The detailed summary of this article is not available in your language or incomplete. Would you like to see a complete translation of the summary?
Then please contact us →
To investigate whether short-term exposure to GSM and UMTS base station signals affects attention, memory and physiological components in 44 electrosensitive and 44 control participants.
The participants performed four testing sessions (at least one week apart from each other): a) baseline measurement before exposure, b) exposure to GSM, c) exposure to UMTS and d) sham exposure. Cognitive functioning was measured using a digit symbol substitution test (given a table displaying the correspondence between pairs of digits [from 1 to 9] and symbols, subjects have to fill in blank squares with the symbol that is paired with the digit displayed above the square; subjects have to fill in as many squares as possible in 90 sec), a digit span test and mental arithmetic tasks (5 sec to complete addition and subtraction equations; 187 trials).
認知的／行動学的影響評価項目: cognitive functioning: short-term memory, attention and perceptual motor speed, working memory
認知的／行動学的影響評価項目: cognitive functioning: short-term memory (digit span test: percentage of correct scores); attention and perceptual motor speed (digit symbol substitution test: number of symbols correctly completed); working memory (mental arithmetic task: percentage of correct scores)
過敏症／主観的不定愁訴: subjective well-being (VAS) and symptoms under exposure; judgement whether fields were "on" or "off"
Both groups did not differ significantly in their cognitive performance on the baseline measurements. Cognitive functioning was not affected by short-term exposure to either GSMorUMTS signals in control participants and electrosensitive participants. Electrosensitive participants had a significantly higher level of skin conductance than control participants while performing the cognitive tasks (independent of exposure condition). Blood volume pulse and heart rate did not differ between the two groups nor were they affected by the type of exposure. .