研究のタイプ: 医学/生物学の研究 (experimental study)

[中枢神経系に対する変調VHF電磁界の影響] med./bio.

Effects of modulated VHF fields on the central nervous system.

掲載誌: Ann N Y Acad Sci 1975; 247: 74-81

ニワトリの摘出前脳標本でCa流出に対する超低周波電界(147MHz, 1-2mW/cm^2,0ー35Hzの変調波)の影響を調べた.20分間のばく露でCa流出を増加させたが,骨格筋では効果が見られなかった.Ca流出効果は,ばく露電界変調周波数のある限定された範囲で生じる.

The detailed summary of this article is not available in your language or incomplete. Would you like to see a complete translation of the summary? Then please contact us →

研究目的(著者による)

To investigate the effects of 147 MHz radiofrequency irradiation at various AM modulation on the calcium efflux from chicken brain tissue in vitro.

影響評価項目

ばく露

ばく露 パラメータ
ばく露1: 147 MHz
Modulation type: AM

ばく露1

主たる特性
周波数 147 MHz
タイプ
  • electromagnetic field
波形
  • sinusoidal
Modulation
Modulation type AM
Modulation frequency 0–35 Hz
Modulation depth 90 %
Additional information

Modulation frequencies of 0.5, 3, 6, 9, 11, 16, 20 and 25 Hz and an unmodulated carrier wave were also used.

ばく露装置
ばく露の発生源/構造
  • antenna couplar
ばく露装置の詳細 two triangular alminium plates / 4100 cm²
Additional information chick brains put into test tubes
パラメータ
測定量 種別 Method Mass 備考
電力密度 10 W/m² unspecified 測定値 - or 20 W/m²

Reference articles

ばく露を受けた生物:

方法 影響評価項目/測定パラメータ/方法

研究対象とした生物試料:
調査の時期:
  • ばく露後

研究の主なアウトカム(著者による)

The 147 MHz VHF filed was AM modulated at 0.5, 3, 6, 9, 11, 16, 20, 25, and 35 Hz. Unmodulated exposure and fields modulated at 0.5 and 3 Hz as well as 35 Hz modulation did not significantly alter the calcium efflux. Whereas a progressive increase of calcium efflux at modulation frequencies from 6 to 16 Hz were observed. At 20 Hz AM modulation the calcium efflux were comparable to the one at 6 Hz. Results obtained at 25 Hz modulation were not statisically significant.
Data obtained from an additional experiment with NaCN poisoned brain tissue did not differ and suggests that the calcium efflux is independent of other metabolic activities.
Finally, a preliminary experiment with chicken skeletal muscle did not indicate any major differences.

研究の種別:

研究助成

関連論文