | Journal Article |
| Publicado: |
Springer Nature
Dec2020
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=146869373&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 146869373 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 19317557 3GSC jtl: Brain Imaging & Behavior issn: 19317557 maglogo: N pubinfo: dt: Dec2020 vid: 14 iid: 6 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 146869373 144778959 146869373 NLM31446554 10.1007/s11682-019-00177-6 NLM31446554 146869373 ppf: 2251 ppct: 16 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: How do you perceive threat? It's all in your pattern of brain activity. aug: au: Fernandes, Orlando Portugal, Liana Catrina Lima Alves, Rita de Cássia S. Arruda-Sanchez, Tiago Volchan, Eliane Pereira, Mirtes Garcia Mourão-Miranda, Janaina Oliveira, Letícia Fernandes, Orlando Jr affil: Laboratory of Neuroimaging and Psychophysiology, Department of Radiology, Faculty of Medicine, Federal University of Rio de Janeiro, 255 Rodolpho Paulo Rocco st., Ilha do Fundão, 21941-590, Rio de Janeiro, RJ, Brazil sug: subj: Brain Physiology Brain Fear Emotions Information Science Image Interpretation, Computer Assisted Data Analysis, Statistical Regression Brain Mapping ab: Whether subtle differences in the emotional context during threat perception can be detected by multi-voxel pattern analysis (MVPA) remains a topic of debate. To investigate this question, we compared the ability of pattern recognition analysis to discriminate between patterns of brain activity to a threatening versus a physically paired neutral stimulus in two different emotional contexts (the stimulus being directed towards or away from the viewer). The directionality of the stimuli is known to be an important factor in activating different defensive responses. Using multiple kernel learning (MKL) classification models, we accurately discriminated patterns of brain activation to threat versus neutral stimuli in the directed towards context but not during the directed away context. Furthermore, we investigated whether it was possible to decode an individual's subjective threat perception from patterns of whole-brain activity to threatening stimuli in the different emotional contexts using MKL regression models. Interestingly, we were able to accurately predict the subjective threat perception index from the pattern of brain activation to threat only during the directed away context. These results show that subtle differences in the emotional context during threat perception can be detected by MVPA. In the directed towards context, the threat perception was more intense, potentially producing more homogeneous patterns of brain activation across individuals. In the directed away context, the threat perception was relatively less intense and more variable across individuals, enabling the regression model to successfully capture the individual differences and predict the subjective threat perception. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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