dc.contributor.author |
Ruzzoli, Manuela |
dc.contributor.author |
Soto-Faraco, Salvador, 1970- |
dc.date |
2014 |
dc.identifier.citation |
Ruzzoli M, Soto-Faraco S. Alpha stimulation of the human parietal cortex attunes tactile perception to external space. Curr. Biol. 2014;24(3):329-32. DOI: 10.1016/j.cub.2013.12.029 |
dc.identifier.citation |
0960-9822 |
dc.identifier.citation |
http://dx.doi.org/10.1016/j.cub.2013.12.029 |
dc.identifier.uri |
http://hdl.handle.net/10230/34589 |
dc.format |
application/pdf |
dc.language.iso |
eng |
dc.publisher |
Elsevier |
dc.relation |
Current Biology. 2014;24(3):329-32. |
dc.relation |
info:eu-repo/grantAgreement/EC/FP7/263145 |
dc.relation |
info:eu-repo/grantAgreement/ES/3PN/PSI2010-15426 |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.rights |
© Elsevier http://dx.doi.org/10.1016/j.cub.2013.12.029 |
dc.subject |
Human perception |
dc.subject |
Touch |
dc.subject |
Tactile remapping |
dc.subject |
Alpha rhythm |
dc.subject |
Intra-Parietal Sulcus (IPS) |
dc.subject |
Transcranial magnetic stimulation (TMS) |
dc.subject |
Entrainment |
dc.title |
Alpha stimulation of the human parietal cortex attunes tactile perception to external space |
dc.type |
info:eu-repo/semantics/article |
dc.type |
info:eu-repo/semantics/acceptedVersion |
dc.description.abstract |
An intriguing question in neuroscience concerns how somatosensory events on the skin are represented in the human brain. Since Head and Holmes’ [1] neuropsychological dissociation between localizing touch on the skin and localizing body parts in external space, touch is considered to operate in a variety of spatial reference frames [2]. At least two representations of space are in competition during orienting to touch: a somatotopic one, reflecting the organization of the somatosensory cortex (S1) [3], and a more abstract, external reference frame that factors postural changes in relation to body parts and/or external space [4, 5]. Previous transcranial magnetic stimulation (TMS) studies suggest that the posterior parietal cortex (PPC) plays a key role in supporting representations as well as orienting attention in an external reference frame [4, 6]. Here, we capitalized on the TMS entrainment approach [7, 8], targeting the intraparietal sulcus (IPS). We found that frequency-specific (10 Hz) tuning of the PPC induced spatially specific enhancement of tactile detection that was expressed in an external reference frame. This finding establishes a tight causal link between a concrete form of brain activity (10 Hz oscillation) and a specific type of spatial representation, revealing a fundamental property of how the parietal cortex encodes information. |
dc.description.abstract |
This work was supported by grants from the European Research Council (StG-2010 263145), the Spanish Ministry of Science and Innovation (PSI2010-15426), and the Comissionat per a Universitats i Recerca del DIUE-Generalitat de Catalunya (SRG2009-092) to S.S.-F. |