Age-related changes in the electrophysiological response to visual stimulus novelty: A topographical approach

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Age-related changes in the electrophysiological response to visual stimulus novelty: A topographical approach

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dc.contributor.author Thomas, Kathleen M.
dc.contributor.author Nelson, Charles A.
dc.date.accessioned 2018-02-23T20:59:55Z
dc.date.issued 1996
dc.identifier Quick submit: 2013-09-16T15:12:06-04:00
dc.identifier.citation Thomas, Kathleen M., and Charles A. Nelson. 1996. “Age-Related Changes in the Electrophysiological Response to Visual Stimulus Novelty: A Topographical Approach.” Electroencephalography and Clinical Neurophysiology 98 (4) (April): 294–308. doi:10.1016/0013-4694(95)00280-4. en_US
dc.identifier.issn 0013-4694 en_US
dc.identifier.uri http://nrs.harvard.edu/urn-3:HUL.InstRepos:34865299
dc.description.abstract The relationship of task relevance and stimulus probability to P300 morphology, latency and distribution was assessed. Eight year olds and adults completed visual oddball tasks of recognition memory with frequent non-target (60%), infrequent target (20%), and infrequent novel (20%) stimuli. Stimuli consisted of 2 female faces posing neutral expressions, and 40 trial unique novel photographs depicting scenes, animals, objects or abstract patterns. Event-related potentials were recorded from 17 electrodes over frontal, central and parietal scalp, including lateral temporal sites. All stimuli elicited P300 responses at parietal electrodes, with the largest responses to the target stimuli (relevant and infrequent). The P300 responses of adults and children were morphologically dissimilar, with children showing broader peaks and latency shifts across electrodes. In addition, the eight year olds displayed a frontal negativity to novel stimuli which was absent in the responses of adult participants. Results suggest that different anatomical or functional circuitry may be involved in the processing of novelty for adults as compared to eight year olds. en_US
dc.language.iso en_US en_US
dc.publisher Elsevier BV en_US
dc.relation.isversionof doi:10.1016/0013-4694(95)00280-4 en_US
dash.license META_ONLY
dc.subject Visual stimulus novelty en_US
dc.subject Task relevance en_US
dc.subject Stimulus probability en_US
dc.subject Electrophysiological response en_US
dc.subject P300 en_US
dc.title Age-related changes in the electrophysiological response to visual stimulus novelty: A topographical approach en_US
dc.type Journal Article en_US
dc.date.updated 2013-09-16T19:12:46Z
dc.description.version Version of Record en_US
dc.rights.holder Thomas KM, & Nelson CA
dc.relation.journal Electroencephalography and Clinical Neurophysiology en_US
dash.depositing.author Nelson, Charles A.
dash.embargo.until 10000-01-01

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