{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,10,31]],"date-time":"2023-10-31T10:12:56Z","timestamp":1698747176829},"reference-count":30,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2013,8,23]],"date-time":"2013-08-23T00:00:00Z","timestamp":1377216000000},"content-version":"vor","delay-in-days":295,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J Exper Analysis Behavior"],"published-print":{"date-parts":[[2012,11]]},"abstract":"<jats:p>When given to pigeons, the direct\u2010acting dopamine agonist apomorphine elicits pecking. The response has been likened to foraging pecking because it bears remarkable similarity to foraging behavior, and it is enhanced by food deprivation. On the other hand, other data suggest the response is not related to foraging behavior and may even interfere with food ingestion. Although elicited pecking interferes with food capture, it may selectively alter procurement phases of feeding, which can be isolated in operant preparations. To explore the relation between operant and elicited pecking, we provided pigeons the opportunity to earn different reinforcer magnitudes during experimental sessions. During signaled components, each of 4 pigeons could earn 2\u2010, 4\u2010, or 8\u2010s access to grain for a single peck made at the end of a 5\u2010min interval. In general, responding increased as a function of reinforcer magnitude. Apomorphine increased pecking for 2 pigeons and decreased pecking for the other 2. In both cases, apomorphine was more potent under the component providing the smallest reinforcer magnitude. Analysis of the pattern of pecking across the interval indicated that behavior lost its temporal organization as dose increased. Because apomorphine\u2010induced pecking varied inversely with reinforcer magnitude, we conclude that elicited pecks are not functionally related to food procurement. The data are consistent with the literature on behavioral resistance to change and suggest that the effects of apomorphine may be modulated by prevailing stimulus\u2014reinforcer relationships.<\/jats:p>","DOI":"10.1901\/jeab.2012.98-273","type":"journal-article","created":{"date-parts":[[2019,10,3]],"date-time":"2019-10-03T15:13:35Z","timestamp":1570115615000},"page":"273-282","update-policy":"http:\/\/dx.doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["REINFORCER MAGNITUDE ATTENUATES APOMORPHINE'S EFFECTS ON OPERANT PECKING"],"prefix":"10.1002","volume":"98","author":[{"given":"Jonathan W.","family":"Pinkston","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"R. 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