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Publications [#277395] of Redford B. Williams

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Journal Articles

  1. Poon, LW; Thompson, LW; Jr, RBW; Marsh, GR (1974). Changes of antero posterior distribution of CNV and late positive component as a function of information processing demands. PSYCHOPHYSIOLOGY, 11(6), 660-673.
    (last updated on 2019/02/20)

    Abstract:
    The topographic distribution of the amplitudes of the contingent negative variation (CNV) recorded along the midline of the anterior, central, and posterior regions of the human scalp varied as a function of type of information processing demanded. A parietal dominant CNV was found when active problem solving behavior was required. A central dominant CNV was evident in a disjunctive reaction time task. The results are interpreted as evidence supporting a model of cortical function which predicts shifts in cortical involvement as a function of type of task demands. A late positive component (LPC) of the average evoked potential was also found to vary as a function of stage of learning, recording sites, and an attitudinal dimension measured by Rotter's internal external locus of control scale.


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