Exploratory data analysis reveals visuovisual interhemispheric transfer in functional magnetic resonance imaging

Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine
Ryan C N D'ArcyGerhard Stroink

Abstract

We used an exploratory data analysis approach to detect interhemispheric processing of complex visual stimuli in functional magnetic resonance imaging (fMRI). A crossed-uncrossed visual field paradigm was used to elicit interhemispheric transfer of picture/word information. Under the uncrossed (control) condition, the stimuli were presented to the preferential hemispheres (pictures to the left visual field/right hemisphere and words to the right visual field/left hemisphere). Under the crossed condition, the visual field presentation was switched in order to elicit increased interhemispheric processing. Fuzzy cluster analysis revealed significantly more crossed activity in cortical areas near the splenium of the corpus callosum. As expected, examination of the activation revealed smaller responses in perisplenial regions (relative to visual responses in the medial extrastriate regions). The exploratory results were compared with those obtained from parametric and masked analyses. The findings confirm that fMRI can be used to detect interhemispheric transfer of picture/word information. The activation was optimally characterized using exploratory data analysis.

References

Jun 1, 1965·Brain : a Journal of Neurology·M S GazzanigaR W Sperry
Nov 13, 1998·NeuroImage·G K AguirreM D'esposito
Aug 7, 2002·Journal of Neurophysiology·M TettamantiC A Marzi
Sep 26, 2003·Experimental Brain Research·Stefan PollmannD Yves von Cramon
Feb 20, 2004·Magnetic Resonance Imaging·Peter Zhilkin, Murray E Alexander
Jul 3, 2004·Journal of Computer Assisted Tomography·Osamu AbeKuni Ohtomo
Feb 11, 2005·Journal of Cognitive Neuroscience·B WeberC A Marzi

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Citations

Jun 9, 2009·European Radiology·Sven Haller, Andreas J Bartsch
Jun 16, 2011·BMC Neuroscience·Jodie R GawrylukRyan C N D'Arcy
Mar 12, 2013·Neural Plasticity·Mara Fabri, Gabriele Polonara
Jun 30, 2012·Journal of Neuroscience Methods·Sean R McWhinneyRyan C N D'Arcy
Jun 20, 2014·Brain and Behavior·Paolo BarbaresiEmanuela Mensà
Oct 15, 2014·The Journal of Comparative Neurology·Paolo BarbaresiSanto Gratteri
Nov 18, 2010·Brain Research·Mara FabriTullio Manzoni
Aug 20, 2014·Frontiers in Human Neuroscience·Jodie R GawrylukRyan C N D'Arcy
Jul 22, 2017·Magnetic Resonance Imaging·Lichi ZhangDinggang Shen
May 28, 2016·Sensors·Stephan LauJens Haueisen
Jan 1, 2015·World Journal of Radiology·Mara FabriGabriele Polonara
Dec 29, 2017·Proceedings of the National Academy of Sciences of the United States of America·Zhaohua DingJohn C Gore
Jul 6, 2019·Human Brain Mapping·Jiao LiWei Liao
Mar 14, 2013·PloS One·Erin L MazerolleRyan C N D'Arcy
Oct 3, 2018·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Kurt G SchillingJohn C Gore
Oct 23, 2019·Frontiers in Neuroscience·Lukas A GrajauskasRyan C N D'Arcy
Nov 24, 2021·Brain Structure & Function·Tory O FrizzellRyan C N D'Arcy

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