Comment on

• Use-dependent plasticity in clock neurons regulates sleep need in Drosophila.

  Donlea JM, Ramanan N, Shaw PJ. Donlea JM, et al. Science. 2009 Apr 3;324(5923):105-8. doi: 10.1126/science.1166657. Science. 2009. PMID: 19342592 Free PMC article.
• Widespread changes in synaptic markers as a function of sleep and wakefulness in Drosophila.

  Gilestro GF, Tononi G, Cirelli C. Gilestro GF, et al. Science. 2009 Apr 3;324(5923):109-12. doi: 10.1126/science.1166673. Science. 2009. PMID: 19342593 Free PMC article.