Cite as:
Ohmi M, Howard I P, Landolt J P, 1987, "Circular vection as a function of foreground-background relationships" Perception 16(1) 17 – 22
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Circular vection as a function of foreground-background relationships

Masao Ohmi, Ian P Howard, Jack P Landolt

Received 5 November 1986, in revised form 2 April 1987

Abstract. It has previously been reported that illusory self-rotation (circular vection) is most effectively induced by the more distant of two moving displays. Experiments are reported in which the relative effectiveness of two superimposed displays in generating circular vection as a function of (i) the separation in depth between them, (ii) their perceived relative distances, and (iii) which display was in the plane of focus was investigated. Circular vection was governed by the motion of the display that was perceived to be the more distant, even when it was actually nearer. However, actual or perceived distance was found to be not the crucial factor in circular vection because even when the distance between the two displays was virtually zero, vection was controlled by the display perceived to be in the background. When the displays were well separated in depth, vection was not affected by whether the near or the tar display was in the plane of focus, nor by which display was fixed or pursued by the eyes.

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