Study type: Medical/biological study (experimental study)

Sleep inducing effect of low energy emission therapy. med./bio.

Published in: Bioelectromagnetics 1994; 15 (1): 67-75

Aim of study (acc. to author)

To assess the possible sleep inducing effect of Low Energy Emission Therapy (LEET) with respect to sleep latency to the different sleep stages and sleep stage duration. Also the depth of sleep achieved in the 15 min following active or inactive treatment was studied. It was a double blind cross-over study on 52 healthy subjects.



Exposure Parameters
Exposure 1: 27.12 MHz
Modulation type: AM
Exposure duration: 15 min
  • SAR: 0.1 mW/kg minimum (brain)
  • SAR: 100 mW/kg maximum (brain)
  • SAR: 10 W/kg peak value (partial body) (in the oral mucosa)

Exposure 1

Main characteristics
Frequency 27.12 MHz
Exposure duration 15 min
Modulation type AM
Additional info

field 3 s on followed by 1 s without field

Exposure setup
Exposure source
  • Symtonic LEET device
Setup testperson holds mouthpiece between the tongue and the palate
Sham exposure A sham exposure was conducted.
Measurand Value Type Method Mass Remarks
SAR 0.1 mW/kg minimum - brain -
SAR 100 mW/kg maximum - brain -
SAR 10 W/kg peak value - partial body in the oral mucosa

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Investigated organ system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

A significant decrease in sleep latency to stage B2 (Loomis scoring), and an increase in the total duration of stage B2 were observed on active treatment as compared with inactive treatment.

Study character:

Study funded by

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