Priming does not enhance the efficacy of 1 Hertz repetitive transcranial magnetic stimulation for the treatment of auditory verbal hallucinations: Results of a randomized controlled study

Christina Wilhelmina Slotema*, Jan Dirk Blom, Antoin Dave de Weijer, Hans Wijbrand Hoek, Iris Else Sommer

*Bijbehorende auteur voor dit werk

    OnderzoeksoutputAcademicpeer review

    11 Citaten (Scopus)

    Samenvatting

    Background

    Low-frequency repetitive transcranial magnetic stimulation (rTMS) applied to the left temporoparietal area (TP) has been investigated as a treatment method for auditory verbal hallucinations (AVH) yielding inconsistent results. In vitro studies have indicated that the effects of low-frequency rTMS can be enhanced by a brief pretreatment phase consisting of high-frequency rTMS (i.e., priming rTMS).

    Objective

    The aim of this single-blind, randomized controlled study was to investigate whether the effects of rTMS on AVH can be enhanced with priming rTMS.

    Methods

    Twenty-three patients with medication-resistant AVH were randomized over two groups: one receiving low-frequency rTMS preceded by 5 minutes of 6 Hertz rTMS; and another receiving low-frequency rTMS without priming. Both treatments were directed at the left TP. The total duration of stimulation was equal in the two groups, namely, 15 sessions of 20 minutes each. The severity of AVH and other psychotic features were measured with the aid of the Auditory Hallucination Rating Scale (AHRS), the Positive and Negative Syndrome Scale (PANSS) and the Psychotic Symptom Rating Scales (PSYRATS).

    Results

    The severity of AVH and other psychotic symptoms in the group with priming was not significantly lower after 3 weeks of treatment in comparison to baseline. The group treated with standard rTMS showed a trend toward improvement after 3 weeks of treatment. No significant differences were observed on any of the rating scales between the group with and without priming.

    Conclusions

    This study does not provide evidence that priming rTMS is an effective treatment for AVH. (C) 2012 Elsevier Inc. All rights reserved.

    Originele taal-2English
    Pagina's (van-tot)554-559
    Aantal pagina's6
    TijdschriftBrain stimulation
    Volume5
    Nummer van het tijdschrift4
    DOI's
    StatusPublished - okt-2012

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