Show simple item record

dc.contributor.advisor Dannemiller, James L.
dc.creatorJohnson, Ruth M.
dc.date.accessioned 2009-06-03T19:51:13Z
dc.date.available 2009-06-03T19:51:13Z
dc.date.issued 2008
dc.identifier.urihttps://hdl.handle.net/1911/22167
dc.description.abstract Most research studies on crossmodal processing of visual and tactile modalities have found that vision enhances touch. Nevertheless, it is unclear whether vision increases tactile sensitivity or changes participants' response criteria for reporting touch. The following set of studies demonstrated that some experimental manipulations can lead to a small increase in tactile sensitivity; however, all experiments showed a consistently strong response bias to report feeling a touch with a concomitant visual stimulus. Further experiments sequenced the temporal processes associated with the visuotactile response bias and determined that greater visual influences on electrotactile processing occurred at smaller crossmodal asynchronies. A final experiment demonstrated that the reported electrotactile enhancement bias on light-present trials can be increased with transcranial magnetic stimulation (TMS) over the posterior parietal cortex 200 ms after visual and electrotactile stimuli presentation. Further research needs to be conducted to determine more precise cortical locations and temporal sequences of the crossmodal interactions between vision and touch.
dc.format.extent 80 p.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subjectCognitive psychology
dc.title Visual influences on electrotactile processing: Localizing and sequencing crossmodal interactions
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Psychology
thesis.degree.discipline Social Sciences
thesis.degree.grantor Rice University
thesis.degree.level Doctoral
thesis.degree.name Doctor of Philosophy
dc.identifier.citation Johnson, Ruth M.. "Visual influences on electrotactile processing: Localizing and sequencing crossmodal interactions." (2008) Diss., Rice University. https://hdl.handle.net/1911/22167.


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record