P300, stimulus intensity, modality, and probability
J Polich, PC Ellerson, J Cohen�- International Journal of Psychophysiology, 1996 - Elsevier
Auditory and visual stimulus intensity were manipulated factorially with target probability to
assess the influence of these variables on the P300 component of the event-related brain
potential (ERP). Increases in stimulus intensity produced reliable increases in P300
amplitude and decreases in peak latency for both modalities that were additive with target
stimulus probability effects. Similar, somewhat weaker stimulus intensity effects also were
observed for the N100, P200, and N200 components. The findings suggest that stimulus�…
assess the influence of these variables on the P300 component of the event-related brain
potential (ERP). Increases in stimulus intensity produced reliable increases in P300
amplitude and decreases in peak latency for both modalities that were additive with target
stimulus probability effects. Similar, somewhat weaker stimulus intensity effects also were
observed for the N100, P200, and N200 components. The findings suggest that stimulus�…
P300, stimulus intensity, and modality
JW Covington, J Polich�- Electroencephalography and Clinical�…, 1996 - Elsevier
Auditory and visual stimulus intensity levels were manipulated systematically in separate
conditions to assess the influence of these variables on the P300 event-related brain
potential (ERP). Increases in stimulus intensity produced increases in P300 amplitude and
decreases in peak latency for both modalities, although the latency effects were stronger for
visual stimulation. Similar, somewhat weaker stimulus intensity effects also were observed
for the N100, P200, and N200 components. The findings suggest that stimulus intensity�…
conditions to assess the influence of these variables on the P300 event-related brain
potential (ERP). Increases in stimulus intensity produced increases in P300 amplitude and
decreases in peak latency for both modalities, although the latency effects were stronger for
visual stimulation. Similar, somewhat weaker stimulus intensity effects also were observed
for the N100, P200, and N200 components. The findings suggest that stimulus intensity�…