c-Fos After Incentive Shifts: Expectancy, Incredulity, and Recovery.
Rats were used in a successive negative contrast procedure to determine which brain structures were activated by sucrose concentration downshifts, and on what day this occurred. Subjects were given preshift solutions for 12 days before being shifted to their postshift concentrations. Groups included...
| Publicado en: | Behavioral Neuroscience Vol. 119; no. 2; pp. 366 - 388 |
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| Autores principales: | , |
| Formato: | Artículo |
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American Psychological Association
April 2005
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=506572645&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 506572645 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 07357044 BEN jtl: Behavioral Neuroscience issn: 07357044 maglogo: N pubinfo: dt: April 2005 vid: 119 iid: 2 pid: 34 pub: American Psychological Association artinfo: ui: 506572645 10.1037/0735-7044.119.2.366 ppf: 366 ppct: 22 formats: tig: atl: c-Fos After Incentive Shifts: Expectancy, Incredulity, and Recovery. aug: au: Pecoraro, Norman Dallman, Mary F. su: Brain function localization Laboratory rats Fos oncogenes Expectation (Psychology) sug: subj: Brain function localization Laboratory rats Fos oncogenes Expectation (Psychology) ab: Rats were used in a successive negative contrast procedure to determine which brain structures were activated by sucrose concentration downshifts, and on what day this occurred. Subjects were given preshift solutions for 12 days before being shifted to their postshift concentrations. Groups included 2 unshifted controls (32%-32% and 4%-4%) and 1 shifted group (32%-4%). Half of each group was killed 1 hr after the first exposure to the shifted solution (Shift 1), and half after the second exposure (Shift 2). Brains were processed for c-Fos-like immunoreactivity (FLI). Two major patterns emerged. Terminal drinking of 32% sucrose activated minimal brainstem regions involved in palatable taste, visceral feedback, and fluid homeostasis. In contrast, shifted subjects showed extensive cortical activation with selective activation in cerebral nuclei and brainstem. Robust FLI on Shift 1 was absent on Shift 2, consistent with evidence for rapid (1-trial) changes in all major motor outputs mediated by expectancy. Reprinted by permission of the publisher. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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