Published January 1, 1997 | Version v1
Journal article Open

The effects of subthreshold visual stimulation on P300 response

Description

THE effects of the subthreshold visual stimuli on the electrical activity of the brain were investigated by an oddball-like paradigm and a single-stimulus paradigm. In the oddball-like paradigm, suprathreshold and subthreshold stimuli were presented randomly where the suprathreshold stimulus probability was 0.24. The single-stimulus paradigm contained only the suprathreshold stimuli and was identical to the oddball-like paradigm apart from the absence of subthreshold stimuli. Suprathreshold P3b amplitude was larger for the oddball-like than for the single-stimulus condition particularly in the centro-parietal region. This result suggests that at least one component of the P300 wave could be assigned to an automatic comparison and memory updating process which runs unconsciously.

Files

bib-d07863f6-502c-43ad-8072-9ce4704924b1.txt

Files (139 Bytes)

Name Size Download all
md5:50f25b1630798428eebc555fff7bdaed
139 Bytes Preview Download