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| Home > Publications Database > Physiological changes through sensory augmentation in path integration: an fMRI study > print |
| 001 | 145624 | ||
| 005 | 20200925192541.0 | ||
| 037 | _ | _ | |a DZNE-2020-00954 |
| 041 | _ | _ | |a English |
| 082 | _ | _ | |a 150 |
| 100 | 1 | _ | |a Wolbers, Thomas |0 P:(DE-2719)2810583 |b 0 |u dzne |
| 111 | 2 | _ | |a 12th Biannual Conference of the German Cognitive Science Society (Gesellschaft für Kognitionswissenschaft) |c Tübingen |d 2014-09-29 - 2014-10-02 |w Germany |
| 245 | _ | _ | |a Physiological changes through sensory augmentation in path integration: an fMRI study |
| 260 | _ | _ | |c 2014 |
| 336 | 7 | _ | |a Abstract |b abstract |m abstract |0 PUB:(DE-HGF)1 |s 1597400774_15937 |2 PUB:(DE-HGF) |
| 336 | 7 | _ | |a Conference Paper |0 33 |2 EndNote |
| 336 | 7 | _ | |a INPROCEEDINGS |2 BibTeX |
| 336 | 7 | _ | |a conferenceObject |2 DRIVER |
| 336 | 7 | _ | |a Journal Article |0 PUB:(DE-HGF)16 |2 PUB:(DE-HGF) |m journal |
| 336 | 7 | _ | |a Output Types/Conference Abstract |2 DataCite |
| 336 | 7 | _ | |a OTHER |2 ORCID |
| 520 | _ | _ | |a The theory of sensorimotor contingencies (SMCs) describes qualita-tive experience as based on the dependency between sensory inputand its preceding motor actions. To investigate sensory processingand learning of new SMCs we used sensory augmentation in a virtualpath integration task. Specifically, we built a belt that maps direc-tional information of a compass to a set of vibrating elements such asthat the element pointing north is always activated. The belt changesits tactile signals only by motor actions of the belt-wearing partici-pants, i.e. when turning around.Nine subjects wore the belt during all waking hours for sevenweeks, 5 control subjects actively trained their navigation, but withouta belt (age 19–32y, seven female). Before and after the training periodwe presented in the fMRI scanner a virtual path integration (PI) taskand a corresponding control task with identical visual stimuli. In halfof the trials of both tasks the belt was switched on, coherentlyvibrating with the virtual movements of the subjects.We used ROI analysis to concentrate on regions relevant forspatial navigation and for sensory processing. We used a mixed-effects ANOVA to decompose the four factors belt on/off, belt/control subjects, PI/control task, and before/after training. Themain effect PI[control task shows large-scale differences in areasthat have been found to be active in similar navigational taskssuch as medial superior temporal cortices (MST), posterior parietalcortex (PPC), ventral intraparietal areas, and caudate nucleus.Additionally we found sensorimotor regions such as supplementarymotor areas (SMA), insula, primary sensory cortex, and precentralgyrus. The main effect belt on[off reveals processing of the tactile signals in expected sensory areas such as the primarysensory cortex, supramarginal gyri, and Rolandic opercula. Insecond-level analyses significant 2-way interactions between thebelt on/off and pre/post training condition indicates an involvementof Rolandic opercula, Insula, MST and PPC. Inspection of theactivation intensities shows a significant difference belt on[offonly in the first measurement before the training period, but notafter the training period.In summary, in fMRI we observe differential activations in areasexpected for path integration tasks and tactile stimulation. Additionally,we also found activation differences for the belt signals well beyond the somatosensory system, indicating that processing is not limited to sen-sory areas but includes also higher level and motor regions as predicted bythe theory of sensorimotor contingencies. It is demonstrated that thebelt’s signal is processed differently after the training period. Our fMRIresults are also in line with subjective reports indicating a qualitativechange in the perception of the belt signals. |
| 536 | _ | _ | |a 344 - Clinical and Health Care Research (POF3-344) |0 G:(DE-HGF)POF3-344 |c POF3-344 |f POF III |x 0 |
| 773 | _ | _ | |0 PERI:(DE-600)2075054-7 |n 1 |p S73 |t Cognitive processing |v 15 |y 2014 |x 1612-4782 |
| 856 | 4 | _ | |u https://link.springer.com/content/pdf/10.1007/s10339-014-0632-2.pdf |
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| 910 | 1 | _ | |a Deutsches Zentrum für Neurodegenerative Erkrankungen |0 I:(DE-588)1065079516 |k DZNE |b 0 |6 P:(DE-2719)2810583 |
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| 914 | 1 | _ | |y 2014 |
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| 980 | _ | _ | |a abstract |
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