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An intracranial EEG study of the neural dynamics of musical valence processing

Omigie, Diana; Dellacherie, Delphine; Hasboun, Dominique; George, Nathalie; Clement, Sylvain; Baulac, Michel; Adam, Claude and Samson, Severine. 2015. An intracranial EEG study of the neural dynamics of musical valence processing. Cerebral Cortex, 25(11), pp. 4038-4047. ISSN 1047-3211 [Article]

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Abstract or Description

The processing of valence is known to recruit the amygdala, orbitofrontal cortex and relevant sensory areas. However, how these regions interact remains unclear. We recorded cortical electrical activity from 7 epileptic patients implanted with depth electrodes for presurgical evaluation while they listened to positively and negatively valenced musical chords. Time frequency analysis suggested a specific role of the orbitofrontal cortex in the processing of positively valenced stimuli while, most importantly, Granger causality analysis revealed that the amygdala tends to drive both the orbitofrontal cortex and the auditory cortex in theta and alpha frequency bands, during the processing of valenced stimuli. Results from the current study show the amygdala to be a critical hub in the emotion processing network: specifically one that influences not only the higher order areas involved in the evaluation of the stimulus’s emotional value but also the sensory cortical areas involved in the processing of its low level acoustic features.

Item Type:

Article

Identification Number (DOI):

https://doi.org/10.1093/cercor/bhu118

Keywords:

amygdala, consonance, depth electrodes, ERPs, Granger causality

Departments, Centres and Research Units:

Psychology

Dates:

DateEvent
6 May 2014Accepted
5 June 2014Published Online
1 November 2015Published

Item ID:

23537

Date Deposited:

02 Jul 2018 10:17

Last Modified:

13 Jul 2018 04:05

Peer Reviewed:

Yes, this version has been peer-reviewed.

URI:

http://research.gold.ac.uk/id/eprint/23537

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