To study the effects of weak electromagnetic fields on simple forms of behavior using Tenebrio molitor beetles.
Each experiment consisted of 5-10 exposed groups and 5-10 control groups (each group = 10 beetles). One trial per day was performed with each group of beetles for five days. Each experiment was repeated 4-5 times at different times of the year.
| Exposure | Parameters |
|---|---|
|
Exposure 1:
36 GHz
Exposure duration:
continuous for 15 min
|
|
| Frequency | 36 GHz |
|---|---|
| Type | |
| Exposure duration | continuous for 15 min |
| Exposure source |
|
|---|---|
| Distance between exposed object and exposure source | 15 cm |
| Setup | beetles exposed on the day before or immediately before the behavior experiments |
| Sham exposure | A sham exposure was conducted. |
| Measurand | Value | Type | Method | Mass | Remarks |
|---|---|---|---|---|---|
| power density | 100 µW/cm² | - | - | - | - |
All groups showed an initial orientation reaction which was followed by an adaptation to the apparatus during the last days of the experiment (decreased reaction time). Exposure to weak electromagnetic irradiation led to increases in the reaction times at the initial days of the experiments (during orientation reaction), but had no effect on subsequent adaptation. The effects of irradiation were seasonal in nature and differed in the two types of behaviour (the effects were weaker in negative phototaxis reactions than in food-related behaviour).
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