Hello everyone,
I have an experiment in which participants saw brand names and make decisions about buying or not. You can find at the attachment P07 channel graphs of grand average (with 20 participant), it seems interesting to me that P300 seems does not evoked. Does the graph seems normal to you? and is it usual to not have p300 for some cases (I mean for halthy people).
Thank you for your interest and helps.
Best,
I think this is a P200 as its scalp map indicates and also the time line for that peak is 230-280 and I think this is a bit too early for p300
Please show the ERP curves from different locations on the scalp in the same paradigm. Is it a visual test?
You can find some other parts of ERPS, it is not a visiul one participants see the name of brand decide to buy or not and thier age change between 21-24.
Best
According to the presented article, the definition of peak latency is not correct for late ERP components.
You may be interested in this recent paper, that puts in perspective that when the amygdala is activated by a verbal stimulus as in these cases, the P300 peak has been found to be followed by a N400 signal corresponding to cogitation about the verbal stimulus:
https://doi.org/10.4236/ce.2019.102028
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