On the lateralization of emotional prosody: an event-related functional MR investigation.
In order to investigate the lateralization of emotional speech we recorded the brain responses to three emotional intonations in two conditions, i.e., "normal" speech and "prosodic" speech (i.e., speech with no linguistic meaning, but retaining the 'slow prosodic modulations' of speech). Participants listened to semantically neutral sentences spoken with a positive, neutral, or negative intonation in both conditions and judged how positive, negative, or neutral the intonation was on a five-point scale. Core peri-sylvian language areas, as well as some frontal and subcortical areas were activated bilaterally in the normal speech condition. In contrast, a bilateral fronto-opercular region was active when participants listened to prosodic speech. Positive and negative intonations elicited a bilateral fronto-temporal and subcortical pattern in the normal speech condition, and more frontal activation in the prosodic speech condition. The current results call into question an exclusive right hemisphere lateralization of emotional prosody and expand patient data on the functional role of the basal ganglia during the perception of emotional prosody.
Kotz
Sonja A
SA
Max-Planck-Institute of Cognitive Neuroscience, Stephanstrasse 1a, P.O. Box 500355, Leipzig D-04317, Germany. kotz@cns.mpg.de
Meyer
Martin
M
Alter
Kai
K
Besson
Mireille
M
von Cramon
D Yves
DY
Friederici
Angela D
AD
D000328:Adult; D000339:Affect / Q000502:physiology*; D001921:Brain / Q000378:metabolism*; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D005260:Female; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D013018:Sound Spectrography; D013067:Speech Perception / Q000502:physiology*; D013997:Time Factors