Multivoxel pattern analysis reveals dissociations between subjective fear and its physiological correlates

In studies of anxiety and other affective disorders, objectively measured physiological responses have commonly been used as a proxy for measuring subjective experiences associated with pathology. However, this commonly adopted "biosignal" approach has recently been called into question on...

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Vydané v:Molecular psychiatry Ročník 25; číslo 10; s. 2342 - 2354
Hlavní autori: Taschereau-Dumouchel, Vincent, Kawato, Mitsuo, Lau, Hakwan
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: England Nature Publishing Group 01.10.2020
Predmet:
Adult
Affective disorders
Amygdala
Amygdala - physiology
Brain Mapping
Fear
Fear - physiology
Female
Functional magnetic resonance imaging
Humans
Learning algorithms
Machine Learning
Magnetic Resonance Imaging
Male
Neuroimaging
Physiology
Prefrontal cortex
Prefrontal Cortex - physiology
Young Adult
ISSN:1359-4184, 1476-5578, 1476-5578
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Shrnutí:In studies of anxiety and other affective disorders, objectively measured physiological responses have commonly been used as a proxy for measuring subjective experiences associated with pathology. However, this commonly adopted "biosignal" approach has recently been called into question on the grounds that subjective experiences and objective physiological responses may dissociate. We performed machine-learning-based analyses on functional magnetic resonance imaging (fMRI) data to assess this issue in the case of fear. Although subjective fear and objective physiological responses were correlated in general, the respective whole-brain multivoxel decoders for the two measures were different. Some key brain regions such as the amygdala and insula appear to be primarily involved in the prediction of physiological reactivity, whereas some regions previously associated with metacognition and conscious perception, including some areas in the prefrontal cortex, appear to be primarily predictive of the subjective experience of fear. The present findings are in support of the recent call for caution in assuming a one-to-one mapping between subjective sufferings and their putative biosignals, despite the clear advantages in the latter's being objectively and continuously measurable in physiological terms.
Bibliografia:ObjectType-Article-1
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ISSN:1359-4184
1476-5578
1476-5578
DOI:10.1038/s41380-019-0520-3