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[Decrease of latency of auditory evoked potentials in humans practicing transcendental meditation (author's transl]

A Wandhöfer, G Kobal, K H Plattig

    EEG-EMG Zeitschrift Fur Elektroenzephalographie, Elektromyographie Und Verwandte Gebiete
    |June 1, 1976
    PubMed
    Summary

    Transcendental meditation (TM) practice significantly shortens latencies in slow cortical auditory responses compared to dozing or normal consciousness. These findings suggest TM alters auditory processing speed.

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    Area of Science:

    • Neuroscience
    • Cognitive Psychology
    • Meditation Research

    Background:

    • Auditory evoked potentials (AEPs) reflect neural processing of sound.
    • Meditation practices, like transcendental meditation (TM), are known to influence cognitive functions.
    • Understanding the neural correlates of meditation is crucial for its application.

    Purpose of the Study:

    • To investigate the effects of transcendental meditation on slow cortical auditory responses.
    • To compare AEPs in TM practitioners with those in control groups under different states of consciousness.

    Main Methods:

    • Recording slow cortical auditory responses from human subjects.
    • Analyzing latencies of positive (P1, P2) and negative (N1, N2) peaks.
    • Measuring areas of on-effect (FON), off-effect (FOFF), and DC-shift (FDC).

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  • Comparing data from TM practitioners with control groups (dozing, normal consciousness).

    • Main Results:

    • Significantly shorter latencies for initial peaks (P1, N1, P2, N2) were observed during TM and normal consciousness compared to a dozing state.
    • Differences in other AEP parameters, such as amplitudes and areas, were also noted between groups.

    Conclusions:

    • Transcendental meditation practice is associated with faster auditory processing.
    • TM may modulate the speed of neural signal transmission in the auditory cortex.
    • These findings highlight the neurophysiological impact of meditation on sensory processing.