PMID- 6542076 OWN - NLM STAT- MEDLINE DCOM- 19841226 LR - 20190919 IS - 0167-8760 (Print) IS - 0167-8760 (Linking) VI - 1 IP - 2 DP - 1984 Feb TI - Interactions between target and masking stimuli: perceptual and event-related potential effects. PG - 153-62 AB - TWo separate experiments were conducted to determinge the nature of the visual event related potential (ERP) at two different cortical areas under conditions of backward visual masking and to see the effects of varied inter-stimulus-intervals (ISIs) upon both masking and the ERP. The results of the first experiment clearly demonstrated visual ERP attenuation at a target-mask ISI of 40 ms, an ISI which consistently produced masking. Both experiments showed that this effect was specific for the occipital recording site since amplitude reductions were not observed at the vertex under this condition. The mask alone condition produced the largest amplitude ERPs in both experiments. Again, this was specific for Oz. In the second experiment target-mask ISIs which did not produce backward masking (i.e., 10 ms and 100 ms) were not accompanied by ERP amplitude reductions. The results may be explained by a cortical excitatory-inhibitory model. That is, when successive stimuli are presented to the visual system, the visual cortical excitation produced by the initial stimuli is inhibited by the presentation of subsequent stimuli when temporal and spatial intervals are appropriate. FAU - Andreassi, J L AU - Andreassi JL LA - eng PT - Journal Article PT - Research Support, U.S. Gov't, Non-P.H.S. PL - Netherlands TA - Int J Psychophysiol JT - International journal of psychophysiology : official journal of the International Organization of Psychophysiology JID - 8406214 SB - IM MH - *Evoked Potentials, Visual MH - Female MH - Humans MH - Male MH - Models, Neurological MH - Neural Inhibition MH - Perceptual Masking/*physiology MH - Reaction Time/physiology MH - Visual Perception/*physiology EDAT- 1984/02/01 00:00 MHDA- 1984/02/01 00:01 CRDT- 1984/02/01 00:00 PHST- 1984/02/01 00:00 [pubmed] PHST- 1984/02/01 00:01 [medline] PHST- 1984/02/01 00:00 [entrez] AID - 0167-8760(84)90035-7 [pii] AID - 10.1016/0167-8760(84)90035-7 [doi] PST - ppublish SO - Int J Psychophysiol. 1984 Feb;1(2):153-62. doi: 10.1016/0167-8760(84)90035-7.