K 303
Dynamic stereopsis under the influence of alcohol
J. Wulf, W. Haase, U. Lockemann, K. Püschel
In this study we examined the influence of different, low blood alcohol concentrations on central and peripheral dynamic stereopsis. 43 healthy test individuals with regular vision were subjected to an oral alcohol ingestion. Target blood alcohol concentration were 0.8 and 0.4. The threshold values needed to create dynamic stereopsis were tested while sober and at both target blood alcohol concentrations. A test device developed by the Max-Planck-Institut für Hirnforschung/Frankfurt was used, threshold values were tested in the visual center and in the periphery up to 20° eccentricity. The threshold values while sober were used as reference.
The results showed a signifcant (p<0,05) increase in threshold values needed to induce a three-dimensionally perceived motion. At 0.4 the increase was about 28.2%, at 0.8 54.4%. These results allow to doubt the ability of drivers to safely participate in traffic, even at low blood alcohol concentrations not of legal relevance
Joachim Wulf, Institut für Rechtsmedizin der Universität Hamburg, Butenfeld 34, D-22527 Hamburg