"Event-related potentials were recorded from 560 cerebral sites in 17 patients suffering from intractable epilepsy during visual oddball task. Potentials evoked by the target stimuli were sorted according to button-pressing response times, and the P3 waveform was analyzed both in stimulus-locked and response-locked averages, which were separately averaged for fast and slow responses. P3-like waveforms were identified in 180 sites in 17 patients. Three different types of P3-like waveforms, diffusely distributed within the brain, were found: (1) time-locked to the stimulus (30 sites in 11 patients); (2) time-locked to the motor response (52 sites in 13 patients); and (3) with ambiguous time relationship to stimulus and motor response (98 sites in 16 patients). The intracerebral P3-like waveform could represent different processes involved in performing active oddball tasks. Therefore, our results support the hypothesis that the P3 waveform could be a heterogeneous phenomenon." . "[D527F91AE4E5]" . "RIV/00216224:14110/05:00014815!RIV10-MSM-14110___" . . "Intracerebral P3-like waveforms and the length of the stimulus-response interval in a visual oddball paradigm."@en . "14110" . "Rektor, Ivan" . "Jur\u00E1k, Pavel" . "Intracerebral P3-like waveforms and the length of the stimulus-response interval in a visual oddball paradigm."@en . "Kukleta, Miloslav" . . "1" . "P3 waveform; ERPs; Intracerebral recordings; Visual oddball paradigm"@en . "P(GA102/05/0402), Z(MSM 141100001), Z(MSM0021622404)" . "1388-2457" . . . . "4"^^ . . . . . "RIV/00216224:14110/05:00014815" . "11"^^ . . . "Intracerebral P3-like waveforms and the length of the stimulus-response interval in a visual oddball paradigm." . . . "5"^^ . . . . "Br\u00E1zdil, Milan" . . . "Event-related potentials were recorded from 560 cerebral sites in 17 patients suffering from intractable epilepsy during visual oddball task. Potentials evoked by the target stimuli were sorted according to button-pressing response times, and the P3 waveform was analyzed both in stimulus-locked and response-locked averages, which were separately averaged for fast and slow responses. P3-like waveforms were identified in 180 sites in 17 patients. Three different types of P3-like waveforms, diffusely distributed within the brain, were found: (1) time-locked to the stimulus (30 sites in 11 patients); (2) time-locked to the motor response (52 sites in 13 patients); and (3) with ambiguous time relationship to stimulus and motor response (98 sites in 16 patients). The intracerebral P3-like waveform could represent different processes involved in performing active oddball tasks. Therefore, our results support the hypothesis that the P3 waveform could be a heterogeneous phenomenon."@en . "Clinical Neurophysiology" . "525506" . . "Intracerebral P3-like waveforms and the length of the stimulus-response interval in a visual oddball paradigm." . . "116/2005" . "IE - Irsko" . . . "Roman, Robert" . "000226156500020" .