TY - JOUR
T1 - Influence of reference electrodes, stimulation characteristics and task paradigms on auditory P50
AU - Chen, Chung Ho
AU - Ninomiya, Hideaki
AU - Onitsuka, Toshiaki
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1997
Y1 - 1997
N2 - To clarify the nature of auditory P50, middle latency auditory evoked potentials were recorded by using different condition of reference electrodes (linked earlobes, LE; balanced non-cephalic, BN), stimulation characteristics (tone burst, human voice) and tasks (counting, simple reaction) in 10 right- handed males (aged 21-36 years). EEG was recorded from Fz, Cz, Pz, C3, C4, T3 and T4 according to the 10-20 system. Two groups of electrode sites were made for the statistical analysis: a midline group. Fz, Cz and Pz; and a lateral group, T3, C3, Cz, C4 and T4. The results were that the P50 amplitudes with BN electrodes were significantly higher than those with LE in both groups (midline, P<0.01; lateral, P<0.01); the P50 amplitudes by voice stimulations were significantly higher than those by tone stimulation in the lateral group (P<0.05), and the P50 latencies under a simple reaction paradigm were significantly shorter than those under a counting task in both groups (midline, P<0.05; lateral, P<0.05). These results suggest that various factors including motor response affect the P50 amplitudes and latencies.
AB - To clarify the nature of auditory P50, middle latency auditory evoked potentials were recorded by using different condition of reference electrodes (linked earlobes, LE; balanced non-cephalic, BN), stimulation characteristics (tone burst, human voice) and tasks (counting, simple reaction) in 10 right- handed males (aged 21-36 years). EEG was recorded from Fz, Cz, Pz, C3, C4, T3 and T4 according to the 10-20 system. Two groups of electrode sites were made for the statistical analysis: a midline group. Fz, Cz and Pz; and a lateral group, T3, C3, Cz, C4 and T4. The results were that the P50 amplitudes with BN electrodes were significantly higher than those with LE in both groups (midline, P<0.01; lateral, P<0.01); the P50 amplitudes by voice stimulations were significantly higher than those by tone stimulation in the lateral group (P<0.05), and the P50 latencies under a simple reaction paradigm were significantly shorter than those under a counting task in both groups (midline, P<0.05; lateral, P<0.05). These results suggest that various factors including motor response affect the P50 amplitudes and latencies.
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U2 - 10.1111/j.1440-1819.1997.tb02376.x
DO - 10.1111/j.1440-1819.1997.tb02376.x
M3 - Article
C2 - 9225378
AN - SCOPUS:0030900399
VL - 51
SP - 139
EP - 143
JO - Psychiatry and Clinical Neurosciences
JF - Psychiatry and Clinical Neurosciences
SN - 1323-1316
IS - 3
ER -