15th International Congress of Phonetic Sciences (ICPhS-15)

Barcelona, Spain
August 3-9, 2003

Perception of Syntagmatic Segmentation: A PET Study

K. N. Strelnikov (1), V. A. Vorobiev (1), T. V. Chernigovskaya (2), S. V. Medvedev (1)

(1) Russian Academy of Sciences, Russia
(2) Saint-Petersburg State University, Russia

The present PET study investigates the role of prosodic clues (pitch, pause) in processing the oral speech syntactic structure. The stimuli used were syntactically simple sentences and sentences with different syntagmatic segmentation. They were presented binaurally to twelve right-handed, musically untrained native Russian speakers. One condition reflected automatic perceptual processing, the other understanding of meaning. Significantly increased brain responses occurred in the right inferior posterior frontal region (BA 44, 45,9) and in the right cerebellum (medio-inferior area) in the second condition. The results further support the notion that auditory speech comprehension is not restricted to the left hemisphere. The underlying mechanisms and the respective role of the right hemisphere and cerebellum structures during speech processing are discussed.

Full Paper

Bibliographic reference.  Strelnikov, K. N. / Vorobiev, V. A. / Chernigovskaya, T. V. / Medvedev, S. V. (2003): "Perception of syntagmatic segmentation: a PET study", In ICPhS-15, 2529-2532.