Discrete Neural Signatures of Basic Emotions.


Categorical models of emotions posit neurally and physiologically distinct human basic emotions. We tested this assumption by using multivariate pattern analysis (MVPA) to classify brain activity patterns of 6 basic emotions (disgust, fear, happiness, sadness, anger, and surprise) in 3 experiments. Emotions were induced with short movies or mental imagery during functional magnetic resonance imaging. MVPA accurately classified emotions induced by both methods, and the classification generalized from one induction condition to another and across individuals. Brain regions contributing most to the classification accuracy included medial and inferior lateral prefrontal cortices, frontal pole, precentral and postcentral gyri, precuneus, and posterior cingulate cortex. Thus, specific neural signatures across these regions hold representations of different emotional states in multimodal fashion, independently of how the emotions are induced. Similarity of subjective experiences between emotions was associated with similarity of neural patterns for the same emotions, suggesting a direct link between activity in these brain regions and the subjective emotional experience.

DOI: 10.1093/cercor/bhv086

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@article{Saarimki2016DiscreteNS, title={Discrete Neural Signatures of Basic Emotions.}, author={Heini Saarim{\"a}ki and Athanasios Gotsopoulos and Iiro P. J{\"a}{\"a}skel{\"a}inen and Jouko Lampinen and Patrik Vuilleumier and Riitta Hari and Mikko Sams and Lauri Nummenmaa}, journal={Cerebral cortex}, year={2016}, volume={26 6}, pages={2563-2573} }