この研究は、単離された神経の機能への低レベルのミリ波(MMW)の影響を再現し、その放射強度依存特性について調べた。神経へのMMWばく露は、0.02、0.1、0.5、または2.6mWcm(-2)(41.34GHz)で23分間与え、それと同時に、神経の高レート電気刺激(HRS、20対のパルスs(-1)、 パルス間隔9ms)の処置を行った。その結果、MMWは、条件付け複合活動電位(CAP)に影響を及ぼさなかったが、HRSによるテストCAPの低下を有意に減弱させた;この効果の大きさは、0.02、0.1、2.6の強度で事実上同じ(20-25%)であったが、0.5mWcm(-2)では、有意な変化を生じなかった、と報告している。
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 →
To replicate the effect of low-intensity millimeter waves of previous studies on isolated nerve function and to characterize its dependence on irradiation intensity. Exposures were accompanied by a high-rate electrical stimulation of the nerve.
周波数 | 41.34 GHz |
---|---|
タイプ |
|
ばく露時間 | 2 HRS trials of 23 min separated by an interval of 53 min |
Modulation type | pulsed, CW |
---|---|
Pulse width | 0.2 ms |
Pulse type | rectangular |
Additional information |
paired pulses with an interval of 9 ms between the pulses in a pair: a) 4 pairs/s = LRS b) 20 pairs/s = HRS |
ばく露の発生源/構造 | |
---|---|
Distance between exposed object and exposure source | 52 mm |
チャンバの詳細 | exposure bath maintained at 11 to 12°C filled with minerial oil and equipped with two pairs of saline bridge electrodes |
Sham exposure | A sham exposure was conducted. |
Additional information | first HRS trial without millimeter wave exposure, the second one with millimeter wave exposure or sham exposure |
Millimeter waves had no effect on the conditioning compound action potentials, but significantly attenuated the high-rate electrical stimulation-caused decrease of the test compound action potentials (conditioning/test compound action potential (CAP), i.e. the CAPs evoked by the first and the second stimuli in a pair, respectively). The magnitude of this effect was virtually the same at field intensities of 0.02, 0.1, and 2.6 mW/cm². Exposure at 0.5 mW/cm², however, did not cause statistically significant changes.
The findings are consistent with earlier observations of this millimeter wave effect and provide further evidence for its nonthermal mechanism.
このウェブサイトはクッキー(Cookies)を使って、最善のブラウジングエクスペリエンスを提供しています。あなたがこのウェブサイトを継続して使用することで、私たちがクッキーを使用することを許可することになります。