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  High-density electrical mapping during active and passive self-motion

Butler, J., Desanctis, P., Nolan, H., Whelan, R., Bülthoff, H., Reilly, O., et al. (2012). High-density electrical mapping during active and passive self-motion. In 42nd Annual Meeting of the Society for Neuroscience (Neuroscience 2012).

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Butler, JS, Author           
Desanctis, P, Author
Nolan, H, Author
Whelan, R, Author
Bülthoff, HH1, 2, Author           
Reilly, O, Author
Foxe, J, Author
1Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              


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 Abstract: The perception of self-motion is a product of the integration of information from both visual and nonvisual cues, to which the vestibular system is a central contributor. It is well documented that self-motion dysfunction leads to impaired movement and balance, dizziness and falls, and yet our knowledge of the neuronal processing of self-motion signals remains relatively sparse. Here we present two studies extending an emerging line of research trying to obtain electroencephalographic (EEG) recordings while participants engage in real-world tasks. The first study investigated the feasibility of acquiring high-density event-related brain potential (ERP) recordings during treadmill walking. Participants performed a visual response inhibition task - designed to evoke a P3 component for correct response inhibitions and an error-related negativity (ERN) for incorrect commission errors - while speed of walking was experimentally manipulated. Robust P3 and ERN components were obtained under all experimental conditions - while participants were stationary, walking at moderate speed (2.4 km/hour), or walking rapidly (5km/hour). Signal-to-noise ratios were remarkably similar across conditions, pointing to the feasibility of high-fidelity ERP recordings under relatively vigorous activity regimens. In the second study, high-density electroencephalographic recordings were deployed to investigate the neural processes associated with vestibular detection of changes in heading. Participants were translated linearly 7.8 cm on a motion platform using a one second motion profile, at a 45 angle leftward or rightward of straight ahead. These headings were presented with a stimulus probability of 80-20 . Participants responded when they detected the infrequent direction change via button-press. Statistical parametric mapping showed that ERP to standard and target movements differed significantly from 490 to 950 ms post-stimulus. Topographic analysis showed that this difference had a typical P3 topography. These studies provide highly promising methods for gaining insight into the neurophysiological correlates of self-motion in more naturalistic environmental settings.


 Dates: 2012-10
 Publication Status: Published in print
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 Identifiers: BibTex Citekey: ButlerDNWBRF2012
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Title: 42nd Annual Meeting of the Society for Neuroscience (Neuroscience 2012)
Place of Event: New Orleans, LA, USA
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Title: 42nd Annual Meeting of the Society for Neuroscience (Neuroscience 2012)
Source Genre: Proceedings
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Pages: - Volume / Issue: - Sequence Number: 828.06 Start / End Page: - Identifier: -