Table 2 summarizes the behavioral performance for both groups and modalities. Both patients and controls distinguished old from new items well above chance for both modalities, as can be seen from both the correct responses for old items and the sensitivity measure (dL). Still, patients’ accuracy was significantly poorer compared to controls, and this performance impairment was not affected by modality. Patients had also about 200-ms longer response latencies than controls, but this overall group difference did not interact with modality or condition. However, as expected, mean response latency was about 200–300 ms longer for auditory than visual stimuli, and this modality effect interacted with condition.
