osknorka mutants show significantly greater optomotor responsiveness than wild type flies in an optomotor maze paradigm. In contrast to wild type flies, optomotor responses in osknorka mutants are not significantly affected when a distraction is present. osknorka optomotor performance is not significantly increased following repeated exposure to the maze.
Unlike wild type flies, osknorka flies fail to learn to avoid visuals associated with shaking.
osknorka flies have attenuated baseline brain responses when exposed to visual objects alone, compared to wild type flies. Mutant flies also exhibit an aberrant response to novel objects.
Homozygous osknorka mutant flies do not show any change in sensitivity to ethanol vapor compared to controls.
In memory tests, mutants perform at 87% of wild-type after a single training session, at 8% after spaced training.
Homozygotes exhibit severe defects in one-day memory after spaced training.
Etymology: Given the name "norka", after one of Pavlov's dogs.