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dc.contributor.authorHaimson, Barry
dc.contributor.authorWilkinson, Krista M.
dc.contributor.authorRosenquist, Celia
dc.contributor.authorOuimet, Carolyn
dc.contributor.authorMcIlvane, William J.
dc.date2022-08-11T08:10:53.000
dc.date.accessioned2022-08-23T17:23:38Z
dc.date.available2022-08-23T17:23:38Z
dc.date.issued2009-09-01
dc.date.submitted2011-07-08
dc.identifier.citationJ Exp Anal Behav. 2009 Sep;92(2):245-56. <a href="http://dx.doi.org/10.1901/jeab.2009.92-245">Link to article on publisher's site</a>
dc.identifier.issn0022-5002 (Linking)
dc.identifier.doi10.1901/jeab.2009.92-245
dc.identifier.pmid20354602
dc.identifier.urihttp://hdl.handle.net/20.500.14038/49005
dc.description.abstractResearch reported here concerns neural processes relating to stimulus equivalence class formation. In Experiment 1, two types of word pairs were presented successively to normally capable adults. In one type, the words had related usage in English (e.g., uncle, aunt). In the other, the two words were not typically related in their usage (e.g., wrist, corn). For pairs of both types, event-related cortical potentials were recorded during and immediately after the presentation of the second word. The obtained waveforms differentiated these two types of pairs. For the unrelated pairs, the waveforms were significantly more negative about 400 ms after the second word was presented, thus replicating the "N400" phenomenon of the cognitive neuroscience literature. In addition, there was a strong positive-tending wave form difference post-stimulus presentation (peaked at about 500 ms) that also differentiated the unrelated from related stimulus pairs. In Experiment 2, the procedures were extended to study arbitrary stimulus-stimulus relations established via matching-to-sample training. Participants were experimentally naive adults. Sample stimuli (Set A) were trigrams, and comparison stimuli (Sets B, C, D, E, and F) were nonrepresentative forms. Behavioral tests evaluated potentially emergent equivalence relations (i.e., BD, DF, CE, etc.). All participants exhibited classes consistent with the arbitrary matching training. They were also exposed also to an event-related potential procedure like that used in Experiment 1. Some received the ERP procedure before equivalence tests and some after. Only those participants who received ERP procedures after equivalence tests exhibited robust N400 differentiation initially. The positivity observed in Experiment 1 was absent for all participants. These results support speculations that equivalence tests may provide contextual support for the formation of equivalence classes including those that emerge gradually during testing.
dc.language.isoen_US
dc.relation<a href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&list_uids=20354602&dopt=Abstract">Link to Article in PubMed</a>
dc.relation.urlhttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC2732323/pdf/jeab-92-02-245.pdf
dc.subjectAdult
dc.subjectBrain Mapping
dc.subjectDiscrimination Learning
dc.subjectElectroencephalography
dc.subjectEvoked Potentials, Visual
dc.subjectFeedback, Psychological
dc.subjectFemale
dc.subjectHumans
dc.subjectMale
dc.subjectPhotic Stimulation
dc.subjectReaction Time
dc.subject*Semantics
dc.subjectVerbal Behavior
dc.subjectVisual Perception
dc.subjectMental and Social Health
dc.subjectNeuroscience and Neurobiology
dc.subjectPsychiatry and Psychology
dc.titleElectrophysiological correlates of stimulus equivalence processes
dc.typeJournal Article
dc.source.journaltitleJournal of the experimental analysis of behavior
dc.source.volume92
dc.source.issue2
dc.identifier.legacycoverpagehttps://escholarship.umassmed.edu/shriver_pp/8
dc.identifier.contextkey2092311
html.description.abstract<p>Research reported here concerns neural processes relating to stimulus equivalence class formation. In Experiment 1, two types of word pairs were presented successively to normally capable adults. In one type, the words had related usage in English (e.g., uncle, aunt). In the other, the two words were not typically related in their usage (e.g., wrist, corn). For pairs of both types, event-related cortical potentials were recorded during and immediately after the presentation of the second word. The obtained waveforms differentiated these two types of pairs. For the unrelated pairs, the waveforms were significantly more negative about 400 ms after the second word was presented, thus replicating the "N400" phenomenon of the cognitive neuroscience literature. In addition, there was a strong positive-tending wave form difference post-stimulus presentation (peaked at about 500 ms) that also differentiated the unrelated from related stimulus pairs. In Experiment 2, the procedures were extended to study arbitrary stimulus-stimulus relations established via matching-to-sample training. Participants were experimentally naive adults. Sample stimuli (Set A) were trigrams, and comparison stimuli (Sets B, C, D, E, and F) were nonrepresentative forms. Behavioral tests evaluated potentially emergent equivalence relations (i.e., BD, DF, CE, etc.). All participants exhibited classes consistent with the arbitrary matching training. They were also exposed also to an event-related potential procedure like that used in Experiment 1. Some received the ERP procedure before equivalence tests and some after. Only those participants who received ERP procedures after equivalence tests exhibited robust N400 differentiation initially. The positivity observed in Experiment 1 was absent for all participants. These results support speculations that equivalence tests may provide contextual support for the formation of equivalence classes including those that emerge gradually during testing.</p>
dc.identifier.submissionpathshriver_pp/8
dc.contributor.departmentShriver Center
dc.source.pages245-56


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