この研究は、ラット3匹を用いて、反復習得ベースライン値に対するマイクロ波ばく露の急性影響を調べた。各セッションで、動物は異なる4回応答シーケンスを習得した。最初の3回は正答により次の回へ進め、4番目の正答が食餌強化になる。間違った応答をすれば、3秒間のタイムアウトになる。ベースラインおよび対照セッションは、各セッション内でのエラーの減少により特徴付けられた。動物は、試験セッションの前に2.8GHzのパルスマイクロ波の急性ばく露（平均電力密度は0.25mW / cm 2から10mW / cm 2の範囲）を受けた。その結果、対照セッションと比較して、5および10mW / cm2の電力密度のマイクロ波への1/2時間のばく露はエラーを増加させ、セッション内での習得パターンを変化させた； 10mW / cm 2の電力密度へのばく露は、全ての動物において、応答シーケンス完了速度を低下させた； 0.25、0.5、および1mW / cm 2の電力密度でのばく露による結果は、全般的に対照の範囲内に収まった、と報告している。
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To investigate the effects of low-power microwave fields on the acquisition of behavior.
Rats were trained to acquire a different four-member chain of responses each session. They were maintained by food reinforcement and subsequently exposed to low levels of microwave irradiation for assessment of behavioral effects. The reinforcement contingencies were arranged so that each correct response advanced the rat closer to and eventually produced reinforcement. Each error or timeout response delayed reinforcement delivery.
| ばく露 | パラメータ |
|---|---|
|
ばく露1:
2.8 GHz
Modulation type:
pulsed
ばく露時間:
continuous for 30 min
|
|
|
ばく露2:
2.8 GHz
Modulation type:
pulsed
ばく露時間:
continuous for 30 min
|
|
|
ばく露3:
2.8 GHz
Modulation type:
pulsed
ばく露時間:
continuous for 30 min
|
|
|
ばく露4:
2.8 GHz
Modulation type:
pulsed
ばく露時間:
continuous for 30 min
|
|
|
ばく露5:
2.8 GHz
Modulation type:
pulsed
ばく露時間:
continuous for 30 min
|
| 周波数 | 2.8 GHz |
|---|---|
| タイプ |
|
| 波形 |
|
| 特性 |
|
| 偏波 |
|
| ばく露時間 | continuous for 30 min |
| Additional information | vertically polarized |
| Modulation type | pulsed |
|---|---|
| Pulse width | 2 µs |
| Repetition frequency | 500 Hz |
| ばく露の発生源／構造 | |
|---|---|
| チャンバの詳細 | 2.44 x 2.44 x 2.44 m; lined with MW absorbing material; exterior surfaces shielded with double wallet copper screening. |
| ばく露装置の詳細 | Animals were exposed while being restrained in a plastic mesh sleeve holder which was suspended from a styrofoam frame. |
| Additional information | Omnidirectional pole lever, mounted from the ceiling and centered 4 cm from the intelligence panel. Electric field was perpendicular to the long axis of the animal`s body. |
| 周波数 | 2.8 GHz |
|---|---|
| タイプ |
|
| 波形 |
|
| 特性 |
|
| 偏波 |
|
| ばく露時間 | continuous for 30 min |
| Additional information | vertically polarized |
| Modulation type | pulsed |
|---|---|
| Pulse width | 2 µs |
| Repetition frequency | 500 Hz |
| ばく露の発生源／構造 |
|
|---|
| 周波数 | 2.8 GHz |
|---|---|
| タイプ |
|
| 波形 |
|
| 特性 |
|
| 偏波 |
|
| ばく露時間 | continuous for 30 min |
| Additional information | vertically polarized |
| Modulation type | pulsed |
|---|---|
| Pulse width | 2 µs |
| Repetition frequency | 500 Hz |
| ばく露の発生源／構造 |
|
|---|
| 周波数 | 2.8 GHz |
|---|---|
| タイプ |
|
| 波形 |
|
| 特性 |
|
| 偏波 |
|
| ばく露時間 | continuous for 30 min |
| Additional information | vertically polarized |
| Modulation type | pulsed |
|---|---|
| Pulse width | 2 µs |
| Repetition frequency | 500 Hz |
| ばく露の発生源／構造 |
|
|---|
| 周波数 | 2.8 GHz |
|---|---|
| タイプ |
|
| 波形 |
|
| 特性 |
|
| 偏波 |
|
| ばく露時間 | continuous for 30 min |
| Additional information | vertically polarized |
| Modulation type | pulsed |
|---|---|
| Pulse width | 2 µs |
| Repetition frequency | 500 Hz |
| ばく露の発生源／構造 |
|
|---|
The exposure to microwave irradiation disrupted the pattern of acquisition. Exposure with a power density of 10 mW/cm² produced consistent alterations in behavior. Exposure at 5 mW/cm² produced alterations in 50% of the test sessions. The alterations were characterized by an increase in total error responses, as well as an elevation in pausing between responses. The data of exposures at 0.25, 0.5, and 1 mW/cm² power densities were generally within the control range.
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