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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Goossens, Jeroen Van Den Berg, Albert V. Arnoldussen, David Mattijs |
| Description | Author Affiliation: Arnoldussen DM ( Department of Cognitive Neuroscience, Section of Biophysics, Donders Institute for Brain, Cognition, and Behaviour, Radboud University Nijmegen Medical Centre, 6525 EZ, Nijmegen, The Netherlands.); |
| Abstract | Recent investigations indicate that retinal motion is not directly available for perception when moving around [Souman JL, et al. (2010) J Vis 10:14], possibly pointing to suppression of retinal speed sensitivity in motion areas. Here, we investigated the distribution of retinocentric and head-centric representations of self-rotation in human lower-tier visual motion areas. Functional MRI responses were measured to a set of visual self-motion stimuli with different levels of simulated gaze and simulated head rotation. A parametric generalized linear model analysis of the blood oxygen level-dependent responses revealed subregions of accessory V3 area, V6(+) area, middle temporal area, and medial superior temporal area that were specifically modulated by the speed of the rotational flow relative to the eye and head. Pursuit signals, which link the two reference frames, were also identified in these areas. To our knowledge, these results are the first demonstration of multiple visual representations of self-motion in these areas. The existence of such adjacent representations points to early transformations of the reference frame for visual self-motion signals and a topography by visual reference frame in lower-order motion-sensitive areas. This suggests that visual decisions for action and perception may take into account retinal and head-centric motion signals according to task requirements. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 28 |
| Volume Number | 108 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2011-07-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Motion Perception Physiology Visual Perception Eye Movements Head Movements Linear Models Magnetic Resonance Imaging Models, Neurological Parietal Lobe Photic Stimulation Retina Temporal Lobe Vision, Ocular Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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