Slow potential correlates of attention dysfunction in senile dementia: I

The EEG was recorded within a CNV (S1-S2-MR) paradigm in 10 seniles and 10 normal elderly subjects. The presence of the CNV in senile patients was confirmed. The seniles' CNV amplitude and latency differed from the normals and suggested that the seniles were less able to efficiently maintain and shift preparatory set, and this was also reflected in their much longer reaction time scores. However some adaptation particularly on CNV peak latency was observed in the seniles across trials.