NDLI: Temporal and spatial neural dynamics in the perception of basic emotions from complex scenes

Content Provider	PubMed Central
Author	Costa, Tommaso Franco, Cauda Manuella, Crini Tatu, Mona-karina Celeghin, Alessia Gelder, Beatrice De Marco, Tamietto
Copyright Year	2013
Abstract	The different temporal dynamics of emotions are critical to understand their evolutionary role in the regulation of interactions with the surrounding environment. Here, we investigated the temporal dynamics underlying the perception of four basic emotions from complex scenes varying in valence and arousal (fear, disgust, happiness and sadness) with the millisecond time resolution of Electroencephalography (EEG). Event-related potentials were computed and each emotion showed a specific temporal profile, as revealed by distinct time segments of significant differences from the neutral scenes. Fear perception elicited significant activity at the earliest time segments, followed by disgust, happiness and sadness. Moreover, fear, disgust and happiness were characterized by two time segments of significant activity, whereas sadness showed only one long-latency time segment of activity. Multidimensional scaling was used to assess the correspondence between neural temporal dynamics and the subjective experience elicited by the four emotions in a subsequent behavioral task. We found a high coherence between these two classes of data, indicating that psychological categories defining emotions have a close correspondence at the brain level in terms of neural temporal dynamics. Finally, we localized the brain regions of time-dependent activity for each emotion and time segment with the low-resolution brain electromagnetic tomography. Fear and disgust showed widely distributed activations, predominantly in the right hemisphere. Happiness activated a number of areas mostly in the left hemisphere, whereas sadness showed a limited number of active areas at late latency. The present findings indicate that the neural signature of basic emotions can emerge as the byproduct of dynamic spatiotemporal brain networks as investigated with millisecond-range resolution, rather than in time-independent areas involved uniquely in the processing one specific emotion.
Related Links	http://dx.doi.org/10.1093/scan/nst164
Ending Page	1703
Page Count	14
Starting Page	1690
File Format	PDF
ISSN	17495016
e-ISSN	17495024
Journal	Social Cognitive and Affective Neuroscience
Issue Number	11
Volume Number	9
Language	English
Publisher	Oxford University Press
Publisher Date	2014-11-01
Access Restriction	Open
Rights Holder	Oxford University Press
Subject Keyword	Experimental and Cognitive Psychology Cognitive Neuroscience Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Experimental and Cognitive Psychology Cognitive Neuroscience Medicine

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