Increased corticospinal excitability induced by unpleasant visual stimuli

Carlos M Coelho; Ottmar V Lipp; Welber Marinovic; Guy Wallis; Stephan Riek

doi:10.1016/j.neulet.2010.03.027

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Increased corticospinal excitability induced by unpleasant visual stimuli

Journal article

Peer reviewed

Increased corticospinal excitability induced by unpleasant visual stimuli

Carlos M Coelho, Ottmar V Lipp, Welber Marinovic, Guy Wallis and Stephan Riek

Neuroscience Letters, Vol.481(3), pp.135-138

2010

DOI: https://doi.org/10.1016/j.neulet.2010.03.027

PMID: 20298754

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Abstract

Fear

Corticospinal excitability

Transcranial magnetic stimulation

Action preparation

Emotion

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.

Details

Title: Increased corticospinal excitability induced by unpleasant visual stimuli
Authors: Carlos M Coelho (Author) - University of Queensland
Ottmar V Lipp (Author) - University of Queensland
Welber Marinovic (Author) - University of Queensland
Guy Wallis (Author) - University of Queensland
Stephan Riek (Author) - University of Queensland
Publication details: Neuroscience Letters, Vol.481(3), pp.135-138
Publisher: Elsevier Ireland Ltd
DOI: 10.1016/j.neulet.2010.03.027
ISSN: 1872-7972
PMID: 20298754
Organisation Unit: University of the Sunshine Coast, Queensland; Graduate Research School
Language: English
Record Identifier: 99472603402621
Output Type: Journal article

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