P3 recordings in patients with bilateral temporal lobe lesions. 
We recorded event-related potentials to an acoustic "oddball" paradigm from 19 scalp derivations in five patients (three women and two men; age range, 44 to 56) who had global amnesia following encephalitis.  CT and MRI showed severe bilateral lesions of anterior and midtemporal lobes.  A P3 component, with a peak latency within the normal limits for age-matched controls, was recorded to "target" stimuli in four patients from all leads except Fp1, Fp2, F7, F8, T3, and T4.  In the fifth patient, the P3 peak was delayed.