Animals were individually confined in Perspex cages (14 x 5 x 5 cm) limiting their movement without explicit restraint. Three of the small cages were secured to a Perspex base plate which fitted closely within a container (34 x 20 x 12.5 cm) of twin wall, corrugated polypropylene.
The box was positioned centred along the mid-line of the cell so that the animals were placed mid-way between septum and floor which had a separation of 90 cm at this point.
Based on the SAR estimates, the absorbed energy per pulse had a range of 0.19 to 0.25 mJ/kg, with a mean of 0.23 mJ/kg.
Mess- und Berechnungsdetails
The output voltage of the amplifier measured by means of a coaxial RF millivoltmeter was used by the control system to adjust the signal source output level to keep exposures within ± 0.6 V/m of the target. A field uniformity of better than ±10% across the volume occupied by the animals was confirmed by measurements made using a single axis probe utilising an electrically short dipole and diode detector and a 3-axis E-field probe. The dominant field component was vertical. The whole-body SAR was estimated using data for a prolate spheroid model of a mouse in the K orientation.
Es wurden quer durch das Experiment keine signifikanten Feld-abhängigen Auswirkungen auf die Leistung bei der Auswahl-Genauigkeit oder der gesamten Zeiten bis zum Vervollständigen der Aufgabe gefunden. Die Ergebnisse deuten darauf hin, dass die Exposition bei hochfrequenterBefeldung (ein GSM-Signal simulierend) unter diesen Bedingungen des Experiments nicht die Erfassung der erlernten Antwort beeinflusst.
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