FlyBase curator comment: this entry is used to capture phenotypic information when the particular allele (or allele combination) used by the author could not be determined but the context of the experiment suggests that the phenotype being described is some kind of loss of function.
Mutant flies are hypersensitive to the wake-promoting effects of food deprivation.
In contrast to wild-type, mutants show an increased behavioural response to cocaine exposure but show no sensitization to a subsequent exposure.