question:  What effect do the purple berries in the forest LEAST likely produce in humans?
context: By H. B. Fyfe THE TALKATIVE TREE Dang vines! It may be useful to discover temporary sources in this area of natural foods." The Planetary State of Haurtoz had been organized some fifteen light-years from old Earth, but many of the home world's less kindly techniques had been employed. Lack of complete loyalty to the state was likely to result in a siege of treatment that left the subject suitably "re-personalized." The maintenance of a proper viewpoint was a necessity if the Planetary State were to survive the hostile plots of Earth and the latter's decadent colonies. Since the crew would be eating packaged rations during repairs, Yrtok could be spared to command a scout detail. Chief Slichow emphasized that the keepers of rations could hardly, in an emergency, give even the appearance of favoring themselves in regard to food. To reach their assigned sector, they had to climb a forbidding ridge of rock within half a kilometer. Only a sparse creeper grew along their way, its elongated leaves shimmering with bronze-green reflections against a stony surface; but when they topped the ridge a thick forest was in sight. They marched down into the valley at a brisk pace, becoming more aware of the clouds and atmospheric haze. Distant objects seemed blurred by the mist, taking on a somber, brooding grayness. For all Kolin could tell, he and the others were isolated in a world bounded by the rocky ridge behind them and a semi-circle of damp trees and bushes several hundred meters away. Low creepers became more plentiful, interspersed with scrubby thickets of tangled, spike-armored bushes. Once, a shrub puffed out an enormous cloud of tiny spores. Yrtok paused to examine some purple berries glistening dangerously on a low shrub. Fifty meters away, Ammet sat beside the bush with the purple berries, utterly relaxed. As he reached her, whatever Yrtok was examining came to life and scooted into the underbrush with a flash of greenish fur. Soaring thirty or forty meters into the thin fog and dwarfing other growth, it seemed the most promising choice.
output:  Blending in to one's surroundings
options:  Creating hallucinations and delusions  Blending in to one's surroundings  Intoxicating the body and mind  Relaxing and letting one's guard down