A literature review on neonate's brain activity for sensory experience <Review>

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  • 感覚刺激に対する新生児の大脳皮質の神経活動に関する文献的考察 <総説>
  • 感覚刺激に対する新生児の大脳皮質の神経活動に関する文献的考察
  • カンカク シゲキ ニ タイスル シンセイジ ノ ダイノウヒシツ ノ シンケイ カツドウ ニ カンスル ブンケンテキ コウサツ

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Abstract

Aim: The aim of this study was to survey neonate's brain activity for sensory experience and to clarify the meaning and issue of using cerebral monitoring technique for developmental care research. Method: A literature review covering the period from 1993 to 2008 was carried out using electronic database (Ichushi Web, PubMed), using the flowing formula; (neonates OR infants) AND (near infrared spectroscopy: NIRS). Fifteen researches were selected and organized. Result: The articles ware classified into five categories: the response to auditory stimulation, the response to visual stimulation, the response to pain stimulation, the response to olfactory stimulation, and the response to passive movement. Measurement regions were sensory parts of stimulation or frontal lobe. Subjects were normal or sick neonates, particularly preterm infants were surveyed about pain response. In many articles, oxy-hemoglobin and total-hemoglobin increased at brain activity for sensory stimulation, however it was unclear the well-defined pattern of regional brain activation as there were many kinds of stimulation and different measurement regions among articles. Conclusion: NIRS was thought as a new objective method of measuring sensory experience among neonates. However, the sensitivity of NIRS was not established. It was thought that fundamental research such as observational researches were required to establish well-defined brain responses of using NIRS.

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