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The Journal of Neuroscience, July 25, 2007, 27(30):8002-8010; doi:10.1523/JNEUROSCI.2130-07.2007

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Behavioral/Systems/Cognitive
Neural Systems in the Visual Control of Steering

David T. Field,1 Richard M. Wilkie,2 and John P. Wann3

1Department of Psychology, University of Reading, Reading RG6 6AH, United Kingdom, 2Department of Psychology, University of Leeds, Leeds LS2 9JT, United Kingdom, and 3Department of Psychology, Royal Holloway, University of London, Egham TW20 0EX, United Kingdom

Correspondence should be addressed to David Field, Department of Psychology, University of Reading, Reading RG6 6AL, UK. Email: d.t.field{at}reading.ac.uk

Visual control of locomotion is essential for most mammals and requires coordination between perceptual processes and action systems. Previous research on the neural systems engaged by self-motion has focused on heading perception, which is only one perceptual subcomponent. For effective steering, it is necessary to perceive an appropriate future path and then bring about the required change to heading. Using function magnetic resonance imaging in humans, we reveal a role for the parietal eye fields (PEFs) in directing spatially selective processes relating to future path information. A parietal area close to PEFs appears to be specialized for processing the future path information itself. Furthermore, a separate parietal area responds to visual position error signals, which occur when steering adjustments are imprecise. A network of three areas, the cerebellum, the supplementary eye fields, and dorsal premotor cortex, was found to be involved in generating appropriate motor responses for steering adjustments. This may reflect the demands of integrating visual inputs with the output response for the control device.

Key words: LIP; parietal eye fields; cerebellum; SEF; heading; optic flow; internal model

Received Jan. 24, 2007; revised June 18, 2007; accepted June 18, 2007.

Correspondence should be addressed to David Field, Department of Psychology, University of Reading, Reading RG6 6AL, UK. Email: d.t.field{at}reading.ac.uk






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