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Mitsumatsu H, Yokosawa K, 2003, "Efficient extrapolation of the view with a dynamic and predictive stimulus" Perception 32(8) 969 – 983
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Efficient extrapolation of the view with a dynamic and predictive stimulus

Hidemichi Mitsumatsu, Kazuhiko Yokosawa

Received 15 January 2002, in revised form 26 February 2003; published online 18 August 2003

Abstract. In the real-world, the retinal projection of an object changes as we move, or as a moving object passes in front of us. We have to recognise objects, despite such retinal-projection changes. Many studies have shown that the time required to identify objects after a change in the retinal projection is longer than when there is no retinal-projection change. This recognition cost is referred to as the view-dependent effect. Previous researchers have studied the view-dependent effect while disregarding the predictability of retinal-projection changes. Here, we demonstrate that there is no view-dependent effect when the predictability is introduced, in the case where participants track moving objects by head-turning or eye-movement in a virtual environment. Violation of the predictability, such as an unpredictable retinal-projection change or a movement of the first stimulus that was inconsistent with a subsequent retinal-projection change, caused a view-dependent effect. Moreover, we found that extraretinal information such as head-turning or eye-movement was unnecessary for view-independent recognition. These results indicate that humans can extrapolate to the tested view from the studied view in a view-independent way when retinal-projection change is predictable from the visual stimulus.

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