| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Outline of Final Research Achievements |
Previous work has demonstrated higher brain dysfunction in infants with periventricular leukomalacia. The present study examined the hemodynamic response of the brain to speech stimulation, imaged using near-infrared spectroscopy in 71 preterm infants. The preterm infants showed a different time course of hemoglobin change in response to phonemic or prosodic contrasts and did not demonstrate functional hemispheric specialization during speech stimulation. At a later corrected gestational age, the proportion of atypical hemoglobin change patterns decreased, and a right-dominant functional laterality, similar to that in term infants, was demonstrated. The findings of this study indicate differences between the functional system for phonemic and prosodic processing in preterm and term infants. However, that system develops and catches up by the preterm infants’ projected due dates.
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