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Both M\n                    <jats:sub>4<\/jats:sub>\n                    and M\n                    <jats:sub>5<\/jats:sub>\n                    mAChRs have been highlighted as potential novel treatment targets for alcohol use disorders (AUD). Similarly, M\n                    <jats:sub>1<\/jats:sub>\n                    mAChRs are expressed throughout reward circuitry, and their signaling has been implicated in cocaine consumption. However, whether the same effects are seen for alcohol consumption, or whether natural reward intake is inadvertently impacted is still unknown. To determine the role of M\n                    <jats:sub>1<\/jats:sub>\n                    mAChRs in alcohol consumption, we tested operant self\u2010administration of alcohol under both fixed ratio (FR3) and progressive ratio (PR3\u20104) schedules. Enhancing M\n                    <jats:sub>1<\/jats:sub>\n                    mAChR signaling (via the M\n                    <jats:sub>1<\/jats:sub>\n                    PAM\u2010Agonist PF\u201006767832, 1\u00a0mg\/kg, i.p.) reduced operant alcohol consumption on a fixed schedule but had no effect on motivation to acquire alcohol. To determine whether these actions were specific to alcohol, we examined the effects of M\n                    <jats:sub>1<\/jats:sub>\n                    enhancement on natural reward (sucrose) self\u2010administration. Systemic administration of PF\u201006767832 (1\u00a0mg\/kg, i.p.) also reduced operant sucrose self\u2010administration, suggesting the actions of the M\n                    <jats:sub>1<\/jats:sub>\n                    receptor may be non\u2010selective across drug and natural rewards. Finally, to understand whether this reduction extended to natural consummatory behaviors, we assessed home cage standard chow and water consumption. M\n                    <jats:sub>1<\/jats:sub>\n                    enhancement via systemic PF\u201006767832 administration reduced food and water consumption. Together our results suggest the M\n                    <jats:sub>1<\/jats:sub>\n                    PAM\u2010agonist, PF\u201006767832, non\u2010specifically reduces consummatory behaviors that are not associated with motivational strength for the reward. These data highlight the need to further characterize M\n                    <jats:sub>1<\/jats:sub>\n                    agonists, PAMs, and PAM\u2010agonists, which may have varying degrees of utility in the treatment of neuropsychiatric disorders including AUD.\n                  <\/jats:p>","DOI":"10.1002\/prp2.907","type":"journal-article","created":{"date-parts":[[2021,12,27]],"date-time":"2021-12-27T23:53:11Z","timestamp":1640649191000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["M\n                    <sub>1<\/sub>\n                    muscarinic receptor activation decreases alcohol consumption via a reduction in consummatory behavior"],"prefix":"10.1002","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9282-2743","authenticated-orcid":false,"given":"Leigh C.","family":"Walker","sequence":"first","affiliation":[{"name":"Florey Institute of Neuroscience and Mental Health  Parkville 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Neuroscience and Mental Health  Parkville Australia"},{"name":"Florey Department of Neuroscience and Mental Health University of Melbourne  Parkville Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christopher J.","family":"Langmead","sequence":"additional","affiliation":[{"name":"Drug Discovery Biology Monash Institute of Pharmaceutical Sciences Monash University  Parkville Victoria Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6836-727X","authenticated-orcid":false,"given":"Andrew J.","family":"Lawrence","sequence":"additional","affiliation":[{"name":"Florey Institute of Neuroscience and Mental Health  Parkville Australia"},{"name":"Florey Department of Neuroscience and Mental Health University of Melbourne  Parkville 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