Neural correlates of intonation and lexical tone in tonal and non-tonal language speakers.
Intonation, the modulation of pitch in speech, is a crucial aspect of language that is processed in right-hemispheric regions, beyond the classical left-hemispheric language system. Whether or not this notion generalises across languages remains, however, unclear. Particularly, tonal languages are an interesting test case because of the dual linguistic function of pitch that conveys lexical meaning in form of tone, in addition to intonation. To date, only few studies have explored how intonation is processed in tonal languages, how this compares to tone and between tonal and non-tonal language speakers. The present fMRI study addressed these questions by testing Mandarin and German speakers with Mandarin material. Both groups categorised mono-syllabic Mandarin words in terms of intonation, tone, and voice gender. Systematic comparisons of brain activity of the two groups between the three tasks showed large cross-linguistic commonalities in the neural processing of intonation in left fronto-parietal, right frontal, and bilateral cingulo-opercular regions. These areas are associated with general phonological, specific prosodic, and controlled categorical decision-making processes, respectively. Tone processing overlapped with intonation processing in left fronto-parietal areas, in both groups, but evoked additional activity in bilateral temporo-parietal semantic regions and subcortical areas in Mandarin speakers only. Together, these findings confirm cross-linguistic commonalities in the neural implementation of intonation processing but dissociations for semantic processing of tone only in tonal language speakers.
['Chien|Pei-Ju|PJ|0000-0001-7810-107X', 'Friederici|Angela D|AD|0000-0002-6328-865X', 'Hartwigsen|Gesa|G|0000-0002-8084-1330', 'Sammler|Daniela|D|0000-0001-7458-0229']
D000293:Adolescent D000328:Adult D001921:Brain D001931:Brain Mapping D002681:China D003657:Decision Making D005260:Female D005625:Frontal Lobe D005858:Germany D006801:Humans D007802:Language D008037:Linguistics D008279:Magnetic Resonance Imaging D008297:Male D010296:Parietal Lobe D010898:Pitch Perception D011930:Reaction Time D012727:Sex Characteristics D013060:Speech D013067:Speech Perception D014831:Voice D055815:Young Adult
pitch voice phonology semantics prosody