Ordinal depth information from accommodation?

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<title>Ordinal depth information from accommodation?</title>
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<namePart>Mon-Williams, Mark</namePart>
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<namePart>Tresilian, James R.</namePart>
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<abstract>The abiblity to judge egocentric distance was assessed in two groups of six observers using a manual pointing task. The purpose of the study was to determine the extent to which blur-driven accommodation can provide information on target distance in the absence of any retinal cues to distance. It is concluded that accommodation can act as a source of ordinal distance information in the absence of other cues to distance but the contribution of accommodation to normal distance percepcion in full-cue conditions is questioned.</abstract>
<note type="statement of responsibility">Mark Mon-Williams and James R. Tresilian</note>
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<text>Vol. 43 nº 3, March 2000 ; p. 391-404</text>
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