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Affective and sensorimotor components of emotional prosody generation

Kell, Christian A.
Published in Journal of Neuroscience. 2013, vol. 33, no. 4, p. 1640-1650
Abstract Although advances have been made regarding how the brain perceives emotional prosody, the neural bases involved in the generation of affective prosody remain unclear and debated. Two models have been forged on the basis of clinical observations: a first model proposes that the right hemisphere sustains production and comprehension of emotional prosody, while a second model proposes that emotional prosody relies heavily on basal ganglia. Here, we tested their predictions in two functional magnetic resonance imaging experiments that used a cue-target paradigm, which allows distinguishing affective from sensorimotor aspects of emotional prosody generation. Both experiments show that when participants prepare for emotional prosody, bilateral ventral striatum is specifically activated and connected to temporal poles and anterior insula, regions in which lesions frequently cause dysprosody. The bilateral dorsal striatum is more sensitive to cognitive and motor aspects of emotional prosody preparation and production and is more strongly connected to the sensorimotor speech network compared with the ventral striatum. Right lateralization during increased prosodic processing is confined to the posterior superior temporal sulcus, a region previously associated with perception of emotional prosody. Our data thus provide physiological evidence supporting both models and suggest that bilateral basal ganglia are involved in modulating motor behavior as a function of affective state. Right lateralization of cortical regions mobilized for prosody control could point to efficient processing of slowly changing acoustic speech parameters in the ventral stream and thus identify sensorimotor processing as an important factor contributing to right lateralization of prosody.
Keywords AdultBrain/physiologyBrain MappingEmotions/physiologyFemaleFunctional Laterality/physiologyHumansImage Interpretation, Computer-AssistedMagnetic Resonance ImagingMaleSpeech Perception/physiology
PMID: 23345236
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Article (Published version) (1.8 MB) - public document Free access
Research groups Affective sciences
Mécanismes cérébraux du comportement et des fonctions cognitives (701)
NCCR Affective Sciences
(ISO format)
PICHON, Swann Jean Antoine, KELL, Christian A. Affective and sensorimotor components of emotional prosody generation. In: Journal of Neuroscience, 2013, vol. 33, n° 4, p. 1640-1650. doi: 10.1523/JNEUROSCI.3530-12.2013 https://archive-ouverte.unige.ch/unige:41376

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Deposited on : 2014-10-30

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