Development of a whole-head child MEG system

Y. Adachi; M. Miyamoto; J. Kawai; M. Kawabata; M. Higuchi; D. Oyama; G. Uehara; H. Ogata; H. Kado; Y. Haruta; G. Tesan; S. Crain

doi:10.1007/978-3-642-12197-5_3

Development of a whole-head child MEG system

Y. Adachi^*, M. Miyamoto, J. Kawai, M. Kawabata, M. Higuchi, D. Oyama, G. Uehara, H. Ogata, H. Kado, Y. Haruta, G. Tesan, S. Crain

^*Corresponding author for this work

Centre for Language Sciences (CLaS)

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

3 Citations (Scopus)

Abstract

A whole-head magnetoencephalography (MEG) system was developed to study cognitive processing in young children. The child MEG system has a helmet-shaped sensor array designed to fit child head sizes. The sensor array is composed of 64 LTS-SQUID axial-type gradiometric magnetometers with 50 mm of baseline length, arranged about 100 mm from the center of the child's head. The sensor array is installed in a helmet of a horizontal dewar with a head circumference of about 530 mm, which was determined on the basis of the preliminary investigation of the standard pre-school children's head. The liquid helium capacity of the dewar is roughly 100 liters, and the helium consumption rate is less than 6 liters/day. The sensors have been positioned in the dewar using a ship-in-a-bottle approach. To verify the performance of the child MEG system, an auditory evoked field measurement was taken of a healthy 4-year-old child subject. Large simultaneous magnetic field components corresponding to the P100m were successfully observed in the child over both the right and the left hemispheres. The latency of the effect was at around 130 ms, and two equivalent current dipoles were found in the temporal lobes in both hemispheres of the child subject.

Original language	English
Title of host publication	17th International Conference on Biomagnetism Advances in Biomagnetism - Biomag2010
Editors	Selma Supek, Ana Sušac
Place of Publication	Berlin; New York
Publisher	Springer, Springer Nature
Pages	35-38
Number of pages	4
ISBN (Electronic)	9783642121975
ISBN (Print)	9783642121968
DOIs	https://doi.org/10.1007/978-3-642-12197-5_3
Publication status	Published - Apr 2010
Event	17th International Conference on Biomagnetism Advances in Biomagnetism, Biomag - 2010 - Dubrovnik, Croatia Duration: 28 Mar 2010 → 1 Apr 2010

Publication series

Name	IFMBE Proceedings
Publisher	Springer
Volume	28

Other

Other	17th International Conference on Biomagnetism Advances in Biomagnetism, Biomag - 2010
Country/Territory	Croatia
City	Dubrovnik
Period	28/03/10 → 1/04/10

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10.1007/978-3-642-12197-5_3

Cite this

Adachi, Y., Miyamoto, M., Kawai, J., Kawabata, M., Higuchi, M., Oyama, D., Uehara, G., Ogata, H., Kado, H., Haruta, Y., Tesan, G., & Crain, S. (2010). Development of a whole-head child MEG system. In S. Supek, & A. Sušac (Eds.), 17th International Conference on Biomagnetism Advances in Biomagnetism - Biomag2010 (pp. 35-38). (IFMBE Proceedings; Vol. 28). Springer, Springer Nature. https://doi.org/10.1007/978-3-642-12197-5_3

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title = "Development of a whole-head child MEG system",

abstract = "A whole-head magnetoencephalography (MEG) system was developed to study cognitive processing in young children. The child MEG system has a helmet-shaped sensor array designed to fit child head sizes. The sensor array is composed of 64 LTS-SQUID axial-type gradiometric magnetometers with 50 mm of baseline length, arranged about 100 mm from the center of the child's head. The sensor array is installed in a helmet of a horizontal dewar with a head circumference of about 530 mm, which was determined on the basis of the preliminary investigation of the standard pre-school children's head. The liquid helium capacity of the dewar is roughly 100 liters, and the helium consumption rate is less than 6 liters/day. The sensors have been positioned in the dewar using a ship-in-a-bottle approach. To verify the performance of the child MEG system, an auditory evoked field measurement was taken of a healthy 4-year-old child subject. Large simultaneous magnetic field components corresponding to the P100m were successfully observed in the child over both the right and the left hemispheres. The latency of the effect was at around 130 ms, and two equivalent current dipoles were found in the temporal lobes in both hemispheres of the child subject.",

author = "Y. Adachi and M. Miyamoto and J. Kawai and M. Kawabata and M. Higuchi and D. Oyama and G. Uehara and H. Ogata and H. Kado and Y. Haruta and G. Tesan and S. Crain",

year = "2010",

month = apr,

doi = "10.1007/978-3-642-12197-5_3",

language = "English",

isbn = "9783642121968",

series = "IFMBE Proceedings",

publisher = "Springer, Springer Nature",

pages = "35--38",

editor = "Selma Supek and Ana Su{\v s}ac",

booktitle = "17th International Conference on Biomagnetism Advances in Biomagnetism - Biomag2010",

address = "United States",

note = "17th International Conference on Biomagnetism Advances in Biomagnetism, Biomag - 2010 ; Conference date: 28-03-2010 Through 01-04-2010",

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Adachi, Y, Miyamoto, M, Kawai, J, Kawabata, M, Higuchi, M, Oyama, D, Uehara, G, Ogata, H, Kado, H, Haruta, Y, Tesan, G & Crain, S 2010, Development of a whole-head child MEG system. in S Supek & A Sušac (eds), 17th International Conference on Biomagnetism Advances in Biomagnetism - Biomag2010. IFMBE Proceedings, vol. 28, Springer, Springer Nature, Berlin; New York, pp. 35-38, 17th International Conference on Biomagnetism Advances in Biomagnetism, Biomag - 2010, Dubrovnik, Croatia, 28/03/10. https://doi.org/10.1007/978-3-642-12197-5_3

Development of a whole-head child MEG system. / Adachi, Y.; Miyamoto, M.; Kawai, J. et al.
17th International Conference on Biomagnetism Advances in Biomagnetism - Biomag2010. ed. / Selma Supek; Ana Sušac. Berlin; New York: Springer, Springer Nature, 2010. p. 35-38 (IFMBE Proceedings; Vol. 28).

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

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AU - Adachi, Y.

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AU - Oyama, D.

AU - Uehara, G.

AU - Ogata, H.

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Development of a whole-head child MEG system

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