Event-related potentials and the phonological matching of picture names.
Event-related potentials (ERPs) were recorded from one midline and three pairs of lateral electrodes while subjects determined whether a pair of sequentially presented pictures had rhyming or nonrhyming names. During the 1.56-sec interval between the two pictures, the slow ERP wave recorded over the left hemisphere was more negative-going than that over the right, especially at frontal electrodes. The ERPs evoked by the second picture differed as a function of whether its name rhymed with its predecessor. This difference, taking the form of increased negativity in ERPs to nonrhyming items, had an earlier onset and a greater magnitude at right than at left hemisphere electrodes. This pattern of ERP asymmetries is qualitatively similar to that found when words are rhyme-matched. It is therefore concluded that such asymmetries do not depend on the employment of orthographic material and may reflect some aspect(s) of the phonological processing of visually presented material.
Barrett
S E
SE
Department of Psychology, University of St. Andrews, Fife, United Kingdom.
Rugg
M D
MD
D000293:Adolescent; D000328:Adult; D001143:Arousal / Q000502:physiology*; D001288:Attention / Q000502:physiology*; D001931:Brain Mapping; D002540:Cerebral Cortex / Q000502:physiology; D003265:Contingent Negative Variation / Q000502:physiology; D004193:Discrimination Learning / Q000502:physiology; D004292:Dominance, Cerebral / Q000502:physiology*; D004569:Electroencephalography; D005260:Female; D005556:Form Perception / Q000502:physiology*; D006801:Humans; D008297:Male; D010153:Paired-Associate Learning / Q000502:physiology; D010364:Pattern Recognition, Visual / Q000502:physiology*; D010700:Phonetics; D012660:Semantics