A magnetoencephalographic study on development of the somatosensory cortex in infants

Kenjiro Gondo, Shozo Tobimatsu, Ryutaro Kira, Yoichi Tokunaga, Tomoya Yamamoto, Toshiro Hara

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

In order to examine the sensori-motor correlation in infants, we recorded the somatosensory evoked magnetic fields to tactile stimulation by using a 37-channel magnetoencephalograph. Twelve healthy infants were examined at palmar grasp stage and pincers grasp stage. Air-tapping stimulation of the right thumb was performed. Three distinct components (WI-3) emerged, W3, with a latency of ∼100 ms, being the most prominent. As infants grew up, the correlation coefficient and the amplitude of the equivalent current dipole of W3 for the thumb increased. These developmental changes may be attributable to increases in the stability and reproducibility of the cortex in response to somesthetic inputs. Moreover, this change along with motor development supports the presence of a sensori-motor correlation in infants.

Original languageEnglish
Pages (from-to)3227-3231
Number of pages5
JournalNeuroReport
Volume12
Issue number15
DOIs
Publication statusPublished - Oct 29 2001

All Science Journal Classification (ASJC) codes

  • Neuroscience(all)

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