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  Combining backward masking and transcranial magnetic stimulation in human observers

Kammer, T., Scharnowski, F., & Herzog, M. (2003). Combining backward masking and transcranial magnetic stimulation in human observers. Neuroscience Letters, 343(3), 171-174.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-DC3D-B Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-DC3E-9
Genre: Journal Article

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 Creators:
Kammer, T1, 2, Author              
Scharnowski, F3, Author              
Herzog, MH, Author
Affiliations:
1Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, escidoc:1497797              
2Former Department Comparative Neurobiology, Max Planck Institute for Biological Cybernetics, Max Planck Society, escidoc:1497800              
3Max Planck Institute for Biological Cybernetics, Max Planck Society, escidoc:1497794              

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 Abstract: Both backward masking and transcranial magnetic stimulation (TMS) are capable of hindering perception of a visual target. To study the relationship between these two methods we applied TMS over the occipital pole in combination with the recently discovered weak visual backward masking technique shine-through. In three subjects we determined discrimination thresholds for vernier acuity by means of a 2AFC task. The time course of target processing was investigated by varying the stimulus onset asynchrony (SOA) of TMS for an unmasked vernier target. Vernier offset discrimination deteriorates moderately around 120 ms TMS SOA. If in addition to TMS the vernier is backward-masked, discrimination of the vernier offset is completely abolished. Therefore, TMS and backward masking can interact in a non-linear manner, strongly interfering with early visual processing.

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 Dates: 2003-06
 Publication Status: Published in print
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 Identifiers: BibTex Citekey: 2017
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Title: Neuroscience Letters
Source Genre: Journal
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Pages: - Volume / Issue: 343 (3) Sequence Number: - Start / End Page: 171 - 174 Identifier: -