PowerPoint Presentation
Sustained Attention Changes Local Correlations in Brain
Activity"Joo V. Dornas, Stepan Aleshin (PhD), Alexander Pastukhov
(PhD), Jochen Braun (PhD)Speaker: Joo V. Dornas, PhD
candidateGroup: Prof. Jochen Braun - Cognitive Biology Group,
Institute of BiologyINTRODUCTIONMETHODS (Experimental)METHODS
(Mathematics)RESULTS
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PRESENTATION: NAMEORIGINBACKGROUNDTEAMLAB/INSTITUTEBRIEF
OVERVIEW OF PROJECT (fMRI, Attention)1
INTRODUCTIONMETHODS (Experimental)METHODS
(Mathematics)RESULTS
RESTING STATEPASSIVE VIEWINGTRACKINGTRIALS5.5 minutes run, per
condition: (8 subjects x 4 runs) 10 trials interleavedEXPERIMENTAL
PARADIGM2(8 subjects x 4 runs) 30 s30 sTRACKINGPASSIVE
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INTRODUCTIONMETHODS (Experimental)METHODS
(Mathematics)RESULTS
AAL ParcellationZ = +1890 Regions of Interest (ROIS)Credits:N.
Tzourio-Mazoyer, B. Landeau, D. Papathanassiou, F. Crivello, O.
Etard, N. Delcroix, B. Mazoyer, and M. Joliot. NeuroImage 2002. 15
:273-289ANATOMICAL PARCELLATIONColin27 (MNI152 space)3
1. AAL PARCELLATION AS CREATED USING COLIN27 BRAIN AS A
REFERENCE.2. COLIN27 WAS BUILD USING AS REFERENE THE MNI105
TEMPLATE BUT IS AN IMAGE GENERATED FROM ONLY ONE BRAIN, SCANNED 27
TIMES.3. AAL PROCEDURE LABELED MANUALLY EACH ROI FOR EACH
HEMISPHERE IN A 3D IMAGE, AND SAMPLED THE FINAL VOLUME ON MNI152
SPACE.
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INTRODUCTIONMETHODS (Experimental)METHODS
(Mathematics)RESULTS
4FUNCTIONAL PARCELLATION
1. SANITY CHECK FOR FUNCTIONAL PARCELLATION.4
INTRODUCTIONMETHODS (Experimental)METHODS
(Mathematics)RESULTS
5T-CONTRAST PARCELLATION
-4.5-1.6
4.51.6z-score
BOLDHRF
Attentive TrackingResting State
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INTRODUCTIONMETHODS (Experimental)METHODS
(Mathematics)RESULTS
Local Functional Connectivity Density (lFCD): positive,
negative6
AAL Parcellation
For each 90 ROIsnVoxels
FC Voxel Level(example ROI)nVoxels11ith
Negative lFCDPositive lFCDCorrelation Significance(p0P-R0A-P
