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[Effect of low dose alcohol concentration on saccadic eye movements. Infrared reflection technique for recording oculomotor reactions with reference to dangerous traffic situations].

Saccadic eye movements were registered under different ethanol concentrations (0 g/kg, 0.5 g/kg, 1.0 g/kg) using an infrared reflexion method. On the basis of photographic pictures conflict situations of a car driver were simulated. 12 young car drivers were exposed for 10 sec to four pictures, all under different ethanol concentrations. The eye movements were registered and analyzed by a computer. The amplitude of saccades, their number, duration and velocity as well as the points of fixation and the scanning of the pictures were qualitatively and quantitatively analyzed. All persons demonstrated deficits in all parameters under 1 g/kg blood ethanol concentration. Nearly all results were reduced under 0.5 g/kg in comparison to 0 g/kg situation. In conclusion, low dose ethanol influence the saccadic eye movements. On the other hand the study could demonstrate a new technique (infrared reflexion technique), which allows the qualitative and quantitative recording of the influence of ethanol as well as peripheral as cortical structures of the brain. The exposition to photographic pictures demonstrating dangerous traffic situations simulate real traffic situations and allows to transfer the laboratory results to real situations.