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Experimental Brain Research

, Volume 127, Issue 4, pp 355–370 | Cite as

Motion-responsive regions of the human brain

  • Stefan Sunaert
  • Paul Van Hecke
  • G. Marchal
  • G. A. Orban
Research Article

Abstract 

Functional magnetic resonance imaging was used to map motion responsive regions of the human brain by contrasting passive viewing of moving and stationary randomly textured patterns. Regions were retained as motion responsive if they reached significance either in the group analysis or in the majority of hemispheres in single-subject analysis. They include well-known regions, such as V1, hMT/V5+, and hV3A, but also several occipito-temporal, occipito-parietal, parietal, and frontal regions. The time course of the activation was similar in most of these regions. Motion responses were nearly identical for binocular and monocular presentations. Flicker-induced-activation introduced a dichotomy amongst these motion responsive regions. Early occipital and occipito-temporal regions responded well to flicker, while flicker responses gradually vanished as one moved to occipito-parietal and then parietal regions. Finally, over a more than four-fold range, stimulus diameter had little effect on the motion activations, except in V1.

Key words Visual cortex Motion Functional imaging Human Flicker 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • Stefan Sunaert
    • 1
  • Paul Van Hecke
    • 1
  • G. Marchal
    • 1
  • G. A. Orban
    • 2
  1. 1.Afdeling Radiologie, UZ Gasthuisberg, B-3000 Leuven, BelgiumBE
  2. 2.Laboratorium voor Neuro- en Psychofysiologie, KU Leuven, Medical School, Campus Gasthuisberg, B-3000 Leuven, Belgium e-mail: guy.Orban@med.kuleuven.ac.be Tel.: +32-16-345744, Fax: +32-16-345993BE

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