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    Increased corticospinal excitability induced by unpleasant visual stimuli

    Access Status
    Fulltext not available
    Authors
    Coelho, C.
    Lipp, Ottmar
    Marinovic, W.
    Wallis, G.
    Riek, S.
    Date
    2010
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Coelho, C. and Lipp, O. and Marinovic, W. and Wallis, G. and Riek, S. 2010. Increased corticospinal excitability induced by unpleasant visual stimuli. Neuroscience Letters. 481 (3): pp. 135-138.
    Source Title
    Neuroscience Letters
    DOI
    10.1016/j.neulet.2010.03.027
    ISSN
    0304-3940
    School
    School of Psychology and Speech Pathology
    URI
    http://hdl.handle.net/20.500.11937/11233
    Collection
    • Curtin Research Publications
    Abstract

    Pleasant and unpleasant emotional stimuli are frequently conceptualized as motivators for action. This notion was examined using focal transcranial magnetic stimulation (TMS). Ten healthy participants viewed pleasant, neutral, and unpleasant pictures from the International Affective Picture System (IAPS). During picture viewing, focal TMS was applied to the right motor cortex over the area innervating the first dorsal interosseous muscle of the left hand. Corticomotor excitability was larger while viewing negative pictures than while viewing neutral or positive images, as evidenced by greater motor evoked potentials. No difference was found between pleasant and neutral pictures. These results are consistent with models of emotion in which the neural networks underlying negative emotions have selective, direct connections to brain structures that mediate motor responses. © 2010.

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