We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleMu and delta opioid receptors oppositely regulate motor impulsivity in the signaled nose poke task.AuthorsOlmstead MC; Ouagazzal AM; Kieffer BLPublicationPloS one, 2009, Vol 4, Issue 2, pe4410ISSN1932-6203Publication typearticleDOI10.1371/journal.pone.0004410