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

[902 MHzのGSM携帯電話電磁界ばく露下での前注意的聴覚情報処理:ミスマッチ陰性電位研究] med./bio.

Preattentive auditory information processing under exposure to the 902 MHz GSM mobile phone electromagnetic field: a mismatch negativity (MMN) study.

掲載誌: Bioelectromagnetics 2009; 30 (3): 241-248

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研究目的(著者による)

To study the short-term effects of the GSM mobile phone electromagnetic fields on the mismatch negativity and associated brain processing.

詳細情報

The mismatch negativity is a sensitive indicator of pre-attentive auditory discrimination processing.
Mismatch negativity was elicited using a multifeature paradigm where four deviant types (duration, intensity, frequency, having a gap in the middle of a tone) appeared in a sequence of identical stimuli. 17 healthy volunteers (12 female) were investigated. Participants were watching a movie without sound and they were instructed not to pay attention to the auditory stimuli.

影響評価項目

ばく露

ばく露 パラメータ
ばく露1: 902 MHz
Modulation type: pulsed
ばく露時間: 1 h in 6 minute blocks
  • SAR: 1.14 W/kg
  • SAR: 0.82 W/kg
  • SAR: 1.21 W/kg peak

ばく露1

主たる特性
周波数 902 MHz
タイプ
  • electromagnetic field
ばく露時間 1 h in 6 minute blocks
Modulation
Modulation type pulsed
Pulse width 0.58 µs
Repetition frequency 217 Hz
ばく露装置
ばく露の発生源/構造
  • セルラ-電話
ばく露装置の詳細 earplug-shaped earphones inserted in both ears; GSM phone attached to a headset placed on either ear in normal phoning position
パラメータ
測定量 種別 Method Mass 備考
SAR 1.14 W/kg - 測定値 1 g -
SAR 0.82 W/kg - 測定値 10 g -
SAR 1.21 W/kg peak 測定値 - -

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:
研究対象とした臓器系:
調査の時期:
  • ばく露中

研究の主なアウトカム(著者による)

The mismatch negativity latency and amplitude showed no significant differences due to electromagnetic field exposure on either side.
No evidence was found that acute exposure to GSM mobile phone electromagnetic fields affects cortical auditory change detection processing reflected by the mismatch negativity. Pre-attentive change detection might not be affected by electromagnetic field exposure.

研究の種別:

研究助成

関連論文