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The loci of oscillatory visual-object priming: a combined electroencephalographic and reaction-time study

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dc.contributor.author Elliott, Mark en
dc.date.accessioned 2010-11-26T15:54:58Z en
dc.date.available 2010-11-26T15:54:58Z en
dc.date.issued 2000-12 en
dc.identifier.citation Elliott, M. A., Herrmann, C. S., Mecklinger, A., & Müller, H. J. (2000). The loci of oscillatory visual-object priming: a combined electroencephalographic and reaction-time study. International Journal of Psychophysiology, 38(3), 225-241. en
dc.identifier.issn 0167-8760 en
dc.identifier.uri http://hdl.handle.net/10379/1459 en
dc.description.abstract The detection of reaction-times (RTs) to a target Kanizsa-type square (an illusory square defined by the collinear arrangement of 90° corner junctions) within a matrix of distractor junctions are expedited when the target display is preceded by a 40-Hz flickering display of premask crosses presented prior to, and at the locations subsequently occupied by the junctions of the target display. Priming effects were obtained when four crosses (which together matched the Gestalt arrangement of the target) were presented at the display locations subsequently occupied by the junctions forming the target Kanizsa square (Elliott and Elliott). The present study was conducted with the aim of replicating the 40-Hz RT priming effects, while simultaneously recording the observers EEG in order to establish the presence and location of Gestalt priming in the brain. The statistical pattern obtained in the RT data corresponded well with previous studies and was matched by the pattern of target P300 latencies across bilateral central and posterior electrodes. Planned analyses focused upon the evoked 40-Hz activity that co-occurs with the P300, revealing a more specific pattern of 40-Hz priming over the visual cortex. A subsequent series of cross-correlational analyses examined the cortical distribution and timing of Gestalt-prime generation during and subsequent to premask-display presentation. Correlations were revealed between stimulus related 40-Hz activity over a range of cortical loci, including the right temporal lobe, which is considered important for figure coding. Taken together, these findings not only support the role of a distributed 40-Hz mechanism during Gestalt-figure priming, but also suggest that patterns of oscillatory brain activity may be directly influenced by, and interpretable in terms of equivalent temporal patterns of stimulus activity. en
dc.format application/pdf en
dc.language.iso en en
dc.publisher Elsevier en
dc.subject Psychology en
dc.subject Visual-Gestalt priming en
dc.subject Object coding en
dc.subject Kanizsa-type figure detection en
dc.subject Reaction time en
dc.subject EEG en
dc.subject Wavelet transform en
dc.subject Evoked gamma-band activity en
dc.title The loci of oscillatory visual-object priming: a combined electroencephalographic and reaction-time study en
dc.type Article en
dc.local.publishedsource http://dx.doi.org/10.1016/S0167-8760(00)00167-7 en
dc.description.peer-reviewed peer-reviewed en
dc.contributor.funder Deutsche Forschungsgemeinschaft project grant No. SCHR375r8-1 en

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