Time-resolved searchlight analysis of imagined visual motion using 7T ultra-high field fMRI: Data on interindividual differences.

Thomas C Emmerling,Bettina Sorger,Jan Zimmermann,Rainer Goebel,Martin Frost

doi:10.1016/j.dib.2016.02.071

Thomas C Emmerling, Bettina Sorger + Show 3 more

Open Access

https://doi.org/10.1016/j.dib.2016.02.071

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Abstract

Interindividual differences play a crucial role in research on mental imagery. The inherently private nature of imagery does not allow for the same experimental control that is possible in perception research. Even when there are precise instructions subjects will differ in their particular imagery strategy and, hence, show different brain activations. Here, we show results of a time-resolved searchlight analysis for 12 individual subjects who perform a visual motion imagery task. The data show the spatial and temporal extent of brain areas and time windows that allow for a successful decoding of the direction of imagined motion out of four options. Accuracy maps for six different time windows are shown for every individual subject and are made freely available on NeuroVault. These data accompany the findings in the publication “Decoding the direction of imagined visual motion using 7 T ultra-high field fMRI” (Emmerling et al., 2016) [1].

Highlights

Interindividual differences play a crucial role in research on mental imagery
The inherently private nature of imagery does not allow for the same experimental control that is possible in perception research
The data show the spatial and temporal extent of brain areas and time windows that allow for a successful decoding of the direction of imagined motion out of four options

Summary

Data accessibility Data is within this article

Time-resolved significance maps show spatial and temporal differences between 12 subjects. Additional behavioral data from the original publication provide information about individual strategies and performance in widely used imagery questionnaires. Maps are available on NeuroVault.org making comparisons with other studies easier. We show data of a time-resolved searchlight analysis for 12 individual subjects performing a visual motion imagery task. In each searchlight sphere a multi-voxel pattern analysis (MVPA) is performed to decode four different directions of imagined motion. This is done for six different but overlapping time windows with respect to the onset of an imagery trial. The resulting volumetric maps show pvalues for FDR-corrected Chi-square tests of the confusion matrices of each searchlight sphere.

Subjects

Procedure

Additional behavioral data

Searchlight analysis

MNI space transformation