Increased corticospinal excitability induced by unpleasant visual stimuli

Coelho, Carlos M., Lipp, Ottmar V., Marinovic, Welber, Wallis, Guy and Riek, Stephan (2010) Increased corticospinal excitability induced by unpleasant visual stimuli. Neuroscience Letters, 481 3: 135-138. doi:10.1016/j.neulet.2010.03.027

Author Coelho, Carlos M.
Lipp, Ottmar V.
Marinovic, Welber
Wallis, Guy
Riek, Stephan
Title Increased corticospinal excitability induced by unpleasant visual stimuli
Journal name Neuroscience Letters   Check publisher's open access policy
ISSN 0304-3940
Publication date 2010-09
Sub-type Article (original research)
DOI 10.1016/j.neulet.2010.03.027
Volume 481
Issue 3
Start page 135
End page 138
Total pages 4
Place of publication Amsterdam
Publisher Elsevier/North-Holland
Collection year 2011
Language eng
Formatted 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. (C) 2010 Published by Elsevier Ireland Ltd.
Keyword Transcranial magnetic stimulation
Action preparation
Corticospinal excitability
Transcranial Magnetic Stimulation
Motor Cortex Excitability
Startle Reflex
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

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Created: Sun, 12 Sep 2010, 00:01:52 EST