Abstract: The invention provides a method of identifying a compound that alters vigilance. The method consists of contacting an invertebrate with a candidate compound, evaluating a vigilance property in the contacted invertebrate, and determining if the candidate compound alters the vigilance property in the contacted invertebrate. A candidate compound that alters the vigilance property in the contacted invertebrate is identified as a compound that alters vigilance. The invention also provides a method of identifying a vigilance enhancing compound that modulates homeostatic regulation or a vigilance diminishing compound that modulates homeostatic regulation. The method consists of contacting an invertebrate with a compound that increases or decreases vigilance, and determining the effect of the compound on a homeostatic regulatory property of vigilance.

Abstract: The present invention provides a method of identifying a compound that modulates a mammalian vestibular system. The method consists of administering a test compound to an invertebrate, and measuring a geotactic behavior of the invertebrate, where a compound that modulates the geotactic behavior of the invertebrate is characterized as a compound that modulates a mammalian vestibular system.

Abstract: The invention provides a method of identifying a compound that alters vigilance. The method consists of contacting an invertebrate with a candidate compound, evaluating a vigilance property in the contacted invertebrate, and determining if the candidate compound alters the vigilance property in the contacted invertebrate. A candidate compound that alters the vigilance property in the contacted invertebrate is identified as a compound that alters vigilance. The invention also provides a method of identifying a vigilance enhancing compound that modulates homeostatic regulation or a vigilance diminishing compound that modulates homeostatic regulation. The method consists of contacting an invertebrate with a compound that increases or decreases vigilance, and determining the effect of the compound on a homeostatic regulatory property of vigilance.

Abstract: The invention provides a method of identifying a compound that alters vigilance. The method consists of contacting an invertebrate with a candidate compound, evaluating a vigilance property in the contacted invertebrate, and determining if the candidate compound alters the vigilance property in the contacted invertebrate. A candidate compound that alters the vigilance property in the contacted invertebrate is identified as a compound that alters vigilance. The invention also provides a method of identifying a vigilance enhancing compound that modulates homeostatic regulation or a vigilance diminishing compound that modulates homeostatic regulation. The method consists of contacting an invertebrate with a compound that increases or decreases vigilance, and determining the effect of the compound on a homeostatic regulatory property of vigilance.

Abstract: The invention provides a method of identifying a compound that modulates a disease associated with a nitric oxide/cGMP-dependent protein kinase network in a mammal. The method consists of (a) administering a test compound to an invertebrate; and (b) measuring a foraging behavior of the invertebrate, wherein a compound that modulates the foraging behavior of the invertebrate is characterized as a compound that modulates a disease associated with a nitric oxide/cGMP-dependent protein kinase network in a mammal.

Abstract: The present invention provides a method of identifying a compound that modulates a mammalian vestibular system. The method consists of administering a test compound to an invertebrate, and measuring a geotactic behavior of the invertebrate, where a compound that modulates the geotactic behavior of said invertebrate is characterized as a compound that modulates a mammalian vestibular system.

Abstract: The present invention provides a method of identifying a compound that modulates a mammalian vestibular system. The method consists of administering a test compound to an invertebrate, and measuring a geotactic behavior of the invertebrate, where a compound that modulates the geotactic behavior of the invertebrate is characterized as a compound that modulates a mammalian vestibular system.

Abstract: The present invention provides a novel genetic method for mapping a network of functional gene interactions relating to Alzheimer's disease. Further provided by the invention is a screening method for identifying therapeutic agents for treating Alzheimer's disease.

Abstract: The invention provides novel isolated vigilance nucleic acid molecules, and kits containing two or more isolated vigilance nucleic acid molecules. Methods for diagnosing and treating vigilance disorders, for determining and altering vigilance levels, and for screening for therapeutic compounds useful for treating vigilance disorders and altering vigilance level, are also provided. The diagnostic, therapeutic and screening methods of the invention involve determining expression or activity profiles of vigilance genes.