000154858 001__ 154858
000154858 005__ 20190316234933.0
000154858 0247_ $$2doi$$a10.1007/s00221-007-1095-9
000154858 022__ $$a0014-4819
000154858 02470 $$2ISI$$a000250997900007
000154858 037__ $$aARTICLE
000154858 245__ $$aInfluence of galvanic vestibular stimulation on egocentric and object-based mental transformations
000154858 269__ $$a2008
000154858 260__ $$bSpringer Verlag$$c2008
000154858 336__ $$aJournal Articles
000154858 520__ $$aThe vestibular system analyses angular and linear accelerations of the head that are important information for perceiving the location of one's own body in space. Vestibular stimulation and in particular galvanic vestibular stimulation (GVS) that allow a systematic modification of vestibular signals has so far mainly been used to investigate vestibular influence on sensori-motor integration in eye movements and postural control. Comparatively, only a few behavioural and imaging studies have investigated how cognition of space and body may depend on vestibular processing. This study was designed to differentiate the influence of left versus right anodal GVS compared to sham stimulation on object-based versus egocentric mental transformations. While GVS was applied, subjects made left-right judgments about pictures of a plant or a human body presented at different orientations in the roll plane. All subjects reported illusory sensations of body self-motion and/or visual field motion during GVS. Response times in the mental transformation task were increased during right but not left anodal GVS for the more difficult stimuli and the larger angles of rotation. Post-hoc analyses suggested that the interfering effect of right anodal GVS was only present in subjects who reported having imagined turning themselves to solve the mental transformation task (egocentric transformation) as compared to those subjects having imagined turning the picture in space (object-based mental transformation). We suggest that this effect relies on shared functional and cortical mechanisms in the posterior parietal cortex associated with both right anodal GVS and mental imagery.
000154858 700__ $$aLenggenhager, Bigna
000154858 700__ $$aLopez, Christophe
000154858 700__ $$0240593$$g165806$$aBlanke, Olaf
000154858 773__ $$j184$$tExperimental brain research$$k2$$q211-21
000154858 8564_ $$uhttps://infoscience.epfl.ch/record/154858/files/2008_Lenggenhager_EBR_influence%20of%20galvanic%20vestibular%20stimulation%20on%20egocentric%20and%20object-based%20mental%20transformations.pdf$$zn/a$$s426165$$yPublisher's version
000154858 909C0 $$xU11025$$0252325$$pLNCO
000154858 909CO $$ooai:infoscience.tind.io:154858$$qGLOBAL_SET$$pSV$$particle
000154858 917Z8 $$x182396
000154858 917Z8 $$x198754
000154858 937__ $$aEPFL-ARTICLE-154858
000154858 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000154858 980__ $$aARTICLE