• experimental
  
• epidemiological
  

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Medical/biological Study (experimental study)

Behavioral effect of terahertz waves in male mice. med./biol.

PubMed Entry

Journal web site

Aim of study (according to author)
To study the effect of terahertz waves (3.6 THz) on the behavior of mice.
Background/further details:
In the first series of experiments, explorative behavior during exposure was investigated in following groups: an exposure group, a control group and a sham exposure group (exposed to a 30-40 mW electricity supply device). In the second series, anxiety behavior was investigated one day after exposure (30 min) in an elevated plus-maze (exposed group and control group). Each group consisted of 10-12 male mice.

Endpoint

• cognitive/behavioural endpoints: explorative behaviour, anxiety

Exposure
General category: terahertz fields

Field characteristics	Parameters
field 1: 3.6 THz exposure duration: continuous for 15 min.	power: 15 mW
field 2: 3.6 THz exposure duration: continuous for 30 min.	power: 15 mW

Exposed system:
animal (species/strain): mouse/C57BL/6J
whole body exposure

Methods
Endpoint/Measurement parameters/Methodology

• cognitive/behavioural endpoints: explorative behavior (number and total time of sniffing the cage hole through which the THz laser passes, number and total time of approaches to the barrier and of tearing/strewing the bedding; time spent near the hole, and in the area of THz laser); anxiety (behavior in elevated plus maze)

Main outcome of study (according to author)
In the first series of experiments, the exposed animals showed a decreased explorative activity compared to the control group. In the second series, the number of entries into the central area was lower and the number of entries in the closed arms was higher in the exposed group, no entry into the open arms was observed.
The authors concluded that mice perceived terahertz waves even during short-term exposure and showed increased anxiety on the day after 30-min exposure.

(Study character: medical/biological study, experimental study, full/main study)

Study funded by

• not stated