Negative correlation of P50 peak latencies and reaction times in a simple reaction task

Hideaki Ninomiya, Chung Ho Chen, Toshiaki Onitsuka, Atsushi Ichimiya

    Research output: Contribution to journalArticlepeer-review

    7 Citations (Scopus)


    We investigated the influence of stimulus characteristics and tasks (count and simple reaction tasks) on auditory P50. Ten normal volunteers served as subjects. EEGs and auditory evoked potentials were obtained from Fz, Cz, Pz, C3, C4, T3 and T4 referred to linked earlobes (LE) and balanced non-cephalic (BN) electrodes. In the recordings using a BN reference there were significant negative correlations between the reaction times and P50 Peak latencies at Fz, Cz, Pz, C3 and C4. In the LE reference recordings there were negative correlations but these did not reach statistical significance. The results are discussed with reference to the activation of the LE reference and the neural sources of P50. The findings suggest the possibility that reaction times are determined at the very early stage of auditory information processing.

    Original languageEnglish
    Pages (from-to)74-77
    Number of pages4
    JournalElectroencephalography and Clinical Neurophysiology - Evoked Potentials
    Issue number1
    Publication statusPublished - 1996

    All Science Journal Classification (ASJC) codes

    • General Neuroscience
    • Clinical Neurology


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