Effect of polydrug abuse on sustained attention, visuographic function, and reaction time

The present study consists of two parts. In the first part 23 polydrug abus ers and a control group of 33 from United Arab Emirates were tested for vis uographic functions using the Beaton Visual Retention Test. In the second p art 14 polydrug abusers and a group control subjects were tested for sustai ned attention and reaction time. Analysis suggested that polydrug use affec ts visuographic function and sustained attention adversely but has no effec t on reaction time. The later result was explained in terms of indiscrimina te responses by substance abusers.