この研究は、合計39人の被験者で実施した2つの別々の実験で、右脳半球に弱い複雑な磁界のばく露を受けている間に、存在の感覚または感覚的存在の感知率は、その実験継続中の3時間における地磁気活動の増加と中程度に相関したことを報告している。実験室近くの磁力計の値を分析すると、地磁気の東西成分の強度は少なくとも10分間に約1 pT/ sで一貫して増加し、累積変化は約15から20 nTになることが示された。アルファリズム持続時間の後頭葉に対する側頭葉の比率は、地磁気活動上昇および被験者らの存在感知の報告のどちらとも有意に相関した。感知された存在の感覚、側頭葉の感受性の心理測定的推論および心理的解離の履歴の間の共分散を除去すると、地磁気活動と存在の感知報告の間の部分的相関の強さは強まる場合も弱まる場合もあった、などの検討が行われた。
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To investigate whether experiences of a "sensed presence" within an experimental setting were associated with concurrent, increasing geomagnetic activity.
The authors define "sensed presence" as the prototype for reports of noncorporal entities including gods, deceased family members and other ethereal forms. "Sensed presence" can be elicited by weak magnetic fields.
39 students (23 in study 1; 16 in study 2) were exposed. During the experiments a blindfold had been placed over the subjects eyes.
Study 1: Subjects were told to participate in a relaxation study where weak magnetic fields may be presented; the "sensed presence" was not mentioned.
Study 2: Subjects were told the purpose of the experiment was to discern if specific types of magnetic fields could affect the occurence of a "sensed presence".
Additionally, three-hour values of geomagnetic activity were obtained during, before and after the experiments, together with the average of the low and high values of the day before, the day of and after the experiment.
| 周波数 |
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|---|---|
| タイプ |
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| ばく露時間 | continuous for 30 min |
| ばく露の発生源／構造 | |
|---|---|
| ばく露装置の詳細 | test person sitting on a chair in an acoustic chamber wearing a helmet; four sets of solenoids embedded on each side of the helmet; field delivered to opposed solenoid pairs for 0.5s; field rotated through the four pairs once every 2 s; field over the right hemisphere 10 - 30 % stronger than over the left |
| Sham exposure | A sham exposure was conducted. |
Study 1 and 2: The incidence of a "sensed presence" while being exposed to magnetic fields was moderately correlated with increased geomagnetic activity during the 3-hour period of the experiment.
Study 1: Except for a significant correlation between EEG measures and the geomagnetic activity the day before the experiment, there were no other significant correlations with "sensed presence" or geomagnetic activity.
Study 2: After applying a statistical correction procedure, the correlation between the reports of a "sensed presence" and the geomagnetic activity did a) not change after removing the influence of the factor "capacity to fantasize; b) decrease after removing the influence of the factor "incidence of dissociation"; and c) increase after removing the influence of the factor "temporal lobe sensitivity".
The results suggest that "sensed presence" is generated by right hemispheric processes that are enhanced by weak magnetic fields and that can be encouraged by increased global geomagnetic activity.
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